CN102195681A - Demodulation signal gain control method and device and microcontroller - Google Patents
Demodulation signal gain control method and device and microcontroller Download PDFInfo
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- H—ELECTRICITY
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- H04B3/00—Line transmission systems
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- H—ELECTRICITY
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- H03G—CONTROL OF AMPLIFICATION
- H03G1/00—Details of arrangements for controlling amplification
- H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
- H03G1/0088—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using discontinuously variable devices, e.g. switch-operated
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
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Abstract
The invention provides a demodulation signal gain control method and device and a microcontroller. The gain control method comprises the following steps of: acquiring the effective value of a demodulation signal in power line carrier communication; selecting one preset gain adjustment value from more than two preset gain adjustment values as an actual gain adjustment value according to a difference value between the effective value of the demodulation signal and a preset signal energy reference value, and generating a gain control signal according to the actual gain adjustment value; and sending the generated gain control signal to a gain amplifier so as to amplify or attenuate the demodulation signal. The invention also provides a corresponding device and a microcontroller equipped with the device. The demodulation signal gain control method and device and the microcontroller provided by the invention are adapted to the nonlinear time varying feature of channels in power line carrier communication, thereby realizing the accurate adjustment of demodulation signals in the power line carrier communication.
Description
Technical field
The present invention relates to the power line carrier communication field, relate in particular to a kind of gain control method, device and microcontroller of restituted signal.
Background technology
Power line carrier communication (Power Line Carrier Communication; Hereinafter to be referred as: PLC) be meant with the power line to be information transmitting medium, signal is implemented in a kind of communication mode that transmits between each node of electrical network through the carrier modulation technology.PLC has a wide range of applications at aspects such as remote meter reading, intelligent appliance monitoring.
Power line is as the transmission medium of carrier signal, has strong noise, decay is big, in time, become and characteristics such as non-linear, make that the demodulation of carrier signal is very difficult, need suitable prime analog circuit and rear end digital processing realization demodulation be set in the demodulation prime, above-mentioned prime analog circuit comprises amplifier, filter, circuit elements such as ADC, the foregoing circuit element all has certain scope of application under semiconductor technology, and in the power line carrier communication, the carrier signal changes in amplitude is bigger, must adjust i.e. real-time gain adjustment to the signal amplitude that receiver receives.Automatic gain control of the prior art is a kind of auto gain control method of realizing by analog circuit, be that gain control circuit is provided with multiplication factor automatic gain control amplifier is controlled automatically, utilize negative-feedback principle, amplitude to output signal is sampled, obtain a control voltage, the multiplication factor of removing oppositely to regulate automatic gain control amplifier.
In realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art: the multiplication factor of regulating automatic gain control amplifier in the prior art by the analog circuit form, its control precision is low, and it is big to carry out the circuit design difficulty of automatic gain control with the analog circuit form.
Summary of the invention
The invention provides a kind of gain control method, device and microcontroller of restituted signal, the control precision when the restituted signal in the power line carrier communication being carried out automatic gain control in order to raising.
The invention provides a kind of gain control method of restituted signal, comprising:
Obtain the effective value of restituted signal in the power line carrier communication;
According to the effective value of described restituted signal and the difference of preset signals energy reference value, from plural default gain adjustment value, select one of them as the actual gain adjusted value, and generate gain control signal according to described actual gain adjusted value;
The gain control signal of described generation is sent to gain amplifier described restituted signal is amplified or decay.
The present invention also provides a kind of gain control of restituted signal, comprising:
The energy acquisition module is used for obtaining the effective value of power line carrier communication restituted signal;
Gain control module, be used for according to the effective value of described restituted signal and the difference of preset signals energy reference value, from plural default gain adjustment value, select one of them as the actual gain adjusted value, and generate gain control signal according to described actual gain adjusted value;
Gain amplifier is used for gain control signal according to described generation and described restituted signal is amplified or decays.
The present invention also provides a kind of microcontroller, the gain control that comprises CPU, power line carrier communication receiving system and above-mentioned restituted signal, the gain control of described restituted signal is used for the restituted signal that the power line carrier communication receiving system is handled is carried out gain controlling, and described CPU is used for described power line carrier communication receiving system is controlled.
The gain control method of restituted signal provided by the invention, device and microcontroller, by setting in advance plural gain adjustment value, when carrying out gain controlling, can select suitable gain adjustment value as the actual gain adjusted value according to different situations, there are the characteristics of nonlinear time-varying in channel in the time of can adapting to power line carrier communication, realizes the accurate adjustment to restituted signal gain in the power line carrier communication.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of the gain control method embodiment of restituted signal of the present invention;
Fig. 2 is the structural representation of the gain control embodiment of restituted signal of the present invention;
Fig. 3 is the structural representation of microcontroller embodiment of the present invention;
Fig. 4 is the device schematic diagram of a specific embodiment of microcontroller of the present invention.
Embodiment
The embodiment of the invention provides a kind of gain control method that is applicable to restituted signal in the power line carrier communication, and Fig. 1 is the schematic flow sheet of the gain control method embodiment of restituted signal of the present invention, and as shown in Figure 1, this method comprises:
The gain control method of the restituted signal that the above embodiment of the present invention provides, by setting in advance plural gain adjustment value, when carrying out gain controlling, can select suitable gain adjustment value as the actual gain adjusted value according to different situations, there are the characteristics of nonlinear time-varying in channel in the time of can adapting to power line carrier communication, realizes the accurate adjustment to restituted signal gain in the power line carrier communication.
On the basis of the above embodiment of the present invention, wherein from plural default gain adjustment value, select one of them can be specially by judging whether the power line communication state changes in the above-mentioned steps 102 and select different actual gain adjusted values as the actual gain adjusted value, the power line communication state changes and can comprise two kinds of situations, the one, at power line communication channel by the variation of free time to communications status, or during by the variation of the idle condition of communicating by letter, be that signal of communication grows out of nothing or the process from having to do not having, the 2nd, because noise effect, but make in communication process digital demodulator can't obtain the restituted signal of demodulation, select this moment the first default gain adjustment value as the actual gain adjusted value, but the above-mentioned first default gain adjustment value is used to make the restituted signal rapid adjustment to the demodulation scope.Do not change at the power line communication state in addition, promptly when power line communication is in stable condition, select the second default gain adjustment value as the actual gain adjusted value, but the above-mentioned second default gain adjustment value is used to make restituted signal to be in stable demodulation scope.
Above-mentioned adjustment mode when the power line communication state changes is a kind of rapid adjustment mode, is meant that signal amplifies or the bigger adjustment of attenuation multiple.Specifically be because the noise effect of channel, or channel has been when just having entered into communications status by the free time, signal amplitude changes very greatly, adopts above-mentioned rapid adjustment mode, but makes signal enter demodulation scope (for example once amplifying 18dB or the 18dB that decays) with the fastest speed.Above-mentioned adjustment mode when power line communication is in stable condition is a kind of slow-action perfect square formula, be meant that signal amplifies or the less adjustment of attenuation multiple, when less or carrier signal is in basicly stable state when the noise effect of channel, can adjust at a slow speed, but the signal (for example once amplifying 6dB or decay 6dB) to stablize demodulation.Usually in power line communication, when idle condition enters communications status, need earlier that one of transmission be used for synchronous heading, its transmission time is shorter, therefore need in the short period of message transmission head, but carrier signal be adjusted in the demodulation scope, use quick-adjustsing mode this moment; And when power line communication is in stable condition, can use the mode of adjusting at a slow speed.Promptly select the less adjustment mode of actual gain adjusted value.
In addition in the above-described embodiments, for the needs that further adapt to fast or slow gain is adjusted, can obtain the restituted signal effective value and sampled point number when calculating is controlled to the energy acquisition module, for example when the power line communication state changes, the energy acquisition module calculates to obtain the effective value of restituted signal with the first energy computational speed described restituted signal, this is a kind of the less energy of signal sampling point to be calculated, but is applicable to when the carrier signal amplitude does not also enter the amplitude of demodulation (for example calculating 128 energy value).In the power line communication process, the energy acquisition module calculates to obtain the effective value of restituted signal with the second energy computational speed described restituted signal, the sampled point number of above-mentioned sampled point number when calculating when calculating with the first energy computational speed with the second energy computational speed, this is a kind of account form of energy at a slow speed, be that the more energy of a kind of signal sampling point calculates, be applicable to when but the carrier signal amplitude enters the amplitude of demodulation (for example calculating 512 energy value), when the above-mentioned first energy computational speed is calculated and the sampled point number of the second energy computational speed when calculating for being oppositely arranged, for example can the sampled point number when calculating in concrete setting up procedure be made as 4 times of sampling number purposes when calculating with the first energy computational speed with the second energy computational speed.
From default plural gain adjustment value, select one of them can also be specially another situation in the above-mentioned steps 102 as the actual gain adjusted value, promptly comprise the steps: to select to satisfy the maximum in the default gain adjustment value of regularization condition as the actual gain adjusted value, and the maximum in the described default gain adjustment value is the amplitude limit adjusted value according to the difference of the effective value of described restituted signal and preset signals energy reference value.This is the gain adjustment mode of a kind of staged and amplitude limit formula, can improve the efficient of energy comparison and gain controlling on the one hand, can avoid the amplitude of the amplification of signal or decay excessive on the other hand, for example can set in advance three gain adjustment value of 6dB, 12dB and 18dB, above-mentioned gain adjustment value comprises decay and amplifies two kinds of situations.Above-mentioned each default gain adjustment value all is an independent parallel, can be according to priority adjustment from big to small when selecting to adjust.If the signal input range is very little, satisfy and amplify 18dB, also satisfy certainly and amplify 12dB and 6dB, but because the setting of priority preferentially adopts 18dB to adjust.Adjust as for 12dB and 6dB, after can only adjusting through 18dB by the time, signal is through once amplifying, and judging whether need adjusting according to the gain adjustment value of 12dB and 6dB again.Above-mentioned amplitude limit adjustment specifically is meant if restituted signal is excessive or too small, use the amplitude limit adjusted value to adjust back (above-mentioned adjustment number of times can preestablish) in continuous several times, if still restituted signal can not be adjusted in the adjustable range, then can abandon continuing restituted signal is carried out gain controlling, for example receive a less restituted signal, still can't demodulation after using three 18dB to amplify, can think that then above-mentioned restituted signal is too small, abandon it is carried out amplifieroperation again, above-mentioned amplitude limit adjustment makes the restituted signal of input can infinitely not amplify or decay, by the mode of clamper, the signal input is controlled in the suitable scope.
In the specific embodiment of the present invention, above-mentioned preset signals energy reference value and/or plural default gain adjustment value can be to be installed in the gain control module in advance in addition.In another embodiment, can adjust it by CPU, be the step that said method further comprises the adjustment signal that receives the CPU transmission, above-mentioned adjustment signal is used for preset signals energy reference value and/or plural default gain adjustment value are adjusted in real time.
Embodiment is corresponding with said method, and the embodiment of the invention also provides a kind of gain control of restituted signal, and this device can be carried out the steps flow chart among the said method embodiment.Fig. 2 is the structural representation of the gain control embodiment of restituted signal of the present invention, as shown in Figure 2, this device comprises energy acquisition module 11, gain control module 12 and gain amplifier 13, and wherein energy acquisition module 11 is used for obtaining the effective value of power line carrier communication restituted signal; Gain control module 12 is used for the difference according to the effective value of described restituted signal and preset signals energy reference value, from plural default gain adjustment value, select one of them as the actual gain adjusted value, and generate gain control signal according to described actual gain adjusted value; Gain amplifier 13 is used for gain control signal according to described generation and described restituted signal is amplified or decays.
The gain control of the restituted signal that the above embodiment of the present invention provides, by setting in advance plural gain adjustment value, when carrying out gain controlling, can select suitable gain adjustment value as the actual gain adjusted value according to different situations, there are the characteristics of nonlinear time-varying in channel in the time of can adapting to power line carrier communication, realizes the accurate adjustment to the restituted signal gain.
In concrete implementation process, above-mentioned gain control module may further include first acquiring unit, second acquisition unit and control signal generation unit, wherein first acquiring unit is used for when the power line communication state changes, select the first default gain adjustment value as the actual gain adjusted value, but the described first default gain adjustment value is used to make the restituted signal rapid adjustment to the demodulation scope; Second acquisition unit is used for when power line communication is in stable condition, select the second default gain adjustment value as the actual gain adjusted value, but the described second default gain adjustment value is used to make restituted signal to be in stable demodulation scope, and the control signal generation unit is used for generating gain control signal according to described actual gain adjusted value.
Also has another execution mode, be that gain control module comprises gain adjustment information memory cell, adjusted value acquiring unit, the adjustment information that wherein gains memory cell is used to store default gain adjustment value more than two, and the maximum in the described default gain adjustment value is the amplitude limit adjusted value; The maximum of default gain adjustment value that the adjusted value acquiring unit is used for selecting to satisfy regularization condition according to the difference of the effective value of described restituted signal and preset signals energy reference value is as the actual gain adjusted value, and the control signal generation unit is used for generating gain control signal according to described actual gain adjusted value.
The embodiment of the invention also provides a kind of microcontroller, Fig. 3 is the structural representation of microcontroller embodiment of the present invention, as shown in Figure 3, this system comprises the gain control 3 of the restituted signal among CPU 1, power line carrier communication receiving system 2 and the above-mentioned arbitrary embodiment, the gain control of described restituted signal is used for the restituted signal that the power line carrier communication receiving system is handled is carried out gain controlling, and described CPU is used for described power line carrier communication receiving system is controlled.
The microcontroller that the above embodiment of the present invention provides, by setting in advance plural gain adjustment value, when carrying out gain controlling, can select suitable gain adjustment value as the actual gain adjusted value according to different situations, there are the characteristics of nonlinear time-varying in channel in the time of can adapting to power line carrier communication, realizes the accurate adjustment to restituted signal gain in the power line carrier communication.
In concrete implementation process, above-mentioned preset signals energy reference value and/or plural default gain adjustment value can be to be installed in advance in the gain control of restituted signal, and promptly the gain control of above-mentioned restituted signal does not need to obtain the adjustment signal that above-mentioned preset value is adjusted from CPU.In another embodiment, can further adjust above-mentioned preset value by CPU, promptly above-mentioned CPU also can be used for adjusting preset signals energy reference value and/or the plural default gain adjustment value in the gain control of restituted signal.
Fig. 4 is the device schematic diagram of a specific embodiment of microcontroller of the present invention, as shown in Figure 4, above-mentioned microcontroller comprises the gain control of CPU, power line carrier communication receiving system and restituted signal, wherein the power line carrier communication receiving system comprises low noise amplifier, path filter, analog-to-digital conversion module, digital mixer, digital filter and digital demodulator, and the gain control of power line carrier signal comprises energy acquisition module, gain control module and gain amplifier.
After the power line signal that carries communication data enters the power line coupling circuit, carrier signal with power line after carrying out Signal Separation at first is input to low noise amplifier, by this low noise amplifier analog signal is amplified, signal is input to path filter and carries out Filtering Processing then, above-mentioned path filter is the unnecessary noise of filtering effectively, reduce the difficulty of back level demodulator circuit design, concrete above-mentioned path filter can use ceramic filter.Be input in the programmable gain amplifier through the filtered carrier signal of path filter, the amplification of this gain amplifier or the multiple of decay are adjustable, amplify or decay after carrier signal advanced the carrier signal that is converted to digital form behind the analog-to-digital conversion module, the carrier signal of above-mentioned digital form can be carried out Frequency mixing processing by digital mixer, and this digital mixer is connected with CPU, and adjust the local frequency of digital mixer according to the control signal of CPU, adjust with the signal frequency that mixing is obtained, make its frequency range in the free transmission range of the digital filter of follow-up setting, improve the filter effect of digital filter, acquisition has the more carrier signal of high s/n ratio, to reduce the design difficulty of digital demodulator circuit.After the carrier signal process digital filter filtering after the above-mentioned mixing, carry out demodulation to obtain the power line carrier data by digital demodulator at last.
Wherein above-mentioned energy acquisition module is used to obtain the output energy parameter of digital demodulator, the effective value of the restituted signal that promptly obtains, and feed back to gain control module, gain control module can be obtained the actual gain adjusted value according to the method that above-mentioned each embodiment provides, and send to gain amplifier so that its according to the actual gain adjusted value to analog-to-digital conversion before restituted signal amplify or decay.In specific embodiment, the Control on Communication register can also be set, CPU is adjusted by preset signals energy reference value and/or default gain adjustment value in the Control on Communication register pair gain control.
The gain control method of the restituted signal that the above embodiment of the present invention provides, device and microcontroller, by setting in advance plural gain adjustment value, when carrying out gain controlling, can select suitable gain adjustment value as the actual gain adjusted value according to different situations, there are the characteristics of nonlinear time-varying in channel in the time of can adapting to power line carrier communication, realizes the accurate adjustment to restituted signal gain in the power line carrier communication.Can solve in concrete power line carrier communication process, there are the characteristics of nonlinear time-varying in channel, make signal attenuation big, signal to noise ratio is low, cause the big defective of demodulation difficulty, automatic gain control circuit cooperates amplifier circuit, filter circuit, makes that carrier signal can be by demodulation in suitable scope, reduce the design complexities of demodulator circuit, improve demodulation performance simultaneously.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. the gain control method of a restituted signal is characterized in that, comprising:
Obtain the effective value of restituted signal in the power line carrier communication;
According to the effective value of described restituted signal and the difference of preset signals energy reference value, from plural default gain adjustment value, select one of them as the actual gain adjusted value, and generate gain control signal according to described actual gain adjusted value;
The gain control signal of described generation is sent to gain amplifier described restituted signal is amplified or decay.
2. the gain control method of restituted signal according to claim 1 is characterized in that, describedly selects one of them to comprise as the actual gain adjusted value from plural default gain adjustment value:
When the power line communication state changes, select the first default gain adjustment value as the actual gain adjusted value, but the described first default gain adjustment value is used to make the restituted signal rapid adjustment to the demodulation scope;
When power line communication is in stable condition, select the second default gain adjustment value as the actual gain adjusted value, but the described second default gain adjustment value is used to make restituted signal to be in stable demodulation scope.
3. the gain control method of restituted signal according to claim 1 and 2 is characterized in that, describedly obtains that the effective value of restituted signal comprises in the power line carrier communication:
When the power line communication state changes, described restituted signal is calculated to obtain the effective value of described restituted signal with the first energy computational speed;
When power line communication is in stable condition, described restituted signal is calculated obtaining the effective value of described restituted signal the sampled point number of described sampled point number when calculating when calculating with the first energy computational speed with the second energy computational speed with the second energy computational speed.
4. the gain control method of restituted signal according to claim 1 is characterized in that, describedly selects one of them to comprise as the actual gain adjusted value from plural default gain adjustment value:
Select to satisfy the maximum in the default gain adjustment value of regularization condition according to the difference of the effective value of described restituted signal and preset signals energy reference value as the actual gain adjusted value, and the maximum in the described default gain adjustment value is the amplitude limit adjusted value.
5. the gain control method of restituted signal according to claim 4 is characterized in that, also comprises:
Receive the adjustment signal that CPU sends, described adjustment signal is used for described preset signals energy reference value and/or plural default gain adjustment value are adjusted.
6. the gain control of a restituted signal is characterized in that, comprising:
The energy acquisition module is used for obtaining the effective value of power line carrier communication restituted signal;
Gain control module, be used for according to the effective value of described restituted signal and the difference of preset signals energy reference value, from plural default gain adjustment value, select one of them as the actual gain adjusted value, and generate gain control signal according to described actual gain adjusted value;
Gain amplifier is used for gain control signal according to described generation and described restituted signal is amplified or decays.
7. the gain control of restituted signal according to claim 6 is characterized in that, described gain control module comprises:
First acquiring unit is used for when the power line communication state changes, and select the first default gain adjustment value as the actual gain adjusted value, but the described first default gain adjustment value is used to make the restituted signal rapid adjustment to the demodulation scope;
Second acquisition unit is used for when power line communication is in stable condition, select the second default gain adjustment value as the actual gain adjusted value, but the described second default gain adjustment value is used to make restituted signal to be in stable demodulation scope;
The control signal generation unit is used for generating gain control signal according to described actual gain adjusted value.
8. the gain control of restituted signal according to claim 6 is characterized in that, described gain control module comprises:
Gain adjustment information memory cell is used to store plural default gain adjustment value, and the maximum in the described default gain adjustment value is the amplitude limit adjusted value;
The adjusted value acquiring unit is used for selecting to satisfy the maximum of default gain adjustment value of regularization condition as the actual gain adjusted value according to the difference of the effective value of described restituted signal and preset signals energy reference value;
The control signal generation unit is used for generating gain control signal according to described actual gain adjusted value.
9. microcontroller, it is characterized in that, the gain control that comprises CPU, power line carrier communication receiving system and the arbitrary described restituted signal of claim 6-8, the gain control of described restituted signal is used for the restituted signal that the power line carrier communication receiving system is handled is carried out gain controlling, and described CPU is used for described power line carrier communication receiving system is controlled.
10. microcontroller according to claim 9 is characterized in that, described CPU is used for adjusting the gain control preset signals energy reference value and/or the plural default gain adjustment value of restituted signal.
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| CN201010123205.0A CN102195681B (en) | 2010-03-10 | 2010-03-10 | Demodulation signal gain control method and device and microcontroller |
| PCT/CN2010/073515 WO2011109967A1 (en) | 2010-03-10 | 2010-06-03 | Method, apparatus and microcontroller of demodulation signal gain control |
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| CN201010123205.0A CN102195681B (en) | 2010-03-10 | 2010-03-10 | Demodulation signal gain control method and device and microcontroller |
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| CN201310475832.4A Division CN103595445B (en) | 2010-03-10 | 2010-03-10 | Gain control method and gain control device for demodulation signals and microcontroller |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103220018A (en) * | 2013-03-19 | 2013-07-24 | 北京中宸泓昌科技有限公司 | Control method of automatic gain in power line carrier communication network |
| CN106341145A (en) * | 2015-07-07 | 2017-01-18 | 中兴通讯股份有限公司 | Signal receiving method and device |
| CN108768425A (en) * | 2018-07-02 | 2018-11-06 | 成都国恒空间技术工程有限公司 | A kind of dynamic adjusting method of automatic growth control AGC |
| CN111638669A (en) * | 2020-05-25 | 2020-09-08 | 上海海事大学 | Signal acquisition system and acquisition method for abnormal monitoring signals |
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| CN103220018A (en) * | 2013-03-19 | 2013-07-24 | 北京中宸泓昌科技有限公司 | Control method of automatic gain in power line carrier communication network |
| CN103220018B (en) * | 2013-03-19 | 2015-05-20 | 北京中宸泓昌科技有限公司 | Control method of automatic gain in power line carrier communication network |
| CN106341145A (en) * | 2015-07-07 | 2017-01-18 | 中兴通讯股份有限公司 | Signal receiving method and device |
| CN106341145B (en) * | 2015-07-07 | 2020-04-21 | 中兴通讯股份有限公司 | Signal receiving method and device |
| CN108768425A (en) * | 2018-07-02 | 2018-11-06 | 成都国恒空间技术工程有限公司 | A kind of dynamic adjusting method of automatic growth control AGC |
| CN111638669A (en) * | 2020-05-25 | 2020-09-08 | 上海海事大学 | Signal acquisition system and acquisition method for abnormal monitoring signals |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102195681B (en) | 2014-03-19 |
| WO2011109967A1 (en) | 2011-09-15 |
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Address after: 266023, a, Jia Lu, 16, Shandong, Qingdao Patentee after: Qingdao Eastsoft Communication Technology Co., Ltd. Patentee after: SHANGHAI EASTSOFT MICROELECTRONICS CO., LTD. Address before: 266023, a, Jia Lu, 16, Shandong, Qingdao Patentee before: Qingdao Eastsoft Communication Technology Co., Ltd. Patentee before: Shanghai Hair Group Integated Circuit Co., Ltd. |