CN104618043B - Receiver signal method for evaluating quality and device - Google Patents
Receiver signal method for evaluating quality and device Download PDFInfo
- Publication number
- CN104618043B CN104618043B CN201410808819.0A CN201410808819A CN104618043B CN 104618043 B CN104618043 B CN 104618043B CN 201410808819 A CN201410808819 A CN 201410808819A CN 104618043 B CN104618043 B CN 104618043B
- Authority
- CN
- China
- Prior art keywords
- signal
- power
- instantaneous power
- multiplier
- adder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000003111 delayed effect Effects 0.000 claims 2
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 13
- 238000013441 quality evaluation Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Noise Elimination (AREA)
Abstract
The present invention provides a kind of receiver signal method for evaluating quality and device, this method comprises: receiving signal by obtaining, wherein the reception signal is the format conversion signal of time-domain signal or time-domain signal；Then, signal will be received by bandpass filter, obtain pilot signal；Then, according to pilot signal, the signal quality for receiving signal is determined.The signal quality obtained in frequency domain is realized, so as to accurately reflect signal quality information.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method and an apparatus for evaluating signal quality of a receiver.
Background
In the development of modern communication, while the usage rate of wireless receiving devices of digital systems is increasing, FM receivers (commonly called radios) of analog Frequency Modulation (FM) systems are also popular and often found in mobile phones and other electronic handheld devices (such as MP3 players).
In the prior art, FM receivers require that the output signal of the receiver be determined based on the signal quality of the received signal. For example, in order to improve the reception sensitivity, in a case where it is determined that the signal quality of the received signal is poor, the FM receiver generally outputs a mono signal instead of a stereo signal; when it is determined that the signal quality of the received signal is good, the receiver generally outputs a stereo signal.
However, in the case of the FM broadcasting system, the information data is transmitted in the time domain by the frequency modulation system, that is, the signal quality of the received signal is obtained in the time domain, and the signal quality information cannot be accurately reflected.
Disclosure of Invention
The invention provides a method and a device for evaluating signal quality of a receiver, which are used for solving the problem that signal quality information cannot be accurately reflected.
A first aspect of the present invention provides a receiver signal quality evaluation method, including:
acquiring a receiving signal, wherein the receiving signal is a time domain signal or a format conversion signal of the time domain signal;
passing the received signal through a band-pass filter to obtain a pilot signal;
determining a signal quality of the received signal based on the pilot signal.
Optionally, the signal quality is a signal-to-noise ratio.
Optionally, the determining the signal quality of the received signal according to the pilot signal includes:
dividing the pilot signal into two paths of signals, wherein the two paths of signals comprise a first path of signal and a second path of signal;
the first path of signal passes through a first power calculator to obtain pilot signal power;
the second path of signal passes through a wave trap and a second power calculator to obtain signal noise power;
and the pilot signal power and the signal noise power are processed by a signal-to-noise ratio calculator to obtain the signal-to-noise ratio.
Optionally, the first power calculator includes: the device comprises a first squarer, a first multiplier, a first adder, a second multiplier, a second adder and a first delayer;
the first path of signal is input into the multiplier through the first squarer and multiplied by a control factor F to obtain first instantaneous power, the first instantaneous power and second instantaneous power are added to obtain the pilot power, the second instantaneous power is the result of the control factor and the unit 1 input into the second adder, the obtained (1-F) factor is multiplied by the second instantaneous power passing through the first delayer, and the second instantaneous power is the previous instantaneous power of the first instantaneous power;
the second power calculator, comprising: the second squarer, the third multiplier, the third adder, the fourth multiplier, the fourth adder and the second delayer;
and inputting the second path of signal passing through the wave trap into the third multiplier through the second squarer to multiply the third multiplier by a control factor F to obtain third instantaneous power, adding the third instantaneous power and fourth instantaneous power to obtain the signal noise power, inputting the fourth instantaneous power into the fourth adder by the control factor and unit 1 to obtain a result of multiplying the (1-F) factor by the fourth instantaneous power passing through the second delayer, wherein the fourth instantaneous power is the previous instantaneous power of the third instantaneous power.
Optionally, before the step of passing the received signal through a band-pass filter to obtain a pilot signal, the method further includes:
and the received signal passes through a time domain to frequency domain converter to obtain a frequency domain signal.
Optionally, the obtaining the frequency domain signal by passing the received signal through a time domain to frequency domain converter includes:
determining the phase of the received signal according to the received signal;
and determining the differential phase of the received signal by passing the phase of the received signal through a differentiator.
A second aspect of the present invention provides a receiver signal quality evaluation apparatus, comprising:
the receiver is used for acquiring a received signal, wherein the received signal is a time domain signal or a format conversion signal of the time domain signal;
the band-pass filter is used for enabling the received signal to pass through the band-pass filter to obtain a pilot signal;
a processor for determining a signal quality of the received signal based on the pilot signal.
Optionally, the signal quality is a signal-to-noise ratio.
Optionally, the processor includes: the device comprises a wave trap, a power calculator and a signal-to-noise ratio calculator;
the processor is specifically configured to divide the pilot signal into two paths of signals, where the two paths of signals include a first path of signal and a second path of signal; the first path of signal passes through a first power calculator to obtain pilot signal power; the second path of signal passes through a wave trap and a second power calculator to obtain signal noise power; and the pilot signal power and the signal noise power are processed by a signal-to-noise ratio calculator to obtain the signal-to-noise ratio.
Optionally, the first power calculator includes: the device comprises a first squarer, a first multiplier, a first adder, a second multiplier, a second adder and a first delayer;
the first path of signal is input into the multiplier through the first squarer and multiplied by a control factor F to obtain first instantaneous power, the first instantaneous power and second instantaneous power are added to obtain the pilot power, the second instantaneous power is the result of the control factor and the unit 1 input into the second adder, the obtained (1-F) factor is multiplied by the second instantaneous power passing through the first delayer, and the second instantaneous power is the previous instantaneous power of the first instantaneous power;
the second power calculator, comprising: the second squarer, the third multiplier, the third adder, the fourth multiplier, the fourth adder and the second delayer;
and inputting the second path of signal passing through the wave trap into the third multiplier through the second squarer to multiply the third multiplier by a control factor F to obtain third instantaneous power, adding the third instantaneous power and fourth instantaneous power to obtain the signal noise power, inputting the fourth instantaneous power into the fourth adder by the control factor and unit 1 to obtain a result of multiplying the (1-F) factor by the fourth instantaneous power passing through the second delayer, wherein the fourth instantaneous power is the previous instantaneous power of the third instantaneous power.
Optionally, the method further includes: a time domain to frequency domain converter;
and the time domain to frequency domain converter is used for enabling the received signal to pass through the time domain to frequency domain converter to obtain a frequency domain signal.
Optionally, the time-to-frequency domain converter is specifically configured to determine a phase of the received signal according to the received signal; and determining the differential phase of the received signal by passing the phase of the received signal through a differentiator.
The invention provides a method and a device for evaluating the signal quality of a receiver, which are characterized in that a received signal is obtained, wherein the received signal is a time domain signal or a format conversion signal of the time domain signal; then, the received signal passes through a band-pass filter to obtain a pilot signal; then, the signal quality of the received signal is determined based on the pilot signal. The signal quality in the frequency domain is obtained, so that the signal quality information can be accurately reflected.
Drawings
FIG. 1 is a flow chart illustrating a method for estimating signal quality of a receiver according to an embodiment of the present invention;
FIG. 2 is a flow chart illustrating a method for estimating signal quality of a receiver according to another embodiment of the present invention;
FIG. 3 is a signal flow diagram illustrating a signal quality estimation method of a receiver according to another embodiment of the present invention;
FIG. 4 is a graph of the amplitude-frequency response of a channel filter according to an embodiment of the signal quality estimation method of the receiver of the present invention;
FIG. 5 is a graph of the amplitude-frequency response of a band-pass filter according to an embodiment of the signal quality estimation method of the receiver of the present invention;
FIG. 6 is a graph of the amplitude-frequency response of a wave trap according to an embodiment of the signal quality evaluation method of the receiver of the present invention;
FIG. 7 is a schematic diagram of a first power calculator according to an embodiment of the signal quality estimation method of the receiver of the present invention;
FIG. 8 is a diagram illustrating the effect of the signal quality estimation method of the receiver according to the present invention;
FIG. 9 is a schematic diagram of an embodiment of a receiver signal quality estimation apparatus according to the present invention;
fig. 10 is a schematic structural diagram of another embodiment of the receiver signal quality estimation apparatus according to 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.
The method for evaluating the signal quality of the receiver provided by the embodiment of the invention can be applied to the condition that the FM receiver needs to determine the output signal of the receiver according to the signal quality of the received signal. The receiver signal quality evaluation apparatus provided by the present embodiment can be implemented in software and/or hardware. The following describes the method and apparatus for estimating the signal quality of a receiver according to the present embodiment in detail.
Fig. 1 is a schematic flow chart of an embodiment of a receiver signal quality estimation method according to the present invention, as shown in fig. 1, an implementation subject of the embodiment may be a receiver signal quality estimation apparatus, and the receiver signal quality estimation method includes:
step 101, acquiring a received signal.
In this embodiment, the received signal is a time domain signal or a format conversion signal of the time domain signal.
Step 102, the received signal is passed through a band-pass filter to obtain a pilot signal.
For example, after the received signal is processed by a band pass filter, a pilot signal of 19KHz can be obtained.
Step 103, determining the signal quality of the received signal according to the pilot signal.
It should be noted that the Signal quality in this embodiment may be a Received Signal Strength Indicator (RSSI) factor or a Signal-to-Noise Ratio (SNR) of the received Signal, and the specific Signal quality is not limited herein.
For example, the pilot signal is divided into two pilot signals, where the two pilot signals may include a first pilot signal and a second pilot signal; then, the first path of signal passes through a first power calculator to obtain the power of a pilot signal; meanwhile, the second path of signal passes through a wave trap and a second power calculator to obtain signal noise power; and the pilot signal power and the signal noise power are processed by a signal-to-noise ratio calculator to obtain the signal-to-noise ratio.
In this embodiment, a received signal is obtained, where the received signal is a time domain signal or a format conversion signal of the time domain signal; then, the received signal passes through a band-pass filter to obtain a pilot signal; then, the signal quality of the received signal is determined based on the pilot signal. The signal quality in the frequency domain is obtained, so that the signal quality information can be accurately reflected.
Fig. 2 is a schematic flow chart of another embodiment of the receiver signal quality estimation method of the present invention, fig. 3 is a schematic signal flow diagram of another embodiment of the receiver signal quality estimation method of the present invention, fig. 4 is an amplitude-frequency response diagram of a channel filter of one embodiment of the receiver signal quality estimation method of the present invention, fig. 5 is an amplitude-frequency response diagram of a band-pass filter of one embodiment of the receiver signal quality estimation method of the present invention, fig. 6 is an amplitude-frequency response diagram of a notch filter of one embodiment of the receiver signal quality estimation method of the present invention, fig. 7 is a schematic structural diagram of a first power calculator of one embodiment of the receiver signal quality estimation method of the present invention, as shown in fig. 2 and fig. 3, the receiver signal quality estimation method may be implemented by a receiver signal quality estimation apparatus, and may specifically include:
step 201, acquiring a received signal.
In this embodiment, the received signal is a time domain signal, for example, the received signal includes: a time domain I sample signal and a time domain Q sample signal.
Step 202, the received signal is passed through a channel filter to obtain a received signal with out-of-band interference removed.
For example, the channel filter may be a low pass filter having a passband of 75KHz, as shown in fig. 4.
Step 203, the received signal is passed through a time domain to frequency domain converter to obtain a frequency domain signal.
For example, the phase of the received signal is determined based on the received signal, and then the differential phase of the received signal is determined by passing the phase of the received signal through a differentiator.
Step 204, the received signal is passed through a band-pass filter to obtain a pilot signal.
As shown in fig. 5, the center frequency of the band pass filter is 19KHz, and the band pass filter can filter out the pilot signal without filtering out partial components of the left and right channel sum signal (L + R) and the left and right channel difference signal (L-R).
Step 205, the pilot signal is divided into two signals.
In this embodiment, the two pilot signals may include a first signal and a second signal.
Step 206, passing the first path of signal through a first power calculator to obtain pilot signal power;
in this embodiment, the power calculator is shown in fig. 7, and the first power calculator includes: the device comprises a first squarer, a first multiplier, a first adder, a second multiplier, a second adder and a first delayer; the first path of signal is input into the multiplier through the first squarer and multiplied by a control factor F to obtain first instantaneous power, the first instantaneous power and second instantaneous power are added to obtain pilot power, the second instantaneous power is the result of multiplying the control factor and the second instantaneous power which passes through the first delayer, the obtained (1-F) factor and the second instantaneous power which passes through the first delayer are input into the second adder, and the second instantaneous power is the previous instantaneous power of the first instantaneous power; the control factor F is set by a register, and the unit of the control factor is 0< F <1, and the control factor determines the convergence rate and calculation accuracy of the power calculation of the power calculator.
And step 207, passing the second path of signal through a wave trap and a power calculator to obtain signal noise power.
A second power calculator comprising: the second squarer, the third multiplier, the third adder, the fourth multiplier, the fourth adder and the second delayer;
and inputting the second path of signal passing through the wave trap into the third multiplier through the second squarer to multiply the third multiplier by a control factor F to obtain third instantaneous power, adding the third instantaneous power and fourth instantaneous power to obtain the signal noise power, inputting the fourth instantaneous power into the fourth adder by the control factor and unit 1 to obtain a result of multiplying the (1-F) factor by the fourth instantaneous power passing through the second delayer, wherein the fourth instantaneous power is the previous instantaneous power of the third instantaneous power.
The power calculator in this embodiment is similar to the power calculator shown in fig. 7 in structure and operation principle, and is not described herein again.
In this embodiment, the amplitude frequency response of the trap is as shown in FIG. 6, in order to filter out the 19KHz pilot.
And step 208, the pilot signal power and the signal noise power are processed by a signal-to-noise ratio calculator to obtain a signal-to-noise ratio.
In the present embodiment, the SNR is obtained according to the following formula, that is, SNR is 10 × log10 (S/N); wherein,
s is the pilot signal power and N is the pilot signal noise power.
Optionally, the SNR output from the SNR calculator may be input to a noise ratio modifier for obtaining a modified SNR.
It should be noted that, in this embodiment, since the SNR calculation result is more accurate, or the difference between the actual SNR and the SNR is more constant, the SNR corrector is not provided in this embodiment.
It should be noted that, the Signal quality in this embodiment may be a Received Signal Strength Indicator (RSSI) factor or a Signal-to-Noise Ratio (SNR) of the received Signal, and the specific Signal quality is not limited herein.
Fig. 8 is a schematic diagram illustrating the effect of the receiver signal quality estimation method of the present invention, and as shown in fig. 8, the FM receiver uses the receiver signal quality estimation method of the present invention, wherein the abscissa is the actual system signal-to-noise ratio, and the ordinate is the frequency domain signal-to-noise ratio estimation value. Therefore, the estimated signal-to-noise ratio of the frequency domain has small fluctuation and is accurate.
In the embodiment, the signal quality in the frequency domain is obtained, so that the signal quality information can be accurately reflected.
Fig. 9 is a schematic structural diagram of an embodiment of a receiver signal quality estimation apparatus according to the present invention, as shown in fig. 9, the receiver signal quality estimation apparatus includes: a receiver 91, a band pass filter 92 and a processor 93; the receiver 91 is configured to obtain a received signal, where the received signal is a time domain signal or a format conversion signal of the time domain signal; a band-pass filter 92, configured to pass the received signal through the band-pass filter to obtain a pilot signal; a processor 93 for determining a signal quality of the received signal based on the pilot signal.
In this embodiment, a received signal is obtained, where the received signal is a time domain signal or a format conversion signal of the time domain signal; then, the received signal passes through a band-pass filter to obtain a pilot signal; then, the signal quality of the received signal is determined based on the pilot signal. The signal quality in the frequency domain is obtained, so that the signal quality information can be accurately reflected.
Optionally, the signal quality in this embodiment is a signal-to-noise ratio.
A processor 93 comprising: the device comprises a wave trap, a power calculator and a signal-to-noise ratio calculator;
the processor is specifically configured to divide the pilot signal into two paths of signals, where the two paths of signals include a first path of signal and a second path of signal; the first path of signal passes through a first power calculator to obtain pilot signal power; the second path of signal passes through a wave trap and a second power calculator to obtain signal noise power; and the pilot signal power and the signal noise power are processed by a signal-to-noise ratio calculator to obtain the signal-to-noise ratio.
Optionally, the first power calculator includes: the device comprises a first squarer, a first multiplier, a first adder, a second multiplier, a second adder and a first delayer;
the first path of signal is input into the multiplier through the first squarer and multiplied by a control factor F to obtain first instantaneous power, the first instantaneous power and second instantaneous power are added to obtain pilot power, the second instantaneous power is the result of multiplying the control factor and the second instantaneous power which passes through the first delayer, the obtained (1-F) factor and the second instantaneous power which passes through the first delayer are input into the second adder, and the second instantaneous power is the previous instantaneous power of the first instantaneous power; a second power calculator comprising: the second squarer, the third multiplier, the third adder, the fourth multiplier, the fourth adder and the second delayer;
and inputting the second path of signal passing through the wave trap into the third multiplier through the second squarer to multiply the third multiplier by a control factor F to obtain third instantaneous power, adding the third instantaneous power and fourth instantaneous power to obtain the signal noise power, inputting the fourth instantaneous power into the fourth adder by the control factor and unit 1 to obtain a result of multiplying the (1-F) factor by the fourth instantaneous power passing through the second delayer, wherein the fourth instantaneous power is the previous instantaneous power of the third instantaneous power.
Fig. 10 is a schematic structural diagram of another embodiment of the receiver signal quality evaluation apparatus according to the present invention, as shown in fig. 10, on the basis of the foregoing embodiment, the apparatus may further include: a time-to-frequency domain converter 94;
the time-domain to frequency-domain converter 94 is configured to pass the received signal through the time-domain to frequency-domain converter to obtain a frequency-domain signal.
Optionally, the time-to-frequency domain converter 94 is specifically configured to determine a phase of the received signal according to the received signal; and determining the differential phase of the received signal by passing the phase of the received signal through a differentiator.
In the embodiment, the signal quality in the frequency domain is obtained, so that the signal quality information can be accurately reflected.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; 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 embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. A method for receiver signal quality estimation, comprising:
acquiring a receiving signal, wherein the receiving signal is a time domain signal;
the received signal passes through a time domain to frequency domain converter to obtain a frequency domain signal;
passing the frequency domain signal through a band-pass filter to obtain a pilot signal;
dividing the pilot signal into two paths of signals, wherein the two paths of signals comprise a first path of signal and a second path of signal;
the first path of signal passes through a first power calculator to obtain pilot signal power;
the second path of signal passes through a wave trap and a second power calculator to obtain signal noise power;
the pilot signal power and the signal noise power are processed by a signal-to-noise ratio calculator to obtain the signal-to-noise ratio of the received signal;
and inputting the signal-to-noise ratio into a signal-to-noise ratio corrector to obtain the signal-to-noise ratio of the corrected receiving signal.
2. The method of claim 1, wherein the first power calculator comprises: the device comprises a first squarer, a first multiplier, a first adder, a second multiplier, a second adder and a first delayer;
the first path of signal is input into the first multiplier through the first squarer and multiplied by a control factor F to obtain first instantaneous power, and the first instantaneous power and the second instantaneous power are added through the first adder to obtain the pilot frequency power; wherein the second instantaneous power is a result of multiplying the control factor by a (1-F) factor obtained by inputting the control factor to the second adder in a unit of 1, and by the second multiplier, the previous instantaneous power of the first instantaneous power passed through the first delayer;
the second power calculator, comprising: the second squarer, the third multiplier, the third adder, the fourth multiplier, the fourth adder and the second delayer;
inputting the second path of signal of the wave trap into the third multiplier through the second squarer to multiply the third multiplier by a control factor F to obtain third instantaneous power, and adding the third instantaneous power and the fourth instantaneous power through the third adder to obtain the signal noise power; wherein the fourth instantaneous power is a result of multiplying the control factor by a (1-F) factor obtained by inputting the control factor to the fourth adder at a unit of 1 and by the fourth multiplier with a previous instantaneous power of the third instantaneous power by the second delayer.
3. The method of claim 1, wherein the passing the received signal through a time-to-frequency domain converter to obtain a frequency domain signal comprises:
determining the phase of the received signal according to the received signal;
and determining the differential phase of the received signal by passing the phase of the received signal through a differentiator.
4. An apparatus for receiver signal quality estimation, comprising:
the receiver is used for acquiring a received signal, wherein the received signal is a time domain signal;
the time domain to frequency domain converter is used for enabling the received signal to pass through the time domain to frequency domain converter to obtain a frequency domain signal;
the band-pass filter is used for enabling the frequency domain signal to pass through the band-pass filter to obtain two paths of pilot signals, and the band-pass filter comprises: a first path of signal and a second path of signal;
the first power calculator is used for obtaining the pilot signal power according to the first path of signal;
a wave trap;
the second power calculator is used for obtaining signal noise power according to the second path of signal after passing through the wave trap;
a signal-to-noise ratio calculator for determining a signal-to-noise ratio of the received signal according to the pilot signal power and the signal noise power;
and the signal-to-noise ratio corrector is used for correcting the signal-to-noise ratio output by the signal-to-noise ratio calculator to obtain the signal-to-noise ratio of the corrected receiving signal.
5. The apparatus of claim 4, wherein the first power calculator comprises: the device comprises a first squarer, a first multiplier, a first adder, a second multiplier, a second adder and a first delayer;
the first path of signal is input into the first multiplier through the first squarer and multiplied by a control factor F to obtain first instantaneous power, and the first instantaneous power and the second instantaneous power are added through the first adder to obtain the pilot frequency power; wherein the second instantaneous power is a result of multiplying the control factor by the second multiplier with a previous instantaneous power of the (1-F) factor obtained by inputting the control factor to the second adder in a unit of 1 and the first instantaneous power delayed by the first delayer;
the second power calculator, comprising: the second squarer, the third multiplier, the third adder, the fourth multiplier, the fourth adder and the second delayer;
inputting the second path of signal of the wave trap into the third multiplier through the second squarer to multiply the third multiplier by a control factor F to obtain third instantaneous power, and adding the third instantaneous power and the fourth instantaneous power through the third adder to obtain the signal noise power; wherein the fourth instantaneous power is a result of multiplying the control factor and a previous instantaneous power of the (1-F) factor obtained by inputting the unit 1 to the fourth adder and the third instantaneous power delayed by the second delayer by a fourth multiplier.
6. The apparatus of claim 4, wherein the time-to-frequency domain converter is specifically configured to determine a phase of the received signal according to the received signal; and determining the differential phase of the received signal by passing the phase of the received signal through a differentiator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410808819.0A CN104618043B (en) | 2014-12-22 | 2014-12-22 | Receiver signal method for evaluating quality and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410808819.0A CN104618043B (en) | 2014-12-22 | 2014-12-22 | Receiver signal method for evaluating quality and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104618043A CN104618043A (en) | 2015-05-13 |
| CN104618043B true CN104618043B (en) | 2018-12-21 |
Family
ID=53152350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410808819.0A Expired - Fee Related CN104618043B (en) | 2014-12-22 | 2014-12-22 | Receiver signal method for evaluating quality and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104618043B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108540239A (en) * | 2018-01-05 | 2018-09-14 | 中国传媒大学广州研究院 | A kind of broadcast transmitter signal-to-noise ratio index measurement method and device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1264969A (en) * | 2000-03-11 | 2000-08-30 | 深圳市中兴通讯股份有限公司 | Method and device based on inserting frequency pilot sign for evaluating SS/N ratio of communication system |
| CN1349319A (en) * | 2000-10-13 | 2002-05-15 | 深圳市中兴通讯股份有限公司 | SIR estimating method and device for WCDMA system |
| CN1373574A (en) * | 2001-10-22 | 2002-10-09 | 信息产业部电信传输研究所 | SIR measuring method and device for WCDMA downlink (forward) link |
| CN1471338A (en) * | 2002-07-22 | 2004-01-28 | 深圳市中兴通讯股份有限公司 | Method and apparatus for measuring signal interference ratio |
| CN102223152A (en) * | 2010-04-13 | 2011-10-19 | 新港传播媒介公司 | Pilot based adaptation for FM radio receiver |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1284542A1 (en) * | 2001-08-12 | 2003-02-19 | Semiconductor Ideas to The Market BV | Stereodecoder |
| CN102355620A (en) * | 2011-06-09 | 2012-02-15 | 周意春 | Method for realizing automatic debugging of wireless microphone and automatic debugging system |
| US9130643B2 (en) * | 2012-01-31 | 2015-09-08 | Broadcom Corporation | Systems and methods for enhancing audio quality of FM receivers |
| CN103685096B (en) * | 2013-12-23 | 2017-01-04 | 中山大学花都产业科技研究院 | A kind of MIMO-OFDM system channel estimation method based on optimal pilot |
-
2014
- 2014-12-22 CN CN201410808819.0A patent/CN104618043B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1264969A (en) * | 2000-03-11 | 2000-08-30 | 深圳市中兴通讯股份有限公司 | Method and device based on inserting frequency pilot sign for evaluating SS/N ratio of communication system |
| CN1349319A (en) * | 2000-10-13 | 2002-05-15 | 深圳市中兴通讯股份有限公司 | SIR estimating method and device for WCDMA system |
| CN1373574A (en) * | 2001-10-22 | 2002-10-09 | 信息产业部电信传输研究所 | SIR measuring method and device for WCDMA downlink (forward) link |
| CN1471338A (en) * | 2002-07-22 | 2004-01-28 | 深圳市中兴通讯股份有限公司 | Method and apparatus for measuring signal interference ratio |
| CN102223152A (en) * | 2010-04-13 | 2011-10-19 | 新港传播媒介公司 | Pilot based adaptation for FM radio receiver |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104618043A (en) | 2015-05-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8095095B2 (en) | Band switch control apparatus for intermediate frequency filter | |
| CN110224721B (en) | Method and receiver for processing an analog signal from a transmission channel | |
| CN105791179B (en) | Sampling frequency offset compensation device and method | |
| CN109565342B (en) | For hybrid HD RADIOTMTime alignment measurement of technology | |
| CN104601259A (en) | Wireless communication receiver with i/q imbalance estimation and correction techniques | |
| US20100246635A1 (en) | Methods and apparatus for narrow band interference detection and suppression in ultra-wideband systems | |
| CN104639190B (en) | The AFE(analog front end) system and its processing method of a kind of FM receiver | |
| CN103368589A (en) | Interference inhibition method, interference inhibition device and receiver | |
| US20130044842A1 (en) | Radio-frequency front ends with automatic gain control | |
| US10256856B2 (en) | Radio receiver, method of detecting an obtruding signal in the radio receiver, and computer program | |
| JP2014204300A (en) | Interference wave suppression receiver | |
| US10440720B2 (en) | Co-channel interference cancellation method and apparatus | |
| US9001877B2 (en) | Signal processing for diversity combining radio receiver | |
| CN104618043B (en) | Receiver signal method for evaluating quality and device | |
| EP3000182B1 (en) | Method and circuit for signal quality estimation and control | |
| CN112054885A (en) | Method and device for determining calibration information | |
| CN101882938B (en) | Receiving apparatus | |
| KR102156211B1 (en) | Method for searching for a useful signal in a multiplexing band | |
| JP6650580B2 (en) | CN ratio detection circuit and reception circuit | |
| JP2012147276A (en) | Receiving apparatus and impulse noise removal method | |
| EP1909400B1 (en) | Detection and suppression of adjacent channel interference in a received signal through the use of the Teager-Kaiser function | |
| CN110310661B (en) | Method for calculating two-path real-time broadcast audio time delay and similarity | |
| CN104539252B (en) | Realize the method, apparatus and equipment of cic filter zero gain | |
| US20160087661A1 (en) | Radio Receiver | |
| JP2006319815A (en) | Pulse noise canceler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190402 Address after: 266100 No. 1, Keyuan Wei Road, Laoshan District, Qingdao City, Shandong Province Patentee after: Datang Semiconductor Technology Co.,Ltd. Address before: 100094 No. 6 Yongjia North Road, Beijing, Haidian District Patentee before: DATANG SEMICONDUCTOR DESIGN Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20150513 Assignee: Meitang Zhilian Health Technology (Jiangsu) Co.,Ltd. Assignor: Datang Semiconductor Technology Co.,Ltd. Contract record no.: X2020990000420 Denomination of invention: Receiver signal quality evaluation method and device Granted publication date: 20181221 License type: Common License Record date: 20200818 |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181221 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |