CN1238975C - Suppression pulse interference device via power line communication systems - Google Patents
Suppression pulse interference device via power line communication systems Download PDFInfo
- Publication number
- CN1238975C CN1238975C CN 03105317 CN03105317A CN1238975C CN 1238975 C CN1238975 C CN 1238975C CN 03105317 CN03105317 CN 03105317 CN 03105317 A CN03105317 A CN 03105317A CN 1238975 C CN1238975 C CN 1238975C
- Authority
- CN
- China
- Prior art keywords
- amplitude limiter
- signal
- clipper
- thresholding
- power line
- 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
- 238000004891 communication Methods 0.000 title claims abstract description 22
- 230000001629 suppression Effects 0.000 title 1
- 230000008878 coupling Effects 0.000 claims abstract description 3
- 238000010168 coupling process Methods 0.000 claims abstract description 3
- 238000005859 coupling reaction Methods 0.000 claims abstract description 3
- 238000012549 training Methods 0.000 claims description 8
- 230000003044 adaptive effect Effects 0.000 claims description 4
- 230000000052 comparative effect Effects 0.000 claims description 4
- 208000019300 CLIPPERS Diseases 0.000 abstract 5
- 208000021930 chronic lymphocytic inflammation with pontine perivascular enhancement responsive to steroids Diseases 0.000 abstract 5
- 230000003750 conditioning effect Effects 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Landscapes
- Dc Digital Transmission (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The present invention discloses a device for suppressing pulse interference in a communication system of power lines, which comprises a clipper capable of adjusting thresholds and a self-adapting adjusting device of the threshold clipper, wherein the self-adapting adjusting device is composed of an error comparing device for generating a threshold conditioning signal of the clipper. The clipper is connected in series between the front end of power communication equipment and the rear end of a coupling transformer. The error comparing device compares given data in received information with specific data to generate the conditioning signal as threshold control sent to the clipper. The present invention has the advantages that the device is suitable for the power-line communication equipment with severe impulse interference, and the self-adapting clipping threshold can furthest suppress the impulse interference when simultaneously satisfying the optimal signal receiving condition. The present invention irrelevant to modulation modes adopted by the communication equipment has general adaptability.
Description
Technical field
The invention belongs to digital information transmission technical field, the device that particularly a kind of suppressor pulse in electric line communication system disturbs.
Background technology
Power line is the most a kind of media that distributes, and people wish to pass through this kind media transmission information always for these years.What be most widely used at present is power line carrier equipment, and it is to utilize the existing power line to transmit the power monitoring signal of low rate, but the transmission rate of this kind equipment is very low, and people have done a large amount of effort for improving its transmission rate.
The maximum characteristics of comparing power line communication with other communication mode are: have serious impulse disturbances (as: interference that startup of the unlatching of fluorescent lamp, the switch of television set, refrigerator or the like causes) on the power line, these serious interference influence the raising of traffic rate.
In the former power line communications apparatus, because transmission rate is very low, the influence of impulse disturbances is less, and along with the raising of transmission rate, the influence of impulse disturbances is increasing.The present invention can suppress impulse disturbances on the power line effectively to the influence of power line communications apparatus, has improved reliability of information transmission.
Summary of the invention
The object of the present invention is to provide a kind of easy, effectively suppress the device of the impulse disturbances on the power line.
The device that suppressor pulse in a kind of electric line communication system of the present invention disturbs, it comprises that the amplitude limiter that can adjust thresholding and one are used to produce the amplitude limiter thresholding and adjust the adaptive threshold amplitude limiter adjusting device that the error comparison means of signal is formed; Described amplitude limiter is serially connected between the front end and coupling transformer rear end of electric power communication device; Described error comparison means is that big more by error, control signal is big more according between given data in the reception information and the specific data, and the comparative pattern that the amplitude limiter thresholding is high more produces adjusts signal, and amplitude limiter is delivered in control as thresholding; The given data of described error comparison means, from the training sequence of received signal in the electric power communication device, specific data are from the local training sequence that sends signal.
Good effect and advantage that the present invention has are as follows: be applicable to the power line communications apparatus that impulse disturbances is serious, its adaptive amplitude limit thresholding can guarantee suppressor pulse interference to greatest extent when satisfying the optimum condition of acceptance of signal.The modulation system that the present invention and communication equipment are adopted is irrelevant, and general applicability is arranged.
Description of drawings
Fig. 1 is common power line communications apparatus (receiving terminal) block diagram.
Fig. 2 is power line communications apparatus (receiving terminal) block diagram that has the adaptive threshold amplitude limiter of the present invention.
Fig. 3 is a kind of adjustable threshold amplitude limiter circuit schematic diagram of the present invention.
Fig. 4 is a kind of generation device embodiment block diagram of adjustable threshold amplitude limiter control signal of the present invention.
Fig. 5 is for sending the frame assumption diagram of signal.
Fig. 6 is the frame assumption diagram of received signal.
Embodiment
In conjunction with the accompanying drawings 2,3,4, embodiments of the present invention are described as follows:
Symbol description in the accompanying drawing: d is the information sequence of output, N is the training sequence that receives, M is local training sequence, the synchronizing sequence of S ' for sending, S is the synchronizing sequence that receives, the data sequence of d ' for sending, and d is the data sequence that receives, e is the control signal of amplitude limiter thresholding, and D/A represents digital to analog converter.
Shown in the accompanying drawing 2 is to adopt power line communications apparatus of the present invention (receiving terminal).During beginning, the thresholding of adjustable threshold amplitude limiter is adjusted to maximum, after the demodulator operate as normal, the training sequence that the training sequence N of demodulator output gives error comparison means and this locality carries out error ratio, gives the adjustable threshold amplitude limiter according to the size output control signal of error.Error is big more, and the control voltage signal of output is big more.The control voltage signal is big more, and the amplitude limit thresholding of amplitude limiter is high more.
Fig. 3 is a kind of implementation method of adjustable threshold amplitude limiter, and Vin is an input signal, and Vout is that e is the control signal of amplitude limiter through the output signal behind the amplitude limiter.As seen from Figure 3: e is big more, and the amplitude limit thresholding is high more; E is more little, and the amplitude limit thresholding is low more; The size of control e just can be controlled the size of amplitude limit thresholding.
Fig. 4 is a kind of implementation method of control signal e.Produce the error comparative result behind device for detecting code error comparative sequences N, the M.The difference of sequence N, M is big more, and the output signal of device for detecting code error is big more, and the control signal e that produces through digital to analog converter is just big more, and the thresholding of amplitude limiter is just high more; The difference of sequence N, M is more little, and the output signal of device for detecting code error is more little, and the control signal e that produces through digital to analog converter is just more little, and the thresholding of amplitude limiter is just low more.
Fig. 5 is a kind of frame structure of transfer of data, and Fig. 6 is the frame structure of the signal that receives, and under the condition of no error code transmission, the signal that receives and the signal of transmission are identical; Having under the condition of error code, the signal that receives is different with the signal of transmission.
Claims (1)
1. the device that disturbs of the suppressor pulse in the electric line communication system is characterized in that: it comprises that the amplitude limiter that can adjust thresholding and one are used to produce the amplitude limiter thresholding and adjust the adaptive threshold amplitude limiter adjusting device that the error comparison means of signal is formed; Described amplitude limiter is serially connected between the front end and coupling transformer rear end of electric power communication device; Described error comparison means is that big more by error, control signal is big more according between given data in the reception information and the specific data, and the comparative pattern that the amplitude limiter thresholding is high more produces adjusts signal, and amplitude limiter is delivered in control as thresholding; The given data of described error comparison means, from the training sequence of received signal in the electric power communication device, specific data are from the local training sequence that sends signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03105317 CN1238975C (en) | 2003-02-24 | 2003-02-24 | Suppression pulse interference device via power line communication systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03105317 CN1238975C (en) | 2003-02-24 | 2003-02-24 | Suppression pulse interference device via power line communication systems |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1440137A CN1440137A (en) | 2003-09-03 |
| CN1238975C true CN1238975C (en) | 2006-01-25 |
Family
ID=27796616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03105317 Expired - Fee Related CN1238975C (en) | 2003-02-24 | 2003-02-24 | Suppression pulse interference device via power line communication systems |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1238975C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1558564B (en) * | 2004-01-16 | 2010-04-14 | 中国电力科学研究院 | Data Communication System Based on Power Line and Its Realization Method |
| CN101873124B (en) * | 2010-05-24 | 2012-03-14 | 哈尔滨工程大学 | Self-adaptive threshold pulse amplified shaping circuit |
| CN103825848B (en) * | 2014-01-17 | 2017-01-18 | 宁波大学 | Blind estimation method of signal-to-interference-pulse-noise ratio (SINR) in power line communication system |
-
2003
- 2003-02-24 CN CN 03105317 patent/CN1238975C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1440137A (en) | 2003-09-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101714968B (en) | Communication device for multi-carrier signal communication with multiple sub-carriers via power lines | |
| US4995057A (en) | Technique for achieving the theoretical coding gain of digital signals incorporating error correction | |
| EP0725510A1 (en) | Method and apparatus for reducing peak-to-average requirements in multi-tone communication circuits | |
| EP2193640B1 (en) | Communication apparatus, communication method, and integrated circuit | |
| KR101476240B1 (en) | High speed CAN communication system by using pass-band modulation | |
| US6584160B1 (en) | System and method for reducing the effects of clipping in a DMT transceiver | |
| CN103516395B (en) | Self-adaptive electric power wire carrier wave communication device and method | |
| CN111181817A (en) | Slave device for enhancing data rate of DSI3 bus | |
| US20020196863A1 (en) | Peak suppression method and data transmission apparatus | |
| CN114826330B (en) | A method for synchronizing characteristic current communication in low-voltage station areas based on m-sequence | |
| CN1238975C (en) | Suppression pulse interference device via power line communication systems | |
| CN104144001B (en) | A kind of method improving power line carrier signal transmission reliability | |
| CN102571152A (en) | Control device of transmitted power of power line carrier communication | |
| US6680978B1 (en) | Method and apparatus for nonlinear filtering and controlling the peak-to-average ratio | |
| DE69931490T2 (en) | COLLISION PROCESSING SCHEME FOR A DISCRETE MULTI-CONDITIONING COMMUNICATION NETWORK | |
| RU2511429C2 (en) | Serial interface transceiver with galvanic isolation element | |
| US7099628B2 (en) | Training signal in a single carrier transmission | |
| GB2094592A (en) | Adaptive equaliser | |
| WO2001031868A1 (en) | Method and apparatus for communication using pulse decoding | |
| US20220329220A1 (en) | Power spectral shaping for in-band emission control | |
| CN102045275A (en) | Cable-transmitted Manchester coded signal receiver | |
| CN217135489U (en) | Digital signal regulating circuit for medium and long distance transmission | |
| CN108418605B (en) | Communication method based on power line carrier communication system adopting OFDM | |
| US8526532B2 (en) | Transmitter with dynamic equalizer | |
| US11405244B2 (en) | Single carrier transmission with adaptive roll-off factor for ultra reliable and low latency communication systems |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING HENGFENGHUITONG SCIENCE CO., LTD. Free format text: FORMER OWNER: YAO CHENG; WANG YUENONG Effective date: 20081017 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081017 Address after: Room 406, building D, Pioneer Park, 2 information road, Beijing, Haidian District Patentee after: Beijing Hengfeng Huitong Science and Technology Co., Ltd. Address before: Jinyu Building No. 100 West Third Ring Road in Beijing City, 10 storey office building to Wang Yuenong Patentee before: Tao Cheng Patentee before: Wang Yuenong |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060125 Termination date: 20110224 |