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Equalization techniques to reduce intersymbol interference 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04B-001/10
  • H04L-025/08
출원번호 US-0055682 (1998-04-06)
발명자 / 주소
  • Gelfand Saul B.
  • Fevrier Ian J.
  • Fitz Michael P.
출원인 / 주소
  • Purdue Research Foundation
대리인 / 주소
    Woodard, Emhardt, Naughton, Moriarty & McNett
인용정보 피인용 횟수 : 55  인용 특허 : 22

초록

Equalization techniques are disclosed to reduce intersymbol interference of a received signal. Intersymbol interference is reduced by feedforward filtering and adjusting the input to the feedforward filter with feedback. This approach facilitates the removal of intersymbol interference from sparse s

대표청구항

[ What is claimed is:] [10.] An apparatus for processing a data signal with intersymbol interference, comprising:a first summing junction to provide a first reduction of the intersymbol interference by adjusting the data signal with a feedback signal;a first feedforward filter responsive to the data

이 특허에 인용된 특허 (22)

  1. Buttle Kenneth G. (Orangevale CA), Adaptive convergent decision feedback equalizer.
  2. Chevillat Pierre,CHX ; Eleftheriou Evangelos,CHX ; Maiwald Dietrich,CHX, Adaptive noise-predictive partial-response equalization for channels with spectral nulls.
  3. Juntti Juhani,FIX, Channel equalizer for a telecommunication system.
  4. Langberg Ehud, Channel training of multi-channel receiver system.
  5. Chennakeshu Sandeep (Clifton Park NY) Narasimhan Anand (Troy NY) Anderson John B. (Latham NY), Decision feedback equalization for digital cellular radio.
  6. Matsuura Hideki (Tokyo JPX), Decision feedback equalizer.
  7. Tsujimoto Ichiro (Tokyo JPX), Decision feedback equalizer including forward part whose signal reference point is shiftable depending on channel respon.
  8. Yang Jian (Mansfied MA) Eyuboglu M. Vedat (Concord MA), Device and method for data signal detection in the presence of distortion and interference in communication systems.
  9. Luvison Angelo (Turin IT) Pirani Giancarlo (Genoa IT), Digital equalizer for data-transmission system.
  10. Essig Daniel L. (La Jolla CA), Echo canceller.
  11. Lee Myeong-hwan,KRX, Equalizing method and equalizer using reference signal.
  12. Langberg Ehud (Ocean NJ), Impulse noise effect reduction.
  13. Tsujimoto Ichiro (Tokyo JPX), Interference cancellation apparatus capable of adaptive equalization and interference cancellation at a high speed on fa.
  14. Tsujimoto Ichiro (Tokyo JPX), Interference canceller with feedforward transversal filter having switched tap-gain coefficients.
  15. Falconer David Duncan (Red Bank NJ), Joint decision feedback equalization and carrier recovery adaptation in data transmission systems.
  16. Batruni Roy G. (Fremont CA), Method and apparatus for decision feedback equalization with reduced convergence time.
  17. Batruni Roy G. (Fremont CA), Method and apparatus for filtering post decision feedback equalization noise.
  18. Solve Torkel C. J. (Bromma SEX) Fertner Antoni (Solna SEX), Method and apparatus for timing recovery.
  19. Davis Robert C. (Indialantic FL), Nonlinear equalizer for correcting intersymbol interference in a digital data transmission system.
  20. Kakuishi Mitsuo (Yokohama JPX) Awata Yutaka (Kawasaki JPX) Ueno Norio (Yokohama JPX) Miyoshi Seiji (Yokohama JPX) Murakami Norio (Kawasaki JPX) Manabe Atsushi (Kawasaki JPX), Received data adjusting device.
  21. Fertner Antoni,SEX, Signal processing method and apparatus for reducing equalizer error.
  22. Gozzo Francesco (Endicott NY), System and method of estimating equalizer performance in the presence of channel mismatch.

이 특허를 인용한 특허 (55)

  1. Zhong, Lizhi, Adaptation of equalizer settings using error signals sampled at several different phases.
  2. Shanbhag,Abhijit G.; Yu,Qian; Phanse,Abhijit; Bhattacharjee,Jishnu; Mukherjee,Debanjan; Giroud,Fabian; Balasubramonian,Venugopal, Adaptive coefficient signal generator for adaptive signal equalizers with fractionally-spaced feedback.
  3. Shanbhag,Abhijit; Yu,Qian; Phanse,Abhijit; Bhattacharjee,Jishnu; Mukherjee,Debanjan; Giroud,Fabian; Balasubramonian,Venugopal, Adaptive coefficient signal generator for adaptive signal equalizers with fractionally-spaced feedback.
  4. Said, Ahmed M., Adaptive filter having shared structure.
  5. Nayler,Colin D., Arrangement for initializing digital equalizer settings based on comparing digital equalizer outputs to prescribed equalizer outputs.
  6. Bui,Sang T; Berman,Mark; Agazzi,Oscar E, Channel diagnostic systems and methods.
  7. Trans, Francois; Le-Ngoc, Tho, Channel equalization system and method.
  8. Kim, Do-Han; Jeon, Hyun-Bae, Channel equalizer, method and computer program for equalizing a channel.
  9. Momtaz, Afshin; Caresosa, Mario, Continuous time filter-decision feedback equalizer architecture for optical channel equalization.
  10. Ibragimov,Edem; Yu,Qian; Choudhary,Prashant, Decision feedback equalizer with dynamic feedback control.
  11. Ibragimov,Edem; Yu,Qian; Choudhary,Prashant, Decision feedback equalizer with dynamic feedback control.
  12. Shanbhag,Abhijit G.; Yu,Qian; Phanse,Abhijit M.; Bhatacharjee,Jishnu; Mukherjee,Debanjan; Balasubramonian,Venugopal; Giroud,Fabian; Ibragimov,Edem, Decision feedback equalizer with dynamic feedback control.
  13. Hsu, Yungping; Xu, Nelson; Cheung, Ricky, Decoding method and apparatus.
  14. Hsu, Yungping; Xu, Nelson; Cheung, Ricky, Decoding method and apparatus.
  15. Hsu, Yungping; Xu, Nelson; Cheung, Ricky, Decoding method and apparatus.
  16. Hsu,Yungping; Xu,Nelson; Cheung,Ricky, Decoding method and apparatus.
  17. Adireddy, Srihari; Tong, Lang, Dual equalizer for use in an receiver and method of operation.
  18. Abrishamkar, Farrokh; Smee, John E.; Glazko, Seguei A., Equalizer with combined CCK encoding-decoding in feedback filtering of decision feedback equalizer.
  19. Jeon, Hyun-bae; Kim, Do-han, Equalizer with overlapped filter banks and methods for the same.
  20. Zhong, Lizhi, Feed forward equalizer tap weight adaptation based on channel estimation.
  21. He, Runsheng, Feedforward equalizer for DFE based detector.
  22. He, Runsheng, Feedforward equalizer for DFE based detector.
  23. Al-Dhahir, Naofal; Sayed, Ali H, Finite-length equalization over multi-input multi-output (MIMO) channels.
  24. Al-Dhahir, Naofal; Sayed, Ali H, Finite-length equalization over multi-input multi-output channels.
  25. Bhakta,Bhavesh G.; Ramaswamy,Sridhar; Payne,Robert F.; Wu,Song, High speed decision feedback equalizer.
  26. Gomi, Shinichiro; Ogata, Masami; Ueda, Kazuhiko, Image processing apparatus, image processing method, program of image processing method, and recording medium in which program of image processing method has been recorded.
  27. Tonietto, Davide; Momtaz, Afshin, Integrated decision feedback equalizer and clock and data recovery.
  28. Nammi, SaiRamesh; Borah, Deva K., List-based detection in fading channels with long intersymbol interference.
  29. Matis, Kurt R., Method and apparatus for characterizing the distortion produced by electronic equipment.
  30. Bao, Jay; De, Parthapratim; Poon, Tommy C., Method and apparatus for equalizing a digital signal received via multiple transmission paths.
  31. Fimoff, Mark; Kim, Jin; Tomezak, Gregory J., Method for channel tracking in an LMS adaptive equalizer for 8VSB.
  32. Fimoff, Mark; Kim, Jin; Tomezak, Gregory J., Method for determining the step size for an LMS adaptive equalizer for 8VSB.
  33. Chen,Xi; Lenguyen,Bao; Wu,Wen Chung (Stewart), Methods and circuits for optimal equalization.
  34. Zerbe, Jared L.; Garlepp, Bruno W.; Chau, Pak S.; Donnelly, Kevin S.; Horowitz, Mark A.; Sidiropoulos, Stefanos; Garrett, Jr., Billy W.; Werner, Carl W., Multi-PAM output driver with distortion compensation.
  35. Zerbe, Jared L.; Garlepp, Bruno W.; Chau, Pak S.; Donnelly, Kevin S.; Horowitz, Mark A.; Sidiropoulos, Stefanos; Garrett, Jr., Billy W.; Werner, Carl W., Multiphase receiver with equalization circuitry.
  36. McCarty, Jr.,Robert Joseph, Nyquist filter and method.
  37. Kim, Joon Tae, Partial fractionally spaced channel equalizer for digital television.
  38. Thomas J. Endres ; Samir N. Hulyalkar ; Troy A. Schaffer ; Christopher H. Strolle, Reduced complexity equalizer for multi mode signaling.
  39. Chen, Chung-Jue; Parthasarathy, Vasudevan; Momtaz, Afshin; Chen, Hong, State based algorithm to minimize mean squared error.
  40. Agazzi, Oscar E.; Kruse, David; Abnous, Arthur; Hatamian, Mehdi, System and method for high-speed decoding and ISI compensation in a multi-pair transceiver system.
  41. Adireddy, Srihari; Tong, Lang, System and methods for precursor cancellation of intersymbol interference in a receiver.
  42. Achkir, D. Brice; Heston, Matt; Mazzini, Marco, Tester bundle.
  43. Struhsaker, Paul F.; Griffin, Kirk J.; McKown, Russell C.; Eckert, Michael S., Time division duplex wireless network and associated method using connection modulation groups.
  44. Struhsaker, Paul F.; Griffin, Kirk J.; McKown, Russell C.; Eckert, Michael S., Time division duplex wireless network and associated method using connection modulation groups.
  45. Struhsaker, Paul F.; Griffin, Kirk J.; McKown, Russell C.; Eckert, Michael S., Time division duplex wireless network and associated method using modulation groups.
  46. He, Runsheng, Transceiver with single coefficient based equalizer taps.
  47. He, Runsheng, Transceiver with single coefficient based equalizer taps.
  48. Gupta, Deepnarayan; Inamdar, Amol, Two stage radio frequency interference cancellation system and method.
  49. Gupta, Deepnarayan; Inamdar, Amol, Two stage radio frequency interference cancellation system and method.
  50. Gupta, Deepnarayan; Inamdar, Amol, Two stage radio frequency interference cancellation system and method.
  51. Gupta, Deepnarayan; Inamdar, Amol, Two stage radio frequency interference cancellation system and method.
  52. Achkir, D. Brice; Mazzini, Marco; Riboldi, Stefano; Muzio, Cristiana, Universal test system for testing electrical and optical hosts.
  53. Struhsaker, Paul F.; Nelson, Robert R.; McKown, Russell C., Wireless access system using multiple modulation formats in TDD frames and method of operation.
  54. Struhsaker, Paul F.; Nelson, Robert R.; McKown, Russell C., Wireless access system using multiple modulation formats in TDD frames and method of operation.
  55. Struhsaker,Paul F.; McKown,Russell C., Wireless communication system using block filtering and fast equalization-demodulation and method of operation.
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