CN109217953A - A kind of noise-reduction method and system based on analysis channel signal-to-noise ratio - Google Patents
A kind of noise-reduction method and system based on analysis channel signal-to-noise ratio Download PDFInfo
- Publication number
- CN109217953A CN109217953A CN201811128643.9A CN201811128643A CN109217953A CN 109217953 A CN109217953 A CN 109217953A CN 201811128643 A CN201811128643 A CN 201811128643A CN 109217953 A CN109217953 A CN 109217953A
- Authority
- CN
- China
- Prior art keywords
- signal
- noise
- noise ratio
- simulation
- analysis channel
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/391—Modelling the propagation channel
- H04B17/3912—Simulation models, e.g. distribution of spectral power density or received signal strength indicator [RSSI] for a given geographic region
Abstract
The present invention provides a kind of noise-reduction method and system based on analysis channel signal-to-noise ratio, comprising: S1, carry out SNR emulation, isolate the crosstalk components contribution amount that noise is included；S2, crosstalk definition is carried out, calculates signal-to-noise ratio；S3, setting Tx, Rx parameter, signal simulation obtain NEXT, FEXT waveform；S4, according to waveform signal numerical value, the signal line for being unsatisfactory for state of signal-to-noise is remodified.The embodiment of the present invention has redefined SNR principle of simulation, situation in need of consideration during signal simulation is included by signal simulation twice, and express signal spectrum, crosstalk frequency spectrum in the form integrated, respectively extend nybble forwards, backwards centered on peak value.By signal simulation as a result, NEXT, FEXT wave numerics are embodied out, the signal line for being unsatisfactory for signal-to-noise ratio is remodified, to realize reduction signal noise, and carries out emphasis control for the signal for being unsatisfactory for requiring.
Description
Technical field
The present invention relates to server signal technical field, especially a kind of noise-reduction method based on analysis channel signal-to-noise ratio with
System.
Background technique
Signal-to-noise ratio, English name are called SNR or S/N (SIGNAL-NOISERATIO), also known as signal to noise ratio.Refer to one
The ratio of signal and noise in electronic equipment or electronic system.
Here signal refers to the electronic signal for needing to be handled by this equipment from device external, noise
Refer to by random extra (or information) not existing in the original signal generated after the equipment, and this kind of signal
Do not change with the variation of original signal.
The target of high-speed channel design is: the case where reducing loss and distortion of the signal in transmission process occurs, that is, protects
The effective component for demonstrate,proving signal is more as far as possible, and noise section is few as far as possible.
In the prior art for the prediction of influence of noise, judged merely by experience, for evading for noise, is led to
Be often risk averse is carried out by the way of managing line-spacing, but its to evade effect often not satisfactory.
Summary of the invention
The object of the present invention is to provide a kind of noise-reduction method and system based on analysis channel signal-to-noise ratio, it is intended to solve existing
Noise reduction is realized using effect undesirable problem when control line-spacing and passed through NEXT, the FEXT's for obtaining different DQ in technology
Figure lifts discovery risk point so that selecting signal-to-noise ratio is unsatisfactory for system requirements, reduces noise.
To reach above-mentioned technical purpose, the present invention provides a kind of noise-reduction methods based on analysis channel signal-to-noise ratio, including
Following steps:
S1, SNR emulation is carried out, isolates the crosstalk components contribution amount that noise is included；
S2, crosstalk definition is carried out, calculates signal-to-noise ratio；
S3, setting Tx, Rx parameter, signal simulation obtain NEXT, FEXT waveform；
S4, according to waveform signal numerical value, the signal line for being unsatisfactory for state of signal-to-noise is remodified.
Preferably, the SNR emulation specifically:
Master network is emulated first, other networks keep silent status, measure the signal of transmitting and receiving terminal；
When emulating again, the equidirectional phase impulse emulation of other networks, master network keeps silent, measures and receive on master network
Noise content.
Preferably, the calculation formula of the signal-to-noise ratio is as follows:
Integral_sig is useful signal component, and Integral_ISI is intersymbol interference component, and Integral_xtk is
Crosstalk components, calculation formula difference are as follows:
Preferably, the setting of Tx, Rx parameter is completed by Speed2000 software.
The present invention also provides a kind of noise reduction system based on analysis channel signal-to-noise ratio, the system comprises:
SNR emulation module isolates the crosstalk components contribution amount that noise is included for carrying out SNR emulation；
Signal-to-noise ratio computation module calculates signal-to-noise ratio for carrying out crosstalk definition；
Wave simulation module, for setting Tx, Rx parameter, signal simulation obtains NEXT, FEXT waveform；
Route modified module, for according to waveform signal numerical value, the signal line for being unsatisfactory for state of signal-to-noise to be carried out weight
New modification.
Preferably, the SNR emulation module includes:
Master network simulation unit, for emulating master network, other networks keep silent status, measure the letter of transmitting and receiving terminal
Number；
Other network simulation units, for emulating to the equidirectional phase impulse of other networks, master network keeps silent, measures
Received noise content on master network.
Preferably, the calculation formula of the signal-to-noise ratio is as follows:
Integral_sig is useful signal component, and Integral_ISI is intersymbol interference component, and Integral_xtk is
Crosstalk components, calculation formula difference are as follows:
Preferably, the setting of Tx, Rx parameter is completed by Speed2000 software.
The effect provided in summary of the invention is only the effect of embodiment, rather than invents all whole effects, above-mentioned
A technical solution in technical solution have the following advantages that or the utility model has the advantages that
Compared with prior art, the present invention has redefined SNR principle of simulation, by signal simulation twice by signal simulation
Situation in need of consideration is included in the process, and signal spectrum, crosstalk frequency spectrum are expressed in the form integrated, with peak
Nybble is respectively extended centered on value forwards, backwards.By signal simulation as a result, NEXT, FEXT wave numerics are embodied out
Come, the signal line for being unsatisfactory for signal-to-noise ratio is remodified, to realize reduction signal noise, and is directed to and is unsatisfactory for requiring
Signal carry out emphasis control, solve the problems, such as it is undesirable using effect when control line-spacing for noise reduction in the prior art, it is real
Now lift discovery wind so that selecting signal-to-noise ratio is unsatisfactory for system requirements by obtaining the figure of NEXT, FEXT of different DQ
It is dangerous, reduce noise.
Detailed description of the invention
Fig. 1 is a kind of noise-reduction method flow chart based on analysis channel signal-to-noise ratio provided in the embodiment of the present invention；
Fig. 2 is a kind of SNR principle of simulation schematic diagram provided in the embodiment of the present invention；
Fig. 3 is signal simulation schematic diagram provided in the embodiment of the present invention；
Fig. 4 is a kind of noise reduction system structural block diagram based on analysis channel signal-to-noise ratio provided in the embodiment of the present invention.
Specific embodiment
In order to clearly illustrate the technical characterstic of this programme, below by specific embodiment, and its attached drawing is combined, to this
Invention is described in detail.Following disclosure provides many different embodiments or example is used to realize different knots of the invention
Structure.In order to simplify disclosure of the invention, hereinafter the component of specific examples and setting are described.In addition, the present invention can be with
Repeat reference numerals and/or letter in different examples.This repetition is that for purposes of simplicity and clarity, itself is not indicated
Relationship between various embodiments and/or setting is discussed.It should be noted that illustrated component is not necessarily to scale in the accompanying drawings
It draws.Present invention omits the descriptions to known assemblies and treatment technology and process to avoid the present invention is unnecessarily limiting.
Be provided for the embodiments of the invention with reference to the accompanying drawing a kind of noise-reduction method based on analysis channel signal-to-noise ratio with
System is described in detail.
As shown in Figure 1, the embodiment of the invention discloses a kind of noise-reduction method based on analysis channel signal-to-noise ratio, including it is following
Step:
S1, SNR emulation is carried out, isolates the crosstalk components contribution amount that noise is included；
S2, crosstalk definition is carried out, calculates signal-to-noise ratio；
S3, setting Tx, Rx parameter, signal simulation obtain NEXT, FEXT waveform；
S4, according to waveform signal numerical value, the signal line for being unsatisfactory for state of signal-to-noise is remodified.
Fig. 2 is SNR principle of simulation used by the embodiment of the present invention, and in SNR emulation, it is same to define many differential pairs
When emulate, the crosstalk components contribution amount that noise is included can be isolated in this way.
The emulation makes two bites at a cherry, and emulation master network, other networks keep silent status, measure transmitting and receiving terminal first
Signal, when emulating again, the equidirectional phase impulse emulation of other networks, master network keeps silent, measures received on master network
Noise content.
Crosstalk between intersymbol interference, high-speed line is defined as follows:
Calculate useful signal component:
Calculate intersymbol interference component:
Crosstalk components are calculated again:
The calculation formula for the signal component that receiving end receives is as follows:
SN_difference=Integral_sig-Integral_ISI-Integral_xtk
The calculation formula of signal-to-noise ratio is as follows
Integrated form will be defined as between signal, intersymbol interference, high-speed line, this form of Definition is high by entire high-speed channel
Rapid pulse rushes in capable emulation, and the spectrum component of pulse covers direct current to cutoff frequency, the pulse received is carried out a bit
Screening, each extension half-bit position forwards, backwards centered on peak value calculates the inside and outside signal of the bit area that includes, exists
Part in bit window is considered as useful signal, and the area value diffused to outside bit bit wide is considered as noise, the two
Between ratio be signal-to-noise ratio.
The circuit signal emulated will be needed to set Tx component, Rx component using Speed2000 software, determines electricity
Source-ground network, and the selected signal for needing to emulate well, set the parameter of Tx, Rx component, then carry out the emulation of signal, imitate
True result is as shown in Figure 3.
Lighter curve indicates to assume that other signals of the end Tx are all obtained Tx waveform, darker curve under static position in figure
It indicates to assume that other signals of the end Rx are all obtained Rx waveforms under static position.And it respectively obtains and assumes other signals of the end Tx all
Be the NEXT waveform obtained under static position and assume other signals of the end Rx be all obtained FEXT waveform under static position.
After obtaining specific signal numerical value, the signal line for being unsatisfactory for state of signal-to-noise is remodified, until
Meet signal-to-noise ratio.
The embodiment of the present invention has redefined SNR principle of simulation, will be needed during signal simulation by signal simulation twice
The case where considering is included, and signal spectrum, crosstalk frequency spectrum are expressed in the form integrated, centered on peak value
Nybble is respectively extended forwards, backwards.By signal simulation as a result, NEXT, FEXT wave numerics are embodied out, will be discontented with
The signal line of sufficient signal-to-noise ratio is remodified, to realize reduction signal noise, and for the signal for being unsatisfactory for requiring into
The control of row emphasis solves the problems, such as that effect is undesirable when using control line-spacing for noise reduction in the prior art, realizes by obtaining
The figure for obtaining NEXT, FEXT of different DQ lifts discovery risk point, subtracts so that selecting signal-to-noise ratio is unsatisfactory for system requirements
Few noise.
As shown in figure 4, the embodiment of the invention also discloses a kind of noise reduction system based on analysis channel signal-to-noise ratio, the system
System includes:
SNR emulation module isolates the crosstalk components contribution amount that noise is included for carrying out SNR emulation；
Signal-to-noise ratio computation module calculates signal-to-noise ratio for carrying out crosstalk definition；
Wave simulation module, for setting Tx, Rx parameter, signal simulation obtains NEXT, FEXT waveform；
Route modified module, for according to waveform signal numerical value, the signal line for being unsatisfactory for state of signal-to-noise to be carried out weight
New modification.
The SNR emulation module includes:
Master network simulation unit, for emulating master network, other networks keep silent status, measure the letter of transmitting and receiving terminal
Number；
Other network simulation units, for emulating to the equidirectional phase impulse of other networks, master network keeps silent, measures
Received noise content on master network.
The calculation formula of the signal-to-noise ratio is as follows:
Integral_sig is useful signal component, and Integral_ISI is intersymbol interference component, and Integral_xtk is
Crosstalk components, calculation formula difference are as follows:
The setting of Tx, Rx parameter is completed by Speed2000 software.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (8)
1. a kind of noise-reduction method based on analysis channel signal-to-noise ratio, which comprises the following steps:
S1, SNR emulation is carried out, isolates the crosstalk components contribution amount that noise is included；
S2, crosstalk definition is carried out, calculates signal-to-noise ratio；
S3, setting Tx, Rx parameter, signal simulation obtain NEXT, FEXT waveform；
S4, according to waveform signal numerical value, the signal line for being unsatisfactory for state of signal-to-noise is remodified.
2. a kind of noise-reduction method based on analysis channel signal-to-noise ratio according to claim 1, which is characterized in that the SNR
Emulation specifically:
Master network is emulated first, other networks keep silent status, measure the signal of transmitting and receiving terminal；
When emulating again, the equidirectional phase impulse emulation of other networks, master network keeps silent, measures received on master network make an uproar
Volume.
3. a kind of noise-reduction method based on analysis channel signal-to-noise ratio according to claim 1, which is characterized in that the noise
The calculation formula of ratio is as follows:
Integral_sig is useful signal component, and Integral_ISI is intersymbol interference component, and Integral_xtk is crosstalk
Component, calculation formula difference are as follows:
4. a kind of noise-reduction method based on analysis channel signal-to-noise ratio according to claim 1, which is characterized in that the Tx,
The setting of Rx parameter is completed by Speed2000 software.
5. a kind of noise reduction system based on analysis channel signal-to-noise ratio, which is characterized in that the system comprises:
SNR emulation module isolates the crosstalk components contribution amount that noise is included for carrying out SNR emulation；
Signal-to-noise ratio computation module calculates signal-to-noise ratio for carrying out crosstalk definition；
Wave simulation module, for setting Tx, Rx parameter, signal simulation obtains NEXT, FEXT waveform；
Route modified module, for according to waveform signal numerical value, the signal line for being unsatisfactory for state of signal-to-noise to be repaired again
Change.
6. a kind of noise reduction system based on analysis channel signal-to-noise ratio according to claim 5, which is characterized in that the SNR
Emulation module includes:
Master network simulation unit, for emulating master network, other networks keep silent status, measure the signal of transmitting and receiving terminal；
Other network simulation units, for emulating to the equidirectional phase impulse of other networks, master network keeps silent, measures major network
Received noise content on network.
7. a kind of noise reduction system based on analysis channel signal-to-noise ratio according to claim 5, which is characterized in that the noise
The calculation formula of ratio is as follows:
Integral_sig is useful signal component, and Integral_ISI is intersymbol interference component, and Integral_xtk is crosstalk
Component, calculation formula difference are as follows:
8. a kind of noise reduction system based on analysis channel signal-to-noise ratio according to claim 5, which is characterized in that the Tx,
The setting of Rx parameter is completed by Speed2000 software.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811128643.9A CN109217953B (en) | 2018-09-26 | 2018-09-26 | Noise reduction method and system based on analysis channel signal-to-noise ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811128643.9A CN109217953B (en) | 2018-09-26 | 2018-09-26 | Noise reduction method and system based on analysis channel signal-to-noise ratio |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109217953A true CN109217953A (en) | 2019-01-15 |
| CN109217953B CN109217953B (en) | 2021-07-27 |
Family
ID=64981736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811128643.9A Active CN109217953B (en) | 2018-09-26 | 2018-09-26 | Noise reduction method and system based on analysis channel signal-to-noise ratio |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109217953B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3458801B2 (en) * | 1999-12-15 | 2003-10-20 | 日本電気株式会社 | Multi-carrier transmission system and method |
| CN101197592A (en) * | 2006-12-07 | 2008-06-11 | 华为技术有限公司 | Far-end cross talk counteracting method and device, signal transmission device and signal processing system |
| CN101772900A (en) * | 2007-05-29 | 2010-07-07 | 诺基亚西门子通信公司 | The method and apparatus of crosstalk evaluation and the communication system that comprises this device |
| CN108400846A (en) * | 2018-01-25 | 2018-08-14 | 郑州云海信息技术有限公司 | A kind of analysis method of the bit error rate and Between Signal To Noise Ratio |
-
2018
- 2018-09-26 CN CN201811128643.9A patent/CN109217953B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3458801B2 (en) * | 1999-12-15 | 2003-10-20 | 日本電気株式会社 | Multi-carrier transmission system and method |
| CN101197592A (en) * | 2006-12-07 | 2008-06-11 | 华为技术有限公司 | Far-end cross talk counteracting method and device, signal transmission device and signal processing system |
| CN101772900A (en) * | 2007-05-29 | 2010-07-07 | 诺基亚西门子通信公司 | The method and apparatus of crosstalk evaluation and the communication system that comprises this device |
| CN108400846A (en) * | 2018-01-25 | 2018-08-14 | 郑州云海信息技术有限公司 | A kind of analysis method of the bit error rate and Between Signal To Noise Ratio |
Non-Patent Citations (1)
| Title |
|---|
| 蒋冬初: "高速数字电路的信号传输及其噪声抑制", 《中国博士学位论文全文数据库 信息科技辑》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109217953B (en) | 2021-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8891383B2 (en) | High-speed ethernet transceiver calibration with echo canceller reuse | |
| CN105553634B (en) | The method and system that communication in overlapping frequency spectrum coexists | |
| CN108900443B (en) | A kind of underwater acoustic channel interference elimination method in underwater sound communication | |
| CN110417463B (en) | Consistency test method, consistency test device and storage medium | |
| CN107018105B (en) | Underwater visible light communication method and system | |
| US9641286B2 (en) | Transmitter noise injection | |
| TW201415817A (en) | Method and controller for equalizing a received serial data stream | |
| CN105915484B (en) | A kind of single-tone and Multi-tone jamming denoising method of broadband bpsk signal | |
| US20070230355A1 (en) | Test apparatus and test method | |
| US20160277069A1 (en) | Power adjustment device and method | |
| WO2022126844A1 (en) | Watterson model-based short-wave aviation mobile channel modeling method | |
| CN109217953A (en) | A kind of noise-reduction method and system based on analysis channel signal-to-noise ratio | |
| WO2017215457A1 (en) | Damage compensation method and apparatus | |
| CN111641467B (en) | Marine inductive coupling chain communication method for resisting seawater multipath effect | |
| US9942125B1 (en) | High-speed ethernet diagnostic apparatus and method for cross-pair faults | |
| CN204948075U (en) | A kind of visible light communication receiving system based on neuroid | |
| CN101729097B (en) | Signal processing method, control module, interference cancellation device and communication system | |
| CN109639305A (en) | A kind of method and receiver for realizing data receiver processing | |
| Habib | SDR based modulation Performance of RF signal under different communication channel | |
| CN114070688A (en) | Multi-standard underwater acoustic communication signal modulation identification method and system | |
| CN109542416B (en) | High-speed waveform equalization method | |
| CN110677192A (en) | Self-adaptive equalization method suitable for scatter communication | |
| CN105830353B (en) | The methods, devices and systems that signal is sent | |
| WO2021037255A1 (en) | Channel compensation method and device | |
| CN108123906A (en) | Channel estimation methods |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |