CN115133945B - Signal processing device and method - Google Patents
Signal processing device and method Download PDFInfo
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- CN115133945B CN115133945B CN202210511521.8A CN202210511521A CN115133945B CN 115133945 B CN115133945 B CN 115133945B CN 202210511521 A CN202210511521 A CN 202210511521A CN 115133945 B CN115133945 B CN 115133945B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/48—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for in-vehicle communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
- H04W52/0287—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level changing the clock frequency of a controller in the equipment
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Abstract
The application discloses a signal processing device and a signal processing method. The device comprises: the antenna module comprises a second mixer and an antenna port; the control module is connected with the first mixer; the second mixer is connected with the antenna port; the first mixer is connected with the second mixer; the control module is used for sending a first high-frequency signal to the first mixer; the first mixer is used for generating a first local oscillator signal, mixing the first high-frequency signal with the first local oscillator signal to obtain a low-frequency signal, and sending the low-frequency signal to the second mixer; the second mixer is used for generating a second local oscillation signal, mixing the low-frequency signal with the second local oscillation signal to obtain a second high-frequency signal, and sending the second high-frequency signal to the antenna port; and an antenna port for outputting a second high frequency signal. By adopting the signal processing device, the power loss can be reduced.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a signal processing apparatus and a signal processing method.
Background
With the development of the fifth generation mobile communication technology (5th Generation Mobile Communication Technology,5G), more and more in-vehicle products employ 5G technology. For example, an On Board Unit (OBU) box in a vehicle networking (vehicle to everything, V2X) system can better implement collision early warning or automatic driving through the high reliability low delay characteristic of the 5G technology. However, since the 5G operating band is as high as 5.9G Hz, the OBU box needs to transmit high frequency output signals to the antenna during communication in this band, which causes significant power loss during the transmission.
Therefore, how to reduce the power loss becomes a hot spot problem in the current research.
Disclosure of Invention
The embodiment of the invention provides a signal processing device and a signal processing method, which can reduce power loss.
In a first aspect, the present application provides a signal processing apparatus comprising: the antenna module comprises a second mixer and an antenna port; the control module is connected with the first mixer; the second mixer is connected with the antenna port; the first mixer is connected with the second mixer; the control module is used for sending a first high-frequency signal to the first mixer; the first mixer is used for generating a first local oscillation signal, mixing a first high-frequency signal with the first local oscillation signal to obtain a low-frequency signal, and sending the low-frequency signal to the second mixer; the second mixer is used for generating a second local oscillation signal, mixing the low-frequency signal with the second local oscillation signal to obtain a second high-frequency signal, and sending the second high-frequency signal to the antenna port; the antenna port is used for outputting a second high-frequency signal.
Therefore, the first high-frequency signal and the first local oscillation signal are mixed to obtain a low-frequency signal, and the low-frequency signal is transmitted to the antenna module, so that the power loss is reduced in the process of being transmitted from the processing module to the antenna module; by mixing the low frequency signal with the second local oscillation signal to obtain the second high frequency signal, the second high frequency signal output from the antenna port can be kept as high as possible.
In one implementation, the antenna module further includes a first switch including a first switch port and a second switch port, the second mixer is connected to the first switch port, the first switch port is connected to the antenna port; the second mixer is connected with a second switch port, the second switch port is connected with the control module, and the control module is connected with the second mixer; the second mixer is used for sending a second high-frequency signal to the antenna port, and is specifically used for sending the second high-frequency signal to the antenna port through the first switch port; the second mixer is further configured to send a second high-frequency signal to the control module through a second switch port; the control module is further used for measuring the power of the second high-frequency signal to obtain an adjustment signal, sending the adjustment signal to the first mixer and sending adjustment information to the second mixer; the first mixer is further configured to adjust an amplitude of a first local oscillation signal according to the adjustment signal; the second mixer is further configured to adjust an amplitude of a second local oscillation signal according to the adjustment signal.
Therefore, the second high-frequency signal is sent to the control module, so that the control module can measure the power of the second high-frequency signal, the adjusting signal is determined, the adjusting signal is sent to the first mixer and the second mixer respectively, the first mixer is further used for adjusting the amplitude of the first local oscillator signal, and the second mixer is used for adjusting the amplitude of the second local oscillator signal, so that the next mixing result is more ideal.
In one implementation, the control module includes a high frequency signal output port and an adjustment signal output port; the high-frequency signal output port is used for sending a first high-frequency signal to the first mixer; the adjusting signal output port is used for sending the adjusting signal to the first mixer and sending the adjusting signal to the second mixer.
In one implementation, the antenna module further includes a second switch including a third switch port and a fourth switch Guan Duankou, the antenna port connected to the third switch port, the third switch port connected to the second mixer; the antenna port is connected with a fourth switch Guan Duankou, and the fourth switch port is connected with the control module; the second mixer is used for sending the second high-frequency signal to the antenna port, and is specifically used for sending the second high-frequency signal to the antenna port through the third switch port; the antenna port is further configured to receive the first input signal, and send the first input signal to the control module through the fourth switch port.
Therefore, by adopting the second switch, the data transmitted by the antenna port can be divided into an output path and an input path, and different processing is carried out by two different paths respectively, so that the signal processing device can obtain better input signals and output signals.
In one implementation, the antenna module further includes a third switch, a fourth switch, and a low noise amplifier, the third switch including a fifth switch port and a sixth switch Guan Duankou, the fourth switch including a seventh switch Guan Duankou and an eighth switch Guan Duankou; the fourth switch port is connected with a fifth switch Guan Duankou, the fifth switch port is connected with a seventh switch Guan Duankou, and the seventh switch port is connected with a control module; the fourth switch port is connected with a sixth switch Guan Duankou, the sixth switch port is connected with the input port of the low-noise amplifier, the output port of the low-noise amplifier is connected with an eighth switch Guan Duankou, and the eighth switch port is connected with the control module; an antenna port, specifically configured to send a first input signal to the fifth switch port through the fourth switch Guan Duankou; a fifth switch port for transmitting a first input signal to the seventh switch Guan Duankou; a seventh switch Guan Duankou for sending a first input signal to the control module; an antenna port, specifically configured to send a first input signal to the sixth opening Guan Duankou through the fourth opening Guan Duankou; a sixth opening Guan Duankou for transmitting the first input signal to the input port of the low noise amplifier; the low noise amplifier is used for carrying out noise coefficient processing on the first input signal to obtain a second input signal, and sending the second input signal to the eighth opening Guan Duankou through an output port of the low noise amplifier; eighth opening Guan Duankou for transmitting a second input signal to the control module; the control module is configured to receive a first input signal from the seventh opening Guan Duankou, and measure a signal strength of the first input signal to obtain a first received signal strength indicator RSSI signal; receiving a second input signal from the eighth opening Guan Duankou, and measuring the signal strength of the second input signal to obtain a second RSSI signal; and compensating the second input signal according to the first RSSI signal and the second RSSI signal to obtain a third input signal.
Therefore, two transmission paths are established through the third switch and the fourth switch to transmit the first input signal, so that the control module can respectively receive the first input signal which is not processed by the low-noise amplifier and the second input signal which is processed by the low-noise amplifier, and the second input signal which is processed by the low-noise amplifier is compensated through the first RSSI of the first input signal and the second RSSI of the second input signal, and further the third input signal with more accurate signal strength is obtained.
In one implementation, the control module further includes an input port for receiving a third input signal.
In one implementation, the processing module further includes a low frequency power amplifier, an output port of the first mixer is connected to a first input port of the low frequency power amplifier, and an output port of the low frequency power amplifier is connected to an input port of the second mixer; the control module is connected with a second input port of the low-frequency power amplifier; the first mixer is specifically configured to mix the first high-frequency signal and the first local oscillator signal to obtain a reference low-frequency signal, and send the reference low-frequency signal to a first input port of the low-frequency power amplifier; and the low-frequency power amplifier is used for amplifying the power of the reference low-frequency signal according to the adjustment signal to obtain a low-frequency signal and transmitting the low-frequency signal to the second mixer.
It can be seen that the power of the reference low frequency signal can be amplified by the low frequency power amplifier, thereby easily realizing high power output to compensate for the power loss in the transmission process.
In one implementation, the adjustment signal output port is also used to send an adjustment signal to the low frequency power amplifier.
Therefore, the low-frequency power amplifier can adjust the gain of the low-frequency power amplifier according to the adjusting signal, so that the gain of the low-frequency power amplifier is more accurate, and the power of the reference low-frequency signal can be amplified to more proper power.
In a second aspect, the present application provides a signal processing method applied to a signal processing apparatus including: the antenna module comprises a second mixer and an antenna port; the control module is connected with the first mixer and the second mixer; the second mixer is connected with the antenna port; the first mixer is connected with the second mixer; the method comprises the following steps: mixing the first high-frequency signal and the first local oscillation signal to obtain a low-frequency signal; mixing the low-frequency signal and the second local oscillation signal to obtain a second high-frequency signal; the second high frequency signal is transmitted through the antenna port.
Therefore, the low-frequency signal can be obtained and transmitted by mixing the first high-frequency signal and the first local oscillation signal, so that the power loss in the transmission process is reduced; by mixing the low-frequency signal with the second local oscillation signal, a second high-frequency signal can be obtained and output, so that the output second high-frequency signal keeps the original frequency as much as possible.
In a third aspect, the present application provides a signal processing apparatus comprising the signal processing device of the first aspect and any one of its possible implementation forms.
In a fourth aspect, the present application provides a computer readable storage medium storing one or more instructions adapted to be loaded by a processor and to perform the signal processing method of the second aspect and any one of its possible implementations.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a V2X system according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a signal processing device according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a signal processing apparatus 300 according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a signal processing apparatus 400 according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a signal processing device 500 according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a signal processing apparatus 600 according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a signal processing device 700 according to an embodiment of the present application;
fig. 8 is a flowchart of a signal processing method according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The signal processing device provided by the application can be applied to a V2X system, a microwave communication system, a satellite communication system and other long-distance communication systems. The following description will be given by taking an example in which the signal processing apparatus is applied to a V2X system.
Referring to fig. 1, fig. 1 is a schematic diagram of a V2X system according to an embodiment of the present application. In the field of vehicle communication, V2X technology is dedicated to realizing low-latency high-reliability communication between high-speed devices, between high-speed devices and low-speed devices, or between high-speed devices and stationary devices. Where X may represent a vehicle, a pedestrian, an asset, or a network, etc., i.e., V2X may include a vehicle-to-vehicle (V2V) communication, a vehicle-to-infrastructure (V2I) communication, a vehicle-to-pedestrian (V2P) communication, or a vehicle-to-network (V2N) communication, etc.
In V2V communication, any vehicle may include a signal processing device. The signal processing device may be a vehicle-mounted device, a desktop computer, a server, a device in a self-driving (self-driving), or the like. Alternatively, the signal processing device may be a tablet computer (Pad), a mobile internet device (mobile internet device, MID), a notebook computer, a palm computer, or the like, which is not limited in the form of the signal processing device.
In V2P communication, a signal processing device on a vehicle may communicate with a pedestrian's electronic device. The electronic device of the pedestrian may be the signal processing device, or may be other devices, for example, a mobile phone, a wearable device, or a computer carried by the pedestrian, which is not limited in this application. Alternatively, the forms of the respective devices (e.g., signal processing device and electronic device) that communicate with each other may be the same or different.
In V2I communication, a signal processing device on a vehicle may communicate with an electronic device on a road facility. The electronic device located on the road facility may be a Road Side Unit (RSU), where the RSU is a facility entity supporting V2X application, and the RSU may perform information interaction with other devices supporting V2X communication.
In V2N communication, a signal processing device on a vehicle may communicate with a server. The server may be an independent physical server, a server cluster or a distributed system formed by a plurality of physical servers, or a cloud server providing cloud services, a cloud database, basic cloud computing services such as big data and an artificial intelligent platform. Optionally, the server may also be a server in a network device, so as to configure V2X resources for each signal processing device and other electronic devices in the V2X system, so that each signal processing device and other electronic devices may communicate with each other. Wherein a network device is an entity on the network side for transmitting or receiving signals. For example, the network device may be an evolved NodeB (eNB), a transmission point (transmission reception point, TRP), a next generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (wireless fidelity, wiFi) system, etc. The embodiment of the application does not limit the specific technology and the specific device form adopted by the network device.
It should also be noted that the technical solution of the embodiment of the present application may be applied to various communication systems. For example: long term evolution (long term evolution, LTE) system, fifth generation (5th generation,5G) mobile communication system, 5G New Radio (NR) system. Optionally, the method of the embodiments of the present application is also applicable to various future communication systems, such as a 6G system or other communication networks.
As shown in fig. 2, a schematic structural diagram of a signal processing apparatus is shown. The signal processing device may be a vehicle-mounted device, a microwave device, or a satellite communication device. The signal processing device may comprise, among other things, signal processing means, which may comprise a processing module and an antenna module. It will be appreciated by those skilled in the art that the structural schematic diagram shown in fig. 2 does not constitute a limitation of the signal processing apparatus, and the signal processing apparatus may include more or less components than those illustrated, or may combine certain components, or may be arranged of different components, as the present application is not limited in this regard.
Optionally, the signal processing apparatus may further include a memory to store software programs and various data, an interface unit to connect to other external devices, sensors (e.g., light sensors, motion sensors, pressure sensors, etc.), and the like. Optionally, the signal processing device may also include a power source (such as a battery) to power the various components. The power supply can be logically connected with the signal processing device through the power supply management system, so that the functions of managing charging, discharging, managing power consumption and the like are realized through the power supply management system.
In some embodiments, the "processing module," "antenna module," and "control module" are merely names employed in embodiments of the present application, which are not limiting of the embodiments of the present application. Alternatively, a "processing module" may also be referred to as a "processor" or "CPU" or "OBU box", etc.; an "antenna module" may also be referred to as a "radio frequency unit" or "radio frequency line"; the "control module" may also be referred to as a "micro control unit (microcontroller unit, MCU)", "single-chip microcomputer" or "single-chip microcomputer", etc., which is not limited in this application.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a signal processing apparatus 300 according to an embodiment of the present application, where the signal processing apparatus includes: processing module 31 and antenna module 32, processing module 31 connects antenna module 32.
In this application, the processing module 31 may be configured to generate and output a high-frequency signal, and mix the high-frequency signal to obtain a low-frequency signal, and input the low-frequency signal to the antenna module 32 through a connection line between the processing module 31 and the antenna module 32. For example, the processing module 31 may be an OBU box in a V2X system. The processing module 31 includes a control module 311 and a first mixer 312, where the control module 311 is connected to the first mixer 312. The control module 311 may be used to generate and output a high frequency signal, for example, the control module 311 may include an MCU, an application (application process, AP), a Modem (Modem), and the like. The control module 311 inputs the output high frequency signal to the first mixer 312 through a connection line between the control module 311 and the first mixer 312. The first mixer 312 may be configured to, when receiving the high frequency signal from the control module 311, perform a mixing process on the high frequency signal, for example, perform a down-conversion process on the high frequency signal to obtain a low frequency signal, and output the low frequency signal.
In one implementation, the control module 311 sends a first high frequency signal to the first mixer 312. Accordingly, the first mixer 312 may receive the first high frequency signal. The first high-frequency signal may be a high-frequency signal generated and output by the control module 311. The first high frequency signal may be a higher frequency signal, for example, the frequency of the first high frequency signal may be 5.9 ghz. Specifically, the control module 311 may generate a first high frequency signal and output the first high frequency signal from the high frequency signal output port 3111 of the control module 311.
In one implementation, the first mixer 312 generates a first local oscillator signal, mixes the first high frequency signal with the first local oscillator signal, and obtains a low frequency signal. The first local oscillator signal may be a signal with stable frequency generated by the local oscillator of the first mixer 312, and the first local oscillator signal may be used for performing mixing, frequency multiplication, frequency division, or other processing by the first mixer 312. The low frequency signal may be a low frequency output signal obtained by down-converting the first high frequency signal by the first mixer 312. The low frequency signal may be a lower frequency signal, which may be lower or much lower in frequency than the first high frequency signal; for example the frequency of the low frequency signal may be 400 mhz.
Specifically, the first input port of the first mixer 312 is connected to the high-frequency signal output port 3111 of the control module 311. When the first input port of the first mixer 312 receives the first high frequency signal from the high frequency signal output port 3111, the first high frequency signal may be mixed with the generated first local oscillation signal to obtain a low frequency signal, and the low frequency signal may be output from the output port of the first mixer 312.
In this application, the antenna module 32 may receive the low frequency signal sent by the processing module 31, and perform mixing processing on the low frequency signal to obtain a high frequency signal, so as to output the high frequency signal. The frequency of the high-frequency signal output by the antenna module 32 may be the same as or different from the frequency of the high-frequency signal generated and output by the processing module 31, which is not limited in this application. The antenna module 32 includes a second mixer 321 and an antenna port 322, and the second mixer 321 is connected to the antenna port 322. The second mixer 321 may be configured to, when receiving the low frequency signal from the first mixer 312, perform a mixing process on the low frequency signal, for example, perform an up-conversion process on the low frequency signal to obtain a high frequency signal, and output the high frequency signal. The second mixer 321 inputs the output high-frequency signal to the antenna port 322 through a connection line between the second mixer 321 and the antenna port 322. The antenna port 322 may be used to output the high frequency signal when receiving the high frequency signal from the second mixer 321.
In this application, the first mixer 312 is connected to the second mixer 321. Specifically, the output port of the first mixer 312 is connected to the first input port of the second mixer 321. The first mixer 312 inputs a low frequency signal from an output port of the first mixer 312 to a first input port of the second mixer 321 through a connection line between the first mixer 312 and the second mixer 321; accordingly, the first input port of the second mixer 321 receives the low frequency signal.
In one implementation, the second mixer 321 generates a second local oscillator signal, mixes the low frequency signal with the second local oscillator signal to obtain a second high frequency signal, and sends the second high frequency signal to the antenna port 322. The second local oscillation signal may be a signal with stable frequency generated by the local oscillator of the second mixer 321, and the second local oscillation signal may be used for performing processes such as mixing, frequency multiplication, or frequency division by the second mixer 321. It should be noted that the frequencies of the second local oscillation signal and the first local oscillation signal may be the same or different, which is not limited in this application. The second high frequency signal may be a high frequency signal after the second mixer 321 performs the frequency up processing according to the low frequency signal and the second local oscillation signal, and the second high frequency signal may be a high frequency signal output by the signal processing device. The frequency of the second high-frequency signal may be the same as the frequency of the first high-frequency signal or may be different from the frequency of the first high-frequency signal, which is not limited in this application.
Specifically, the output port of the second mixer 321 is connected to the antenna port 322. The second mixer 321 may transmit the second high frequency signal from the output port of the second mixer 321 to the antenna port 322 through a connection line between the second mixer 321 and the antenna port 322. Accordingly, the antenna port 322 may receive the second high frequency signal and output the second high frequency signal.
In the present application, the first high-frequency signal is subjected to frequency-reducing processing by the first mixer 312, so that a low-frequency signal with a lower frequency can be obtained, and thus, in the process of transmitting the low-frequency signal from the processing module 31 to the antenna module 32, the loss of power can be reduced; the low-frequency signal is subjected to frequency up-conversion processing by the second mixer 321, so that a second high-frequency signal with a higher frequency can be obtained, and the second high-frequency signal transmitted to the antenna port 322 by the second mixer 321 can keep the original frequency as much as possible.
Alternatively, fig. 4 provides a schematic structural diagram of a signal processing apparatus 400. As shown in fig. 4, the antenna module further includes a first switch 401, the first switch 401 including a first switch port 4011 and a second switch port 4012. Wherein the first switch 401 may be a single pole double throw switch. The first switch 401 may be used to provide two different connection manners for the second mixer 321, for example, the output port of the second mixer 321 may be connected to the antenna port 322 through the first switch port 4011, or the output port of the second mixer 321 may be connected to the control module 311 through the second switch port 4012, so as to establish two different paths for the second mixer 321 to transmit the second high frequency signal. The two paths can be specifically as follows:
A first passage: the second mixer 321 transmits a second high frequency signal to the antenna port 322 through the first switch port 4011 of the first switch 401. Specifically, the output port of the second mixer 321 transmits the second high frequency signal to the first switch port 4011, and the first switch port 4011 may transmit the second high frequency signal to the antenna port 322 when receiving the second high frequency signal. Accordingly, the antenna port 322 may receive the second high frequency signal from the second mixer 321 through the first switch port 4011, and output the second high frequency signal through the antenna port 322.
The second path: the second mixer 321 transmits a second high frequency signal to the control module 311 through the second switch port 4012 of the first switch 401. Specifically, the output port of the second mixer 321 sends a second high frequency signal to the second switch port 4012, and the second switch port 4012 may send the second high frequency signal to the control module 311 when receiving the second high frequency signal. Accordingly, the control module 311 may receive the second high frequency signal from the second mixer 321 through the second switch port 4012 and measure the power of the second high frequency signal.
Alternatively, the control module 311 may include a power measurement port 3112, the power measurement port 3112 being connected to the second switch port 4012. Specifically, the control module 311 may receive the above-mentioned second high frequency signal transmitted by the second switch port 4012 through the power measurement port 3112. Alternatively, the power measurement port 3112 may be a transmit signal detection (tx_det) port, i.e., the control module 311 may receive the second high frequency signal via the tx_det port.
In one implementation, the control module 311 may derive the adjustment signal after measuring the power of the second high frequency signal. The adjustment signal may be used to adjust the amplitude of local oscillation signals (e.g., the first local oscillation signal and the second local oscillation signal). The control module 311 may send the adjustment signal to the first mixer 312; accordingly, the first mixer 312 may receive the adjustment signal and adjust the amplitude of the first local oscillator signal according to the adjustment signal. The control module 311 may send the above adjustment signal to the second mixer 321; accordingly, the second mixer 321 may receive the adjustment signal and adjust the amplitude of the second local oscillation signal according to the adjustment signal.
Alternatively, the control module 311 may include an adjustment signal output port 3113, where the adjustment signal output port 3113 is connected to the second input port of the first mixer 312, and the adjustment signal output port 3113 is connected to the second input port of the second mixer 321. Specifically, the control module 311 may transmit the adjustment signal to the second input port of the first mixer 312 and transmit the adjustment signal to the second input port of the second mixer 321 through the adjustment signal output port 3113. Alternatively, the adjustment signal output port 3113 may be a transmit signal control (tx_ctr) port, i.e., the control module may send the adjustment signal via the tx_ctr port. It should be noted that the adjustment signal may be ctr signal, which is not limited in this application.
In this application, the second mixer 321 sends the second high-frequency signal to the control module 311 through the second switch port 4012, so that the control module 311 can measure the power of the second high-frequency signal, thereby adjusting the amplitude of the local oscillator signal according to the power of the second high-frequency signal, and further enabling the first mixer 312 and the second mixer 321 to obtain a better mixing effect according to the adjusted local oscillator signal.
Alternatively, fig. 5 provides a schematic structural diagram of a signal processing apparatus 500. As shown in fig. 5, the processing module 31 further includes a low frequency power amplifier 501, and the low frequency power amplifier 501 is connected to the first mixer 312. Wherein the low frequency power amplifier 501 may be used to amplify the power of the low frequency signal to achieve a high power output. Specifically, the output port of the first mixer 312 is connected to a first input port of the low frequency power amplifier 501. In one implementation, the first mixer 312 mixes the first high frequency signal and the first local oscillator signal to obtain a reference low frequency signal, and sends the reference low frequency signal to the first input port of the low frequency power amplifier 501 through the output port of the first mixer 312. Accordingly, the low frequency power amplifier 501 receives the reference low frequency signal from the first input port.
It should be noted that, if the high-frequency signal (such as the first high-frequency signal) is amplified, a high-frequency power amplifier with higher device cost is needed to compensate the power loss. In this application, after the first high-frequency signal is mixed by the first mixer 312, a low-frequency signal is obtained, and the power amplification of the low-frequency signal can be easily implemented by the low-frequency power amplifier 501, so that the device cost is reduced, and the implementation difficulty of the power amplification is reduced.
Optionally, the low frequency power amplifier 501 may also be connected to the control module 311. Specifically, the adjustment signal output port 3113 of the control module 311 is connected to the second input port of the low frequency power amplifier 501.
In one implementation, the control module 311 sends the adjustment signal to the second input port of the low frequency power amplifier 501 through the adjustment signal output port 3113. Accordingly, the low frequency power amplifier 501 receives the adjustment signal from the second input port, so as to amplify the power of the reference low frequency signal according to the adjustment signal, thereby obtaining the low frequency signal.
The adjustment signal may also adjust the gain of the low frequency power amplifier 501. For example, if the power of the low frequency signal subjected to power amplification by the low frequency power amplifier 501 is smaller than the minimum threshold value, the gain of the low frequency power amplifier 501 may be increased according to the adjustment signal; if the power of the low frequency signal power amplified by the low frequency power amplifier 501 is greater than the maximum threshold value, the gain of the low frequency power amplifier 501 may be reduced according to the adjustment signal. The minimum threshold value and the maximum threshold value may be set, which is not limited in this application.
Optionally, the low frequency power amplifier 501 may also be connected to the second mixer 321. Specifically, the output port of the low frequency power amplifier 501 is connected to the input port of the second mixer 321.
In one implementation, the low frequency power amplifier 501 sends the low frequency signal through an output port to an input port of the second mixer 321; accordingly, the second mixer 321 receives the low frequency signal from the input port and performs a mixing process according to the low frequency signal and the second local oscillation signal.
Alternatively, fig. 6 provides a schematic structural diagram of a signal processing apparatus 600. As shown in fig. 6, the antenna module 32 further includes a second switch 601, and the second switch 601 includes a third switch port 6011 and a fourth switch port 6012. Wherein the second switch 601 may be a single pole double throw switch. The second switch 601 may be used to provide two different connection manners for the antenna port 322, so that the antenna port 322 may be connected to the second mixer 321 through the third switch port 6011, or so that the antenna port 322 may be connected to the control module 311 through the fourth switch port 6012, thereby providing two different paths for a signal passing through the antenna port 322. The two paths may be used to transmit an output signal and an input signal (e.g., the first input signal described above), respectively, and may be specifically as follows:
An output path: the second mixer 321 transmits a second high-frequency signal to the antenna port 322 through the third switch port 6011. Specifically, the output port of the second mixer 321 may transmit the second high frequency signal to the third switch port 6011 through the first switch port 4011, and the third switch port 6011 may transmit the second high frequency signal to the antenna port 322 when receiving the second high frequency signal. Accordingly, the antenna port 322 may receive the second high frequency signal from the second mixer 321 through the third switch port 6011 and output the second high frequency signal.
An input path: the antenna port 322 receives the first input signal and transmits the first input signal to the control module 311 through the fourth switch Guan Duankou 6012. Accordingly, the control module 311 receives the first input signal from the fourth switch Guan Duankou 6012.
Optionally, as shown in fig. 6, the antenna module 32 further includes a third switch 602, the third switch 602 including a fifth switch port 6021 and a sixth switch port 6022. The third switch 602 is connected to the second switch 601; specifically, the fifth switch port 6021 of the third switch 602 is connected to the fourth switch Guan Duankou 6012 of the second switch 601, and the sixth switch port 6022 of the third switch 602 is connected to the fourth switch port 6012 of the second switch 601. Wherein the third switch 602 may be a single pole double throw switch. The third switch 602 may be used to provide two different transmission paths for the first input signal transmitted by the second switch 601.
In one implementation, the antenna port 322 may transmit the first input signal to the fifth switch port 6021 of the third switch 602 through the fourth switch Guan Duankou 6012; accordingly, the fifth switch port 6021 of the third switch 602 receives the first input signal.
In another implementation, the antenna port 322 may transmit the first input signal to the sixth opening Guan Duankou 6022 of the third switch 602 through the fourth opening Guan Duankou 6012; accordingly, the sixth opening Guan Duankou 6022 of the third switch 602 receives the first input signal.
Optionally, the antenna module 32 further includes a low noise amplifier 603, and the low noise amplifier 603 is connected to the third switch 602. Specifically, the input port of the low noise amplifier 603 is connected to the sixth switch port 6022 of the third switch 602. The low noise amplifier 603 may be used to reduce the noise figure of the signal processing device input path to maintain the sensitivity of the input signal during long range transmission. It should be noted that the low noise amplifier 603 may be as close to the antenna port 322 as possible to reduce the noise figure of the input path as soon as possible when the input signal is received from the antenna port 322.
Optionally, the antenna module 32 further comprises a fourth switch 604, the fourth switch 604 comprising a seventh switch Guan Duankou 6041 and an eighth switch port 6042. Specifically, the fifth switch port 6021 of the third switch 602 is connected to the seventh switch Guan Duankou 6041 of the fourth switch 604, and the seventh switch port 6041 is connected to the control module 311; the output port of the low noise amplifier 603 is connected to the eighth opening Guan Duankou 6042 of the fourth switch 604, and the eighth switch port 6042 is connected to the control module 311. The fourth switch 604 may be a single pole double throw switch. The fourth switch 604 may be configured to receive the input signals on the two transmission paths provided by the third switch 602, and send the input signals on the two transmission paths to the control module 311 respectively.
In one implementation, after the fifth switch port 6021 of the third switch 602 receives the first input signal, the first input signal may be sent to the seventh switch Guan Duankou 6041 of the fourth switch 604 through the fifth switch port 6021. Accordingly, the seventh switch Guan Duankou 6041 of the fourth switch 604 receives the first input signal and transmits the first input signal to the control module 311. Correspondingly, the control module 311 receives the first input signal and measures the signal strength of the first input signal to obtain a first RSSI signal.
In another implementation, after the sixth opening Guan Duankou 6022 of the third switch 602 receives the first input signal, the first input signal may be sent to the input port of the low noise amplifier 603 through the sixth opening Guan Duankou 6022. Correspondingly, after the low noise amplifier 603 receives the first input signal, noise coefficient processing is performed on the first input signal to obtain a second input signal, and the second input signal is sent to the eighth opening Guan Duankou 6042 through the output port of the low noise amplifier 603. Accordingly, eighth opening Guan Duankou 6042 receives the second input signal and transmits the second input signal to control module 311. Correspondingly, the control module 311 receives the second input signal and measures the signal strength of the second input signal to obtain a second RSSI signal.
In one implementation, the control module 311 may compensate the second input signal according to the first RSSI signal and the second RSSI signal to obtain the third input signal. Optionally, the control module 311 further includes an input port. Specifically, the control module 311 may receive the third input signal through the input port.
Alternatively, fig. 7 provides a schematic structural diagram of a signal processing apparatus 700. As shown in fig. 7, the antenna module 32 may include a splitter 701, and the splitter 701 is connected to the second switch 601. Specifically, the input port of the splitter 701 is connected to the fourth switch port 6012 of the second switch 601. Wherein the splitter 701 may be configured to split a first input signal into a plurality of paths such that the first input signal may be transmitted over a plurality of different paths. It should be noted that the two input signals (e.g., the input signal 1 and the input signal 2) split by the splitter 701 may be identical, so that the two identical input signals are processed differently on different paths, and the two signals are received by the control module 311, so that the RSSI of the actual input signal is determined according to the received signal strength indication (Received Signal Strength Indicator, RSSI) of the two signals.
In one implementation, antenna port 322 transmits the first input signal to the input port of splitter 701 through fourth switch Guan Duankou 6012. Accordingly, the input port of the splitter 701 receives the first input signal and splits the first input signal to obtain the input signal 1 and the input signal 2. It should be noted that the splitter 701 may include two output ports (e.g., a first output port and a second output port) for transmitting the input signal 1 and the input signal 2, respectively. Specifically, the first output port of the splitter 701 is connected to the input port 1 of the control module 311; the second output port of the splitter 701 is connected to the input port of the low noise amplifier 603, and the output port of the low noise amplifier 603 is connected to the input port 2 of the control module 311.
The transmission paths of the input signal 1 and the input signal 2 are specifically as follows:
transmission path of input signal 1: the splitter 701 sends an input signal 1 to the input port 1 of the control module 311 via a first output port. Correspondingly, the input port 1 of the control module 311 receives the input signal 1, and measures the signal strength of the input signal 1 to obtain a first RSSI signal.
Transmission path of input signal 2: splitter 701 transmits input signal 2 through a second output port to the input port of low noise amplifier 603. Accordingly, the low noise amplifier 603 receives the input signal 2 from the input port of the low noise amplifier 603, performs noise factor processing on the input signal 2 to obtain the input signal 3, and sends the input signal 3 to the input port 2 of the control module 311 through the output port of the low noise amplifier 603. Correspondingly, the input port 2 of the control module 311 receives the input signal 3, and measures the signal strength of the input signal 3 to obtain a second RSSI signal.
It should be noted that, the control module 311 may receive the input signal 1 through the input port 1 and the input signal 3 through the input port 2. Alternatively, the input port 1 and the input port 2 may be the same port or different ports, which is not limited in this application. Alternatively, the input port 1 and the input port 2 may be the same port as the input port that receives the third input signal, or may be different ports, which is not limited in this application.
As can be seen from the above embodiments corresponding to fig. 6 and fig. 7, the present application may provide two transmission paths for the first input signal through the third switch 602 and the fourth switch 604, and may also provide two transmission paths for the first input signal through the splitter 701. Since the third switch 602 and the splitter 701 are located before the low noise amplifier 603, and the splitter 701 may cause a power loss to the input path that is greater than the power loss caused to the input path by the third switch 602, for example: splitter 701 may cause a 3dB power loss and third switch 602 may cause a 0.5dB power loss. Therefore, the third switch 602 and the fourth switch 604 may be preferably used to provide two transmission paths for the first input signal, so as to maintain the sensitivity of the input signal during the long-distance transmission.
In the present application, the control module 311 may obtain a first RSSI signal of the first input signal that is not subjected to noise coefficient processing by receiving the first input signal; receiving the second input signal, so as to obtain a second RSSI signal of the second input signal subjected to noise coefficient processing; therefore, the signal strength of the second input signal is supplemented according to the difference value between the first RSSI signal and the second RSSI signal, so that the third input signal received by the control module 311 is more accurate.
In this embodiment of the present application, the control module 311 sends a first high-frequency signal to the first mixer 312, so that after the first mixer 312 receives the first high-frequency signal and generates a first local oscillator signal, the first high-frequency signal may be subjected to frequency reduction processing to obtain a low-frequency signal, thereby reducing power loss in the process of transmitting the low-frequency signal to the second mixer 321; after the second mixer 321 receives the low frequency signal from the first mixer 312 and generates the second local oscillation signal, the low frequency signal may be up-converted to obtain a second high frequency signal, and then the second high frequency signal is sent to the antenna port 322, so that the second high frequency signal sent by the antenna port 322 maintains the original frequency as much as possible.
Referring to fig. 8, fig. 8 is a flowchart of a signal processing method according to an embodiment of the present application. The signal processing method can be realized by the signal processing device. The signal processing device comprises a processing module and an antenna module, wherein the processing module comprises a control module and a first mixer, and the antenna module comprises a second mixer and an antenna port; the control module is connected with the first mixer and the second mixer; the second mixer is connected with the antenna port; the first mixer is connected with the second mixer. The signal processing device can be configured in a signal processing device, and the signal processing device can be used for reducing power loss. As shown in fig. 8, the signal processing method includes, but is not limited to, the following steps S801 to S803.
S801, mixing a first high-frequency signal and a first local oscillator signal to obtain a low-frequency signal;
s802, mixing the low-frequency signal and the second local oscillation signal to obtain a second high-frequency signal;
s803, a second high frequency signal is transmitted through the antenna port.
It should be noted that, the embodiment corresponding to fig. 8 and the embodiment of the signal processing apparatus are based on the same concept, and the technical effects brought by the same concept are also the same, and the specific principle is please refer to the detailed description in the embodiment of the signal processing apparatus, which is not repeated herein.
In the embodiment of the application, the first high-frequency signal and the first local oscillation signal are mixed to obtain the low-frequency signal with lower frequency than the first high-frequency signal, so that the power loss is reduced in the process of transmitting the low-frequency signal from the processing module to the antenna module; by mixing the low frequency signal with the second local oscillation signal, a second high frequency signal having a frequency higher than that of the low frequency signal can be obtained, so that the second high frequency signal transmitted from the antenna port can keep the original frequency as much as possible.
Embodiments of the present application also provide a computer readable storage medium having one or more instructions stored therein, the one or more instructions being adapted to be loaded by a processor and to perform the methods provided by the method embodiments described above.
The present application also provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method provided by the method embodiments described above.
With respect to each of the apparatuses and each of the modules/units included in the products described in the above embodiments, it may be a software module/unit, a hardware module/unit, or a software module/unit, and a hardware module/unit. For example, each module/unit included in each device or product applied to or integrated in the chip may be implemented in hardware such as a circuit, or at least part of the modules/units may be implemented in software program, where the software program runs on an integrated processor inside the chip, and the rest (if any) of the modules/units may be implemented in hardware such as a circuit; for each device and product applied to or integrated in the chip module, each module/unit contained in the device and product can be realized in a hardware manner such as a circuit, different modules/units can be located in the same piece (such as a chip, a circuit module and the like) or different components of the chip module, or at least part of the modules/units can be realized in a software program, the software program runs on a processor integrated in the chip module, and the rest (if any) of the modules/units can be realized in a hardware manner such as a circuit; for each device, product, or application to or integrated with the terminal, the included modules/units may all be implemented in hardware such as a circuit, and different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components in the terminal, or at least some modules/units may be implemented in a software program, where the software program runs on a processor integrated inside the terminal, and the remaining (if any) some modules/units may be implemented in hardware such as a circuit.
It should be noted that, for simplicity of description, the foregoing method embodiments are all expressed as a series of action combinations, but it should be understood by those skilled in the art that the present application is not limited by the described order of action, as some steps may take other order or be performed simultaneously according to the present application. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required in the present application.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be implemented by a program to instruct related hardware, the program may be stored in a computer readable storage medium, and the readable storage medium may include: flash disk, read-Only Memory (ROM), random-access Memory (Random Access Memory, RAM), magnetic or optical disk, and the like.
The descriptions of the embodiments provided in the present application may be referred to each other, and the descriptions of the embodiments are focused on, and for the part that is not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments. For convenience and brevity of description, for example, reference may be made to the related descriptions of the method embodiments of the present application for the functions and operations performed by the devices and apparatuses provided by the embodiments of the present application, and reference may also be made to each other, combined or cited between the method embodiments, and between the device embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A signal processing apparatus, characterized in that the signal processing apparatus comprises: the antenna module comprises a second mixer and an antenna port; the control module is connected with the first mixer; the second mixer is connected with the antenna port; the first mixer is connected with the second mixer;
the control module is used for sending a first high-frequency signal to the first mixer;
the first mixer is configured to generate a first local oscillator signal, mix the first high-frequency signal with the first local oscillator signal to obtain a low-frequency signal, and send the low-frequency signal to the second mixer;
The second mixer is configured to generate a second local oscillator signal, mix the low frequency signal with the second local oscillator signal to obtain a second high frequency signal, and send the second high frequency signal to the antenna port;
the antenna port is used for outputting the second high-frequency signal.
2. The signal processing device of claim 1, wherein the antenna module further comprises a first switch comprising a first switch port and a second switch port, the second mixer connected to the first switch port, the first switch port connected to the antenna port; the second mixer is connected with the second switch port, the second switch port is connected with the control module, and the control module is connected with the second mixer;
the second mixer is configured to, when sending the second high-frequency signal to the antenna port, specifically send the second high-frequency signal to the antenna port through the first switch port;
the second mixer is further configured to send the second high-frequency signal to the control module through the second switch port;
the control module is also used for measuring the power of the second high-frequency signal to obtain an adjustment signal; transmitting the adjustment signal to the first mixer; transmitting the adjustment signal to the second mixer;
The first mixer is further configured to adjust an amplitude of the first local oscillation signal according to the adjustment signal;
the second mixer is further configured to adjust an amplitude of the second local oscillation signal according to the adjustment signal.
3. The signal processing device of claim 1, wherein the control module comprises a high frequency signal output port and an adjustment signal output port; the high-frequency signal output port is used for sending the first high-frequency signal to the first mixer; the adjusting signal output port is configured to send the adjusting signal to the first mixer and send the adjusting signal to the second mixer.
4. The signal processing device of claim 1, wherein the antenna module further comprises a second switch comprising a third switch port and a fourth switch Guan Duankou, the antenna port connected to the third switch port, the third switch port connected to the second mixer; the antenna port is connected with the fourth switch Guan Duankou, and the fourth switch port is connected with the control module;
the second mixer is configured to, when sending the second high-frequency signal to the antenna port, specifically send the second high-frequency signal to the antenna port through the third switch port;
The antenna port is further configured to receive a first input signal, and send the first input signal to the control module through the fourth switch Guan Duankou.
5. The signal processing device of claim 4, wherein the antenna module further comprises a third switch, a fourth switch, and a low noise amplifier, the third switch comprising a fifth switch port and a sixth switch Guan Duankou, the fourth switch comprising a seventh switch Guan Duankou and an eighth switch Guan Duankou; the fourth switch port is connected with the fifth switch port, the fifth switch port is connected with the seventh switch Guan Duankou, and the seventh switch port is connected with the control module; the fourth switch port is connected with the sixth switch Guan Duankou, the sixth switch port is connected with the input port of the low-noise amplifier, the output port of the low-noise amplifier is connected with the eighth switch Guan Duankou, and the eighth switch port is connected with the control module;
the antenna port is specifically configured to send the first input signal to the fifth switch port through the fourth switch Guan Duankou; the fifth switch port is configured to send the first input signal to the seventh switch port; the seventh opening Guan Duankou is configured to send the first input signal to the control module;
The antenna port is specifically configured to send the first input signal to the sixth switch port through the fourth switch Guan Duankou; the sixth opening Guan Duankou is configured to send the first input signal to an input port of the low noise amplifier;
the low-noise amplifier is used for carrying out noise coefficient processing on the first input signal to obtain a second input signal, and sending the second input signal to the eighth switch port through the output port of the low-noise amplifier; the eighth opening Guan Duankou is configured to send the second input signal to the control module;
the control module is used for receiving the first input signal from the seventh switch port, measuring the signal strength of the first input signal and obtaining a first RSSI signal; receiving the second input signal from the eighth switch port, and measuring the signal strength of the second input signal to obtain a second RSSI signal; and compensating the second input signal according to the first RSSI signal and the second RSSI signal to obtain a third input signal.
6. The signal processing device of claim 5, wherein the control module further comprises an input port for receiving the third input signal.
7. The signal processing device of claim 2, wherein the processing module further comprises a low frequency power amplifier, the output port of the first mixer being connected to a first input port of the low frequency power amplifier, the output port of the low frequency power amplifier being connected to an input port of the second mixer; the control module is connected with a second input port of the low-frequency power amplifier;
the first mixer is specifically configured to mix the first high-frequency signal and the first local oscillator signal to obtain a reference low-frequency signal, and send the reference low-frequency signal to a first input port of the low-frequency power amplifier;
the low-frequency power amplifier is used for amplifying the power of the reference low-frequency signal according to the adjusting signal to obtain the low-frequency signal, and sending the low-frequency signal to the second mixer.
8. A signal processing method, characterized in that the signal processing method is applied to a signal processing apparatus, the signal processing apparatus comprising: the antenna module comprises a second mixer and an antenna port; the control module is connected with the first mixer, and the control module is connected with the second mixer; the second mixer is connected with the antenna port; the first mixer is connected with the second mixer;
Mixing the first high-frequency signal and the first local oscillation signal to obtain a low-frequency signal;
mixing the low-frequency signal and the second local oscillation signal to obtain a second high-frequency signal;
and transmitting the second high-frequency signal through the antenna port.
9. A signal processing device, characterized in that the signal processing device comprises a signal processing apparatus as claimed in any one of claims 1-7.
10. A computer-readable storage medium storing one or more instructions adapted to be loaded by a processor and to perform the method of claim 8.
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