CN102752241B - Method, device and system for detecting quality of channel - Google Patents
Method, device and system for detecting quality of channel Download PDFInfo
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Abstract
The invention provides a method, a device and a system for detecting the quality of a channel. The method comprises the following steps of: acquiring an emission signal; acquiring a receiving signal which is a signal acquired by transmitting the emission signal in the channel to be detected; obtaining a signal-to-noise ratio according to the acquired emission signal and the acquired receiving signal; and detecting the quality of the channel to be detected according to the signal-to-noise ratio. By the embodiment of the invention, the quality of the channel can be easily and accurately detected.
Description
Technical Field
The present invention relates to mobile communications technologies, and in particular, to a method, an apparatus, and a system for detecting channel quality.
Background
In a communication system, in order to ensure the realization of system performance, an antenna, a feeder line and a radio frequency channel composed of an analog device are required to be capable of reliably modulating a baseband signal into a frequency band signal to be transmitted, or accurately demodulating the received frequency band signal into the baseband signal, but due to processing, device aging, nonlinear characteristics, temperature variation and the like, signal distortion and noise increase are caused, that is, the channel quality cannot be ensured, which seriously affects the system performance. At present, the channel quality detection can be carried out by adopting a standing wave detection mode.
Standing waves can be used to describe whether a line is effectively transmitting an input signal when an electromagnetic wave is transmitted. If the lines do not match the input signal impedance, the signal is reflected back, and the input signal and the reflected signal are superposed to form a standing wave. Standing waves are generally described by a Voltage Standing Wave Ratio (VSWR), i.e., the Ratio of the peak Voltage to the valley Voltage on a transmission line. The VSWR may be calculated based on the forward signal power and the reverse signal power, and then the calculated VSRW is compared with a preset threshold value to obtain a detection result.
However, the VSWR can only detect whether the impedances at the channel test points are matched, and the channel quality degradation caused by other factors, such as I/Q branch imbalance, local oscillator phase noise, filter loss, intermodulation interference, ADC/DAC noise, etc., cannot be detected. In other words, even if the VSWR detection passes, the channel cannot be determined to be qualified.
Disclosure of Invention
The embodiment of the invention provides a method, a device and a system for detecting channel quality, which can realize the accuracy and reliability of channel detection.
The embodiment of the invention provides a method for detecting channel quality, which comprises the following steps:
acquiring a transmitting signal;
acquiring a receiving signal, wherein the receiving signal is a signal obtained after the transmitting signal is transmitted in a channel to be detected;
obtaining a signal-to-noise ratio according to the obtained transmitting signal and the obtained receiving signal;
and detecting the quality of the channel to be detected according to the signal-to-noise ratio.
The embodiment of the invention provides a device for detecting channel quality, which comprises:
the first acquisition module is used for acquiring a transmitting signal;
the second acquisition module is used for acquiring a receiving signal, wherein the receiving signal is a signal obtained by the first acquisition module after the transmitting signal is transmitted in a channel to be detected;
the calculation module is used for obtaining a signal-to-noise ratio according to the transmitting signal acquired by the first acquisition module and the receiving signal acquired by the second acquisition module;
and the detection module is used for detecting the quality of the channel to be detected according to the signal-to-noise ratio obtained by the calculation module.
The embodiment of the invention provides a system for detecting channel quality, which comprises:
a transmitting device for generating a transmission signal;
the channel to be detected is used for transmitting and processing the transmitting signal generated by the transmitting device;
the detection device is used for receiving the transmitting signal after the transmission processing of the channel to be detected to obtain a receiving signal, acquiring the transmitting signal generated by the transmitting device, obtaining a signal-to-noise ratio according to the receiving signal and the transmitting signal, and detecting the quality of the channel to be detected by adopting the signal-to-noise ratio.
According to the technical scheme, the signal-to-noise ratio is adopted for channel detection in the embodiment of the invention, because various factors of the channel, such as imbalance of an I/Q branch, local oscillation phase noise, filter loss, intermodulation interference, ADC/DAC noise and the like, can finally form noise of the whole channel, and the signal-to-noise ratio can reflect the influence of various factors on the channel quality, the accuracy of the channel quality detection can be ensured by adopting the signal-to-noise ratio for channel quality detection, and the detection mode is simple and easy to implement.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
FIG. 1 is a schematic flow chart of a method according to a first embodiment of the present invention;
FIG. 2 is a schematic flow chart of a method according to a second embodiment of the present invention;
FIG. 3 is a schematic diagram of a system structure corresponding to a detection process in the embodiment of the present invention;
FIG. 4 is a schematic flow chart of a method according to a third embodiment of the present invention;
FIG. 5 is a schematic structural diagram of an apparatus according to a fourth embodiment of the present invention;
fig. 6 is a schematic structural diagram of a system according to a fifth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic flow chart of a method according to a first embodiment of the present invention, which includes:
step 11: acquiring a transmitting signal;
when detecting a channel in the transmission direction, the transmission signal may be a transmission signal generated by a local transmitter; the transmission signal is a transmission signal generated by a reference transmission unit when detecting a channel in the reception direction. In addition, the transmission signal may be a digital signal or an analog signal.
Step 12: acquiring a receiving signal, wherein the receiving signal is a signal obtained after the transmitting signal is transmitted in a channel to be detected;
the channel to be detected may be a channel in the transmission direction, and for example, includes a local transmission channel, a radiation unit connection port, and a radiation unit coupler. If the local transmitter produces a digital signal, the local transmit channel may include means for digital to analog conversion, frequency up conversion, power amplification, filtering, etc.
The channel to be detected may also be a channel in the receiving direction, for example, including a radiating element coupler, a radiating element connection port, and a local receiving channel. The local receive channel comprises, for example, means for filtering, power amplification, frequency down conversion, etc.
Step 13: obtaining a signal-to-noise ratio according to the obtained transmitting signal and the obtained receiving signal;
step 14: and detecting the quality of the channel to be detected according to the signal-to-noise ratio.
In the embodiment, the signal-to-noise ratio is adopted for channel detection, because various factors of the channel, such as imbalance of an I/Q branch, local oscillator phase noise, filter loss, intermodulation interference, ADC/DAC noise and the like, can finally form noise of the whole channel, and the signal-to-noise ratio can reflect the influence of various factors on the channel quality, the channel quality detection is carried out by adopting the signal-to-noise ratio, the accuracy of the channel quality detection can be ensured, and the detection mode is simple and easy to implement.
Fig. 2 is a schematic flow chart of a method according to a second embodiment of the present invention, which takes detecting a channel in an emission direction as an example. In the following embodiments, the signal-to-noise ratio will be calculated by taking a digital signal as an example, and it is understood that the signal-to-noise ratio and the detection can also be calculated by using an analog signal.
Fig. 3 is a schematic diagram of a system structure corresponding to a detection flow in an embodiment of the present invention, and with the structure shown in fig. 3, detection of a channel in a transmitting direction and a channel in a receiving direction can be completed. For example, for a transmit direction, a transmit signal enters the detection device via the local transmit channel, the radiating element connection port, the radiating element coupler, the reference receiving element; for the receiving direction, the transmitting signal enters the detecting device via the reference transmitting unit, the radiating element coupler, the radiating element connecting port and the local receiving channel. The first channel selection module and the second channel selection module can function as switches, for example, when the transmission direction is detected, the first channel selection module keeps a disconnection state, namely, the reference transmission unit and the radiation unit coupler are kept disconnected, and the second channel selection module keeps a connection state, namely, the radiation unit coupler and the reference receiving unit are kept connected, so that signals processed by the radiation unit coupler enter the reference receiving unit; when detecting the receiving direction, the first channel selection module maintains a connection state, i.e. maintains the connection between the reference transmitting unit and the radiating element coupler, while the second channel selection module maintains a disconnection state, i.e. maintains the disconnection between the radiating element coupler and the reference receiving unit, so that the transmitting signal transmitted by the reference transmitting unit enters the radiating element coupler and then enters the receiving channel. In fig. 3, the same detecting device is used for the transmitting direction and the receiving direction, but it is understood that one detecting device may be used for the transmitting direction and the other detecting device may be used for the receiving direction.
Referring to fig. 2, the present embodiment includes:
step 21: and the local transmitter corresponding to the channel to be detected generates a transmitting signal.
For example, if the channel to be detected includes transmission channel #1, the transmission signal generated by the local transmitter will be transmitted in transmission channel # 1.
The baseband processing module of the local transmitter may generate a first digital signal, where the first digital signal may be a digital baseband signal or a digital intermediate frequency signal, and the first digital signal may adopt a random sequence or a known sequence. For example, the first digital signal may be s (i), i ═ 0 to N-1.
In addition, referring to fig. 3, the reference transmitting unit may determine a transmitting channel to be detected, for example, transmitting channel #1, and then send an instruction to the transmitting channel to be detected, and the transmitting channel to be detected triggers the local transmitter to generate the first digital signal after receiving the instruction.
Step 22: and transmitting the transmission signal generated by the local transmitter by a local transmission channel in the channels to be detected.
For example, taking the local transmission channel as the transmission channel #1 as an example, the digital-to-analog converter, the up-converter, the power amplifier, etc. in the transmission channel #1 perform corresponding processing on the first digital signal generated by the local transmitter.
The first digital signal may be digital-to-analog converted by a digital-to-analog converter (DAC) to obtain a first analog signal, the up-converter may perform up-conversion on the first analog signal to obtain a radio frequency signal, and the power amplifier may perform power amplification on the radio frequency signal, and then perform filtering for transmission. For example, s (i) is converted into a corresponding analog intermediate frequency signal or analog baseband signal after digital-to-analog conversion, and the analog intermediate frequency signal or analog baseband signal is the first analog signal s (t). And then, the first analog signal is subjected to up-conversion to be a radio frequency signal, and then is subjected to power amplification and filtering and then is fed into the antenna.
Step 23: and the radiation unit connecting port in the channel to be detected transmits the transmission signal transmitted by the local transmission channel.
For example, the radiation unit connection port #1 transmits a transmission signal transmitted through the transmission channel # 1.
Step 24: and the radiation unit coupler in the channel to be detected performs coupling processing on the transmission signal transmitted by the radiation unit connecting port.
The coupling processing may divide the transmission signal into two paths, one path of the transmission signal is transmitted, and the other path of the transmission signal may couple the signal transmitted by the connection port of the radiation unit to the reference receiving unit to obtain the received signal.
Step 25: and the reference receiving unit receives the signal after the coupling processing of the coupler of the radiation unit to obtain a received signal.
The reference receiving unit may filter and downconvert the received signal to an analog intermediate frequency signal or an analog baseband signal, where the processed signal is a second analog signal, and then the second analog signal enters the digital processing module, and the digital processing module performs oversampling on the second analog signal to obtain a second digital signal r (k), where k is 0 to N-1. The sample sequence contains the original signal as well as noise that passed through the transmit channel.
Step 26: the detection device obtains a signal-to-noise ratio according to the transmitting signal and the receiving signal.
For example, taking the transmitting signal as the first digital signal and the receiving signal as the second digital signal as an example, the calculation formula for obtaining the signal-to-noise ratio may be:
wherein,
is the correlation coefficient of S (i) with R (k).
Wherein the detection means may derive the second digital signal from a reference receiving unit, it is furthermore understood that the reference receiving unit may also be integrated in the detection means. The first digital signal may be preconfigured, that is, the transmitted signal is determined at the time of detection, and at this time, the detection apparatus may obtain the first digital signal according to the configuration information; the local transmitter may send information of the first digital signal to the detection device after sending the first digital signal.
Step 27: if the signal-to-noise ratio is larger than or equal to a preset threshold value, the channel to be detected passes the detection, namely, the quality of the channel to be detected meets the requirement; otherwise, the detection is failed.
It may be that, when failing to detect, that is, if the calculated SNR is lower than the set threshold SNRThIf the transmitting channel is invalid, the alarm is given.
In this embodiment, if there are multiple transmission channels, each transmission channel needs to be detected. The transmission channel to be detected can be selected for detection by a switch, for example, a switch is provided in the second channel selection module, that is, the connection between the radiation unit coupler corresponding to the transmission channel to be detected and the reference receiving unit is maintained. During detection, each transmitting channel can be detected one by one, or a plurality of transmitting channels can be detected simultaneously.
In addition, the detection can be performed periodically, or the detection can be performed when the downlink traffic volume is small, so as to avoid affecting the normal traffic.
In the embodiment, the signal-to-noise ratio is adopted for channel detection, because various factors of the channel, such as imbalance of an I/Q branch, local oscillation phase noise, filter loss, intermodulation interference, ADC/DAC noise and the like, can finally form noise of the whole channel, and the signal-to-noise ratio can reflect the influence of various factors on the channel quality, the channel quality detection is carried out by adopting the signal-to-noise ratio, the accuracy of the channel quality detection can be ensured, and the detection mode is simple and easy to implement. In addition, the detection device can be positioned in the existing calibration unit, the detection is completed by using the existing resources, the hardware overhead is not required to be additionally increased, and the influence on the system is reduced.
Fig. 4 is a schematic flow chart of a method according to a third embodiment of the present invention, which takes detecting a receiving channel as an example. This embodiment may still be referred to as the system shown in fig. 3. Referring to fig. 4, the present embodiment includes:
step 41: the reference transmitting unit generates a transmission signal.
The reference transmitting unit may transmit a certain rf signal, where the digital baseband oversampling sequence corresponding to the rf signal is the first digital signal s (i), and i is 0 to N-1.
Step 42: and the radiation unit coupler in the channel to be detected performs coupling processing on the emission signal.
For example, if the channel to be detected includes the receiving channel #1, the radiating element coupler #1 is in an operating state, and couples the transmission signal to the radiating element connection port # 1.
Step 43: and a radiation unit connecting port in the channel to be detected receives the transmission signal after coupling processing by the radiation unit coupler.
For example, radiating element connection port #1 receives a transmit signal from radiating element coupler # 1.
Step 44: and transmitting the transmitting signal through a local receiving channel in the channel to be detected to obtain a receiving signal.
For example, the local receiving channel is the receiving channel #1), the receiving channel #1 performs filtering, power amplification and down-conversion on the received signal of the radiation unit connection port #1 to obtain a processed analog signal, and performs analog-to-digital conversion on the processed analog signal to obtain a second digital signal Rm(k)。
Step 45: the detection device obtains a signal-to-noise ratio according to the transmitting signal and the receiving signal.
For example, taking the transmitting signal as the first digital signal and the receiving signal as the second digital signal as an example, the calculation formula for obtaining the signal-to-noise ratio may be:
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is S (i) and Rm(k) The correlation coefficient of (2).
The detection device may obtain the second digital signal from the local receiving channel, or may be a separate device, such as a reference receiving unit, which obtains the second digital signal from the local receiving channel and sends the second digital signal to the detection device. The first digital signal may be preconfigured, that is, when detecting, the transmitted signal is determined, and at this time, the detecting device may obtain the first digital signal according to the configuration information; the reference transmitting unit may transmit information of the first digital signal to the detecting device after transmitting the first digital signal.
Step 46: if the signal-to-noise ratio is larger than or equal to a preset threshold value, the channel to be detected passes the detection, namely, the quality of the channel to be detected meets the requirement; otherwise, the detection is failed.
It may be that the SNR is calculated when not passing the detection, i.e. if the SNR is calculatedmSNR lower than a set threshold valueThIf the transmitting channel is invalid, the alarm is given.
In this embodiment, if there are multiple receiving channels, each receiving channel needs to be detected. The receiving channel to be detected can be selected for detection by a switch, for example, a switch is provided in the first channel selection module, that is, the connection between the radiation unit coupler corresponding to the receiving channel to be detected and the reference transmitting unit is maintained. During detection, each receiving channel can be detected one by one, or a plurality of receiving channels can be detected simultaneously.
In addition, the detection can be performed periodically, or the detection can be performed when the downlink traffic volume is small, so as to avoid affecting the normal traffic.
In the embodiment, the signal-to-noise ratio is adopted for channel detection, because various factors of the channel, such as imbalance of an I/Q branch, local oscillation phase noise, filter loss, intermodulation interference, ADC/DAC noise and the like, can finally form noise of the whole channel, and the signal-to-noise ratio can reflect the influence of various factors on the channel quality, the channel quality detection is carried out by adopting the signal-to-noise ratio, the accuracy of the channel quality detection can be ensured, and the detection mode is simple and easy to implement. In addition, the detection device can be positioned in the existing calibration unit, the detection is completed by using the existing resources, the hardware overhead is not required to be additionally increased, and the influence on the system is reduced.
Fig. 5 is a schematic structural diagram of an apparatus according to a fourth embodiment of the present invention, which includes a first obtaining module 51, a second obtaining module 52, a calculating module 53 and a detecting module 54; the first obtaining module 51 is configured to obtain a transmission signal; the second obtaining module 52 is configured to obtain a receiving signal, where the receiving signal is a signal obtained by transmitting the transmitting signal obtained by the first obtaining module in a channel to be detected; the calculating module 53 is configured to obtain a signal-to-noise ratio according to the transmitting signal acquired by the first acquiring module and the receiving signal acquired by the second acquiring module; the detection module 54 is configured to detect the quality of the channel to be detected according to the signal-to-noise ratio obtained by the calculation module.
The calculating module 53 specifically obtains the signal-to-noise ratio by using the following formula:
wherein,
(ii) a correlation coefficient of S (i) with R (k);
SNR is the signal-to-noise ratio, S (i) is the transmitted signal, and R (k) is the received signal.
The detection module 54 is specifically configured to: if the signal-to-noise ratio is smaller than a preset threshold value, the channel to be detected does not pass the detection; and if the signal-to-noise ratio is larger than or equal to a preset threshold value, the channel to be detected passes the detection.
In the embodiment, the signal-to-noise ratio is adopted for channel detection, because various factors of the channel, such as imbalance of an I/Q branch, local oscillator phase noise, filter loss, intermodulation interference, ADC/DAC noise and the like, can finally form noise of the whole channel, and the signal-to-noise ratio can reflect the influence of various factors on the channel quality, the channel quality detection is carried out by adopting the signal-to-noise ratio, the accuracy of the channel quality detection can be ensured, and the detection mode is simple and easy to implement.
Fig. 6 is a schematic structural diagram of a system according to a fifth embodiment of the present invention, which includes a transmitting device 61, a channel to be detected 62 and a detecting device 63; the transmitting device 61 is used for generating a transmitting signal; the channel 62 to be detected is used for transmitting and processing the transmitting signal generated by the transmitting device; the detection device 63 is configured to receive the transmission signal after transmission processing of the channel to be detected to obtain a received signal, obtain the transmission signal generated by the transmission device, obtain a signal-to-noise ratio according to the received signal and the transmission signal, and detect the quality of the channel to be detected by using the signal-to-noise ratio.
The transmitting device 61 may be a local transmitter corresponding to the channel to be detected; the channel 62 to be detected comprises a local transmitting channel, a radiation unit connecting port and a radiation unit coupler; the local transmitting channel is used for transmitting the transmitting signal generated by the local transmitter; the radiation unit connection port is used for transmitting the transmission signal transmitted by the local transmission channel; the radiation unit coupler is used for coupling the transmission signal transmitted by the radiation unit connection port; the detection device is specifically configured to: and receiving the transmitting signal after coupling processing by the radiation unit coupler to obtain the receiving signal.
Alternatively, the transmitting device 61 may be a reference transmitting unit; the channel 62 to be detected comprises a radiation unit coupler, a radiation unit connection port and a local receiving channel; the radiation unit coupler is used for coupling the transmission signal generated by the reference transmission unit; the radiation unit connection port is used for receiving the transmission signal after the coupling processing of the radiation unit coupler; the local receiving channel is used for transmitting the transmitting signal received by the radiation unit connecting port; the detection device is specifically configured to: and receiving the transmitting signal transmitted through the local receiving channel to obtain the receiving signal.
In addition, the detecting device 63 of the present embodiment may be as shown in fig. 5.
In addition, the system of this embodiment may be configured with both the module for the transmitting direction and the module for the receiving direction, and adopt the channel selection module to select and detect the transmitting direction or the receiving direction. That is, the present embodiment may also be:
the transmitting device includes: a local transmitter and a reference transmission unit; the channel to be detected comprises: the device comprises a local transmitting channel, a local receiving channel, a radiation unit connecting port and a radiation unit coupler; the system further comprises: the device comprises a first channel selection module, a second channel selection module and a reference receiving unit; the first channel selection module is respectively connected with the reference emission unit and the radiation unit coupler and used for keeping a disconnection state when detecting the emission direction so as to disconnect the reference emission unit and the radiation unit coupler and keeping a connection state when detecting the receiving direction so as to keep the reference emission unit and the radiation unit coupler connected; the second channel selection module is respectively connected with the radiation unit coupler and the reference receiving unit and used for keeping a connection state when detecting a transmitting direction so as to keep the connection of the radiation unit coupler and the reference receiving unit and keeping a disconnection state when detecting a receiving direction so as to disconnect the connection of the radiation unit coupler and the reference receiving unit; the local transmitter is used for generating the transmission signal when detecting the transmission direction; the local transmitting channel is used for transmitting the transmitting signal generated by the local transmitter when detecting the transmitting direction; the radiation unit connection port is used for transmitting the transmission signal transmitted through the local transmission channel when the transmission direction is detected; the radiation unit coupler is used for coupling the transmission signal transmitted by the radiation unit connecting port when detecting the transmission direction; the reference receiving unit is used for receiving the transmitting signal processed by the radiating unit coupler to obtain the receiving signal; the detection device is specifically configured to receive the received signal obtained by the reference receiving unit. The reference transmitting unit is used for generating the transmitting signal when detecting the receiving direction; the radiation unit coupler is used for coupling the transmission signal generated by the reference transmission unit when detecting the receiving direction; the radiation unit connection port is used for receiving the transmission signal after coupling processing of the radiation unit coupler when the receiving direction is detected; the local receiving channel is used for transmitting the transmitting signal received by the connecting port of the radiation unit when detecting the receiving direction; the radiation unit connection port is used for transmitting the transmission signal transmitted through the local transmission channel when the transmission direction is detected; the reference receiving unit is specifically configured to receive the transmit signal transmitted through the local receiving channel when detecting a receiving direction, so as to obtain the receive signal; the detection device is specifically configured to receive the received signal obtained by the reference receiving unit.
Further, the first channel selection module is further configured to select the channel to be detected from among a plurality of receiving channels, or the second channel selection module is further configured to select the channel to be detected from among a plurality of transmitting channels.
In the embodiment, the signal-to-noise ratio is adopted for channel detection, because various factors of the channel, such as imbalance of an I/Q branch, local oscillator phase noise, filter loss, intermodulation interference, ADC/DAC noise and the like, can finally form noise of the whole channel, and the signal-to-noise ratio can reflect the influence of various factors on the channel quality, the channel quality detection is carried out by adopting the signal-to-noise ratio, the accuracy of the channel quality detection can be ensured, and the detection mode is simple and easy to implement.
It will be appreciated that the relevant features of the method and apparatus described above are referred to one another. In addition, "first", "second", and the like in the above embodiments are for distinguishing the embodiments, and do not represent merits of the embodiments.
Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (15)
1. A method of detecting channel quality, comprising:
acquiring a transmitting signal;
acquiring a receiving signal, wherein the receiving signal is a signal obtained after the transmitting signal is transmitted in a channel to be detected;
obtaining a signal-to-noise ratio according to the obtained transmitting signal and the obtained receiving signal;
detecting the quality of the channel to be detected according to the signal-to-noise ratio;
wherein, the channel to be detected is a channel in the emission direction, and the acquiring the emission signal includes: acquiring the transmitting signal generated by a local transmitter corresponding to the channel to be detected;
or, the channel to be detected is a channel in the receiving direction, and the acquiring the transmission signal includes: acquiring the transmission signal generated by a reference transmission unit;
the channel to be detected is a channel in the transmitting direction, and the acquiring of the receiving signal comprises:
receiving the transmitting signal transmitted by a local transmitting channel, a radiation unit connecting port and a radiation unit coupler in the channel to be detected to obtain a receiving signal;
or,
the channel to be detected is a channel in a receiving direction, and the acquiring of the receiving signal includes:
and receiving the transmitting signal transmitted through the radiation unit coupler, the radiation unit connecting port and the local receiving channel in the channel to be detected to obtain the receiving signal.
2. The method according to claim 1, characterized in that when the channel to be detected is a channel in the emission direction;
the transmission signal is transmitted to the radiation unit connecting port through the local transmission channel, is transmitted to the radiation unit coupler through the radiation unit connecting port, and is coupled by the radiation unit coupler.
3. The method according to claim 1, characterized in that when the channel to be detected is a channel in the receiving direction;
the transmission signal is coupled and processed by the radiation unit coupler, received by the radiation unit connecting port and transmitted through the local receiving channel.
4. A method according to claim 2 or 3, characterized in that the channel to be detected is selected from a plurality of channels by means of a switch.
5. The method of claim 1, wherein the transmit signal is:
a transmission signal generated after the detection time is determined periodically;
or,
and generating a transmission signal after the detection moment determined according to the downlink traffic.
6. The method according to claim 1, wherein the deriving the signal-to-noise ratio from the acquired transmit signal and the acquired receive signal is specifically: the signal-to-noise ratio is obtained by the following formula:
wherein,
SNR is the signal-to-noise ratio, S (i) is the transmitted signal, and R (k) is the received signal.
7. The method according to claim 6, wherein said detecting the quality of the channel to be detected according to the signal-to-noise ratio comprises:
if the signal-to-noise ratio is smaller than a preset threshold value, the channel to be detected does not pass the detection; and if the signal-to-noise ratio is larger than or equal to a preset threshold value, the channel to be detected passes the detection.
8. An apparatus for detecting channel quality, comprising:
the first acquisition module is used for acquiring a transmitting signal;
the second acquisition module is used for acquiring a receiving signal, wherein the receiving signal is a signal obtained by the first acquisition module after the transmitting signal is transmitted in a channel to be detected;
the calculation module is used for obtaining a signal-to-noise ratio according to the transmitting signal acquired by the first acquisition module and the receiving signal acquired by the second acquisition module;
the detection module is used for detecting the quality of the channel to be detected according to the signal-to-noise ratio obtained by the calculation module;
wherein, the channel to be detected is a channel in the emission direction, and the acquiring the emission signal includes: acquiring the transmitting signal generated by a local transmitter corresponding to the channel to be detected;
or, the channel to be detected is a channel in the receiving direction, and the acquiring the transmission signal includes: acquiring the transmission signal generated by a reference transmission unit;
the channel to be detected is a channel in the transmitting direction, and the acquiring of the receiving signal comprises:
receiving the transmitting signal transmitted by a local transmitting channel, a radiation unit connecting port and a radiation unit coupler in the channel to be detected to obtain a receiving signal;
or,
the channel to be detected is a channel in a receiving direction, and the acquiring of the receiving signal includes:
and receiving the transmitting signal transmitted through the radiation unit coupler, the radiation unit connecting port and the local receiving channel in the channel to be detected to obtain the receiving signal.
9. The apparatus of claim 8, wherein the computing module obtains the snr by specifically using the following equation:
wherein,
SNR is the signal-to-noise ratio, S (i) is the transmitted signal, and R (k) is the received signal.
10. The apparatus of claim 9, wherein the detection module is specifically configured to:
if the signal-to-noise ratio is smaller than a preset threshold value, the channel to be detected does not pass the detection; and if the signal-to-noise ratio is larger than or equal to a preset threshold value, the channel to be detected passes the detection.
11. A system for detecting channel quality, comprising:
a transmitting device for generating a transmission signal;
the channel to be detected is used for transmitting and processing the transmitting signal generated by the transmitting device;
the detection device is used for receiving the transmitting signal transmitted and processed by the channel to be detected to obtain a receiving signal, acquiring the transmitting signal generated by the transmitting device, obtaining a signal-to-noise ratio according to the receiving signal and the transmitting signal, and detecting the quality of the channel to be detected by adopting the signal-to-noise ratio;
the transmitting device includes: a local sender and/or a reference transmission unit;
the transmitting device is a local transmitter corresponding to the channel to be detected;
the channel to be detected comprises a local transmitting channel, a radiation unit connecting port and a radiation unit coupler;
or,
the transmitting device is a reference transmitting unit;
the channel to be detected comprises a radiation unit coupler, a radiation unit connecting port and a local receiving channel.
12. The system according to claim 11, wherein the transmitting device is a local transmitter corresponding to the channel to be detected;
the local transmitting channel is used for transmitting the transmitting signal generated by the local transmitter;
the radiation unit connection port is used for transmitting the transmission signal transmitted by the local transmission channel;
the radiation unit coupler is used for coupling the transmission signal transmitted by the radiation unit connection port;
the detection device is specifically configured to: and receiving the transmitting signal after coupling processing by the radiation unit coupler to obtain the receiving signal.
13. The system of claim 11, wherein the transmitting means is a reference transmitting unit;
the radiation unit coupler is used for coupling the transmission signal generated by the reference transmission unit;
the radiation unit connection port is used for receiving the transmission signal after the coupling processing of the radiation unit coupler;
the local receiving channel is used for transmitting the transmitting signal received by the radiation unit connecting port;
the detection device is specifically configured to: and receiving the transmitting signal transmitted through the local receiving channel to obtain the receiving signal.
14. The system of claim 11,
the transmitting device includes: a local transmitter and a reference transmission unit;
the channel to be detected comprises: the device comprises a local transmitting channel, a local receiving channel, a radiation unit connecting port and a radiation unit coupler;
the system further comprises: the device comprises a first channel selection module, a second channel selection module and a reference receiving unit;
the first channel selection module is respectively connected with the reference emission unit and the radiation unit coupler and used for keeping a disconnection state when detecting the emission direction so as to disconnect the reference emission unit and the radiation unit coupler and keeping a connection state when detecting the receiving direction so as to keep the reference emission unit and the radiation unit coupler connected;
the second channel selection module is respectively connected with the radiation unit coupler and the reference receiving unit and used for keeping a connection state when detecting a transmitting direction so as to keep the connection of the radiation unit coupler and the reference receiving unit and keeping a disconnection state when detecting a receiving direction so as to disconnect the connection of the radiation unit coupler and the reference receiving unit;
the local transmitter is used for generating the transmission signal when detecting the transmission direction; the local transmitting channel is used for transmitting the transmitting signal generated by the local transmitter when detecting the transmitting direction; the radiation unit connection port is used for transmitting the transmission signal transmitted through the local transmission channel when the transmission direction is detected; the radiation unit coupler is used for coupling the transmission signal transmitted by the radiation unit connecting port when detecting the transmission direction; the reference receiving unit is used for receiving the transmitting signal processed by the radiating unit coupler to obtain the receiving signal; the detection device is specifically configured to receive the received signal obtained by the reference receiving unit;
the reference transmitting unit is used for generating the transmitting signal when detecting the receiving direction; the radiation unit coupler is used for coupling the transmission signal generated by the reference transmission unit when detecting the receiving direction; the radiation unit connection port is used for receiving the transmission signal after coupling processing of the radiation unit coupler when the receiving direction is detected; the local receiving channel is used for transmitting the transmitting signal received by the connecting port of the radiation unit when detecting the receiving direction; the radiation unit connection port is used for transmitting the transmission signal transmitted through the local transmission channel when the transmission direction is detected; the reference receiving unit is specifically configured to receive the transmit signal transmitted through the local receiving channel when detecting a receiving direction, so as to obtain the receive signal; the detection device is specifically configured to receive the received signal obtained by the reference receiving unit.
15. The system according to claim 14, wherein the first channel selection module is further configured to select the channel to be detected among a plurality of receiving channels, or wherein the second channel selection module is further configured to select the channel to be detected among a plurality of transmitting channels.
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| CN201110101982.XA CN102752241B (en) | 2011-04-22 | 2011-04-22 | Method, device and system for detecting quality of channel |
| PCT/CN2012/074540 WO2012142976A1 (en) | 2011-04-22 | 2012-04-23 | Method, apparatus and system for detecting channel quality |
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| CN201110101982.XA CN102752241B (en) | 2011-04-22 | 2011-04-22 | Method, device and system for detecting quality of channel |
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| CN106911400B (en) * | 2017-02-08 | 2021-08-27 | 广州新拓慧电子科技有限公司 | Intermodulation processing device and intermodulation processing method |
| CN107171747A (en) * | 2017-07-17 | 2017-09-15 | 广东欧珀移动通信有限公司 | Receiving path diagnostic device, method and system, mobile terminal and storage medium |
| CN113271231B (en) * | 2020-02-14 | 2023-01-13 | 华为技术有限公司 | Detection device, detection method and processor |
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| CN1301417A (en) * | 1998-05-18 | 2001-06-27 | 奥根公司 | Antenna device comprising feeding means and a hand-held radio communication device for such antenna device |
| CN101155394A (en) * | 2006-09-26 | 2008-04-02 | 北京信威通信技术股份有限公司 | Method for channel transmission resource self-adapting allocation in radio communication system |
| US20090092179A1 (en) * | 2007-10-03 | 2009-04-09 | Chi-Tung Chang | Method and a circuit for estimating the signal quality of a communication channel and a wireless receiving apparatus using the same |
| CN101800728A (en) * | 2010-03-08 | 2010-08-11 | 马红梅 | OFDM (Orthogonal Frequency Division Multiplexing) related coefficient signal-to-noise ratio estimation algorithm |
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| US20090180455A1 (en) * | 2008-01-15 | 2009-07-16 | Mukundan Ranganathan | Method and system for cqi based adaptive diagonal loading for dmi-eq in hsdpa receivers |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1301417A (en) * | 1998-05-18 | 2001-06-27 | 奥根公司 | Antenna device comprising feeding means and a hand-held radio communication device for such antenna device |
| CN101155394A (en) * | 2006-09-26 | 2008-04-02 | 北京信威通信技术股份有限公司 | Method for channel transmission resource self-adapting allocation in radio communication system |
| US20090092179A1 (en) * | 2007-10-03 | 2009-04-09 | Chi-Tung Chang | Method and a circuit for estimating the signal quality of a communication channel and a wireless receiving apparatus using the same |
| CN101800728A (en) * | 2010-03-08 | 2010-08-11 | 马红梅 | OFDM (Orthogonal Frequency Division Multiplexing) related coefficient signal-to-noise ratio estimation algorithm |
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