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Methods and apparatus for canceling adjacent channel signals in digital communications systems

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04L-025/08
출원번호 US-0901693 (1997-07-28)
발명자 / 주소
  • Chennakeshu Sandeep
  • Ramesh Rajaram
  • Bottomley Gregory E.
  • Dent Paul W.
출원인 / 주소
  • Ericsson Inc.
대리인 / 주소
    Burns, Doane, Swecker & Mathis, L.L.P.
인용정보 피인용 횟수 : 68  인용 특허 : 6

초록

A multi-signal cancelling demodulator in which signals of interest are demodulated using information obtained during demodulation of adjacent signals. By utilizing detected information in an across-channel fashion, exemplary cancelling demodulators provide superior adjacent channel interference reje

대표청구항

[ What is claimed is:] [1.] A baseband processor, comprising:means for receiving a plurality of baseband sample streams, each stream corresponding to one of a plurality of communications frequency bands; anda plurality of demodulating means, each demodulating means for demodulating a received signal

이 특허에 인용된 특허 (6)

  1. Dent Paul W. ; Bottomley Gregory E., Interference mitigation by joint decoding of overlapped signals.
  2. Uchida Yoshinori,JPX ; Satoh Shinichi,JPX, Interference radio wave elimination device and interference radio wave elimination method.
  3. Forssen Ulf (Saltsjo-Boo SEX) Gudmundson Bjorn (Sollentuna SEX), Method and apparatus for transmitting and receiving signals using two classes of channels.
  4. Antia Yezdi (Gaithersburg MD) Kim Youngky (Potomac MD) Pham Hiep (Gaithersburg MD), Multi-processor demodulator for digital cellular base station employing partitioned demodulation procedure with pipeline.
  5. Okanoue Kazuhiro (Tokyo JPX), Noise-immune space diversity receiver.
  6. Forssen Ulf (Saltsjo-Boo SEX) Gudmundson Bjorn (Sollentuna SEX), Transceiver algorithms of antenna arrays.

이 특허를 인용한 특허 (68)

  1. Tomasin, Stefano; Pfister, Henry David; Hou, Jilei; Smee, John Edward, Adaptation of transmit subchannel gains in a system with interference cancellation.
  2. Kroeger,Brian William, Adjacent channel interference mitigation for FM digital audio broadcasting receivers.
  3. Liu, Haiyang; Holm, Henrik, Apparatus and method for interferometric frequency modulation to exploit cooperative interference in wireless communications.
  4. Smee, John Edward; Pfister, Henry David; Hou, Jilei; Tomasin, Stefano, Channel estimation for interference cancellation.
  5. Kroeger,Brian William, Coherent AM demodulator using a weighted LSB/USB sum for interference mitigation.
  6. Matolak, David William, Data encryption by nonlinear transfer function.
  7. Linnartz, Johan Paul Marie Gerard, Diversity receiver having cross coupled channel parameter estimation.
  8. Alamouti, Siavash; Tarokh, Vahid, Diversity technique for wireless communications.
  9. Khayrallah Ali S., Equalizer with channel tracker switching.
  10. Dolder Nicole,GBX, Extraction of primary and co-channel signals.
  11. Gu, Jian; Desai, Prasanna, Frequency correction burst detection.
  12. Mostafa,Ayman; Kobylinski,Richard A.; Ghosh,Arunhaba, Interference cancellation and receive diversity for single-valued modulation receivers.
  13. Hou, Jilei; Soriaga, Joseph B.; Smee, John Edward; Chen, Jinghu, Iterative interference cancellation system and method.
  14. Pan,Jung Lin; DiFazio,Robert A.; Tsai,Yingming, Joint channel equalizer interference canceller advanced receiver.
  15. Kobylinski, Richard A.; Wolter, David Randall, Joint demodulation of a desired signal and an interfering signal based on a carrier-to-interference ratio estimate.
  16. Kobylinski, Richard A.; Wolter, David Randall, Joint demodulation using a Viterbi equalizer having an adaptive total number of states.
  17. Kobylinski,Richard A.; Wolter,David Randall, Joint demodulation using a Viterbi equalizer having an adaptive total number of states.
  18. Kobylinski, Richard A.; Wolter, David Randall, Joint demodulation using a viterbi equalizer having an adaptive total number of states.
  19. Kobylinski, Richard A.; Wolter, David Randall, Joint demodulation using a viterbi equalizer having an adaptive total number of states.
  20. Kobylinski, Richard A.; Wolter, David Randall, Joint demodulation using a viterbi equalizer having an adaptive total number of states.
  21. Hou, Jilei; Pfister, Henry David; Smee, John Edward; Tomasin, Stefano, Joint interference cancellation of pilot, overhead and traffic channels.
  22. Alamouti, Siavash; Poon, Patrick; Tarokh, Vahid, Low complexity maximum likelihood detection of concatenated space codes for wireless applications.
  23. Alamouti, Siavash; Poon, Patrick; Tarokh, Vahid, Low complexity maximum likelihood detection of concatenated space codes for wireless applications.
  24. Alamouti, Siavash; Poon, Patrick; Tarokh, Vahid, Low complexity maximum likelihood detection of concatenated space codes for wireless applications.
  25. Heddergott,Ralf; Krakowski,Claudiu; Kr��ger,Martin, Maximum likelihood estimation of the channel coefficients and of the DC offset in a digital baseband signal of a radio receiver using the SAGE algorithm.
  26. Atarius,Roozbeh; Bottomley,Gregory; Dent,Paul W., Method and apparatus for automatic frequency control in a CDMA receiver.
  27. Coralli, Alessandro Vanelli; Pfister, Henry David; Hou, Jilei; Smee, John Edward; Padovani, Roberto; Butler, Brian K.; Levin, Jeffrey A.; Wilborn, Thomas B.; Bender, Paul E., Method and apparatus for canceling pilot interference in a wireless communication system.
  28. Coralli, Alessandro Vanelli; Pfister, Henry David; Hou, Jilei; Smee, John Edward; Padovani, Roberto; Butler, Brian K; Levin, Jeffrey A; Wilborn, Thomas B; Bender, Paul E, Method and apparatus for canceling pilot interference in a wireless communication system.
  29. Whang, Keum-Chan; Kwon, Hyuck-Chan, Method and apparatus for interference cancellation in a communication system.
  30. Wilhelmsson, Leif, Method and apparatus for iterative parameter estimation.
  31. Vandenameele, Patrick, Method and apparatus for multi-user transmission.
  32. Vandenameele, Patrick, Method and apparatus for multi-user transmission.
  33. Naguleswaran,Sanjeev; Rice,Mark, Method and receiver for processing a multi-user signal.
  34. Kokkonen, Mikko, Method and receiver for reception of a composite signal.
  35. Kilfoyle, Daniel B.; Slocumb, III, Travis H.; Carson, Steven, Method and system for a channel selective repeater with capacity enhancement in a spread-spectrum wireless network.
  36. Kilfoyle, Daniel B.; Slocumb, III, Travis H.; Carson, Steven, Method and system for a remote downlink transmitter for increasing the capacity and downlink capability of a multiple access interference limited spread-spectrum wireless network.
  37. Soriaga, Joseph B.; Bhushan, Naga; Hou, Jilei; Chen, Jinghu; Smee, John Edward, Method and system for signal reconstruction from spatially and temporally correlated received samples.
  38. Chizat,Romain, Method for receiving a message signal, receiver, receiving device and message transmission system for this.
  39. Zhao, Guixue, Method, modem, and system for canceling adjacent channel interference.
  40. Dabak, Anand G.; Negi, Rohit, Mobile receiver phase correction circuit.
  41. Kilfoyle, Daniel B.; Slocumb, Travis H.; Potter, Michael; Carson, Steve, Multistage reception of code division multiple access transmissions.
  42. Kilfoyle,Daniel B.; Slocumb,Travis H.; Potter,Michael; Carson,Steve, Multistage reception of code division multiple access transmissions.
  43. Kobylinski, Richard A.; Wolter, David Randall, Non-joint demodulation of a desired signal in response to a carrier-to-interference ratio estimate.
  44. Doi,Yoshiharu; Miyata,Takeo, Radio receiving system and synchronization detection method.
  45. Boyer, Keith Gary; Hennecken, Mark A., Read equalizer optimization based on the PTR effects to write equalization.
  46. Harada, Hiroshi; Fujise, Masayuki; Funada, Ryuuhei; Sawada, Manabu; Sasaki, Kunihiko, Receiving apparatus, receiving method, program and information recording medium.
  47. Reznik,Alexander; Yang,Rui; Li,Bin; Zeira,Ariela, Reduced complexity sliding window based equalizer.
  48. Yang,Rui; Li,Bin; Reznik,Alexander; Zeira,Ariela, Reduced complexity sliding window based equalizer.
  49. Anand G. Dabak ; Rohit Negi, Space time block coded transmit antenna diversity for WCDMA.
  50. Anand G. Dabak ; Rohit Negi, Space time block coded transmit antenna diversity for WCDMA.
  51. Dabak, Anand G.; Negi, Rohit, Space time block coded transmit antenna diversity for WCDMA.
  52. Dabak, Anand G.; Negi, Rohit, Space time block coded transmit antenna diversity for WCDMA.
  53. Dabak,Anand G.; Negi,Rohit, Space time block coded transmit antenna diversity for WCDMA.
  54. Dabak,Anand G.; Negi,Rohit, Space time block coded transmit antenna diversity for WCDMA.
  55. Mostafa, Ayman, Systems and methods for interference cancellation in a multiple antenna radio receiver system.
  56. Mostafa, Ayman, Systems and methods for interference cancellation in a radio receiver system.
  57. Mostafa, Ayman A., Systems and methods for interference cancellation in a radio receiver system.
  58. Mostafa,Ayman A., Systems and methods for interference cancellation in a radio receiver system.
  59. Reznik,Alexander, Telescoping window based equalization.
  60. Pfister, Henry David; Hou, Jilei; Smee, John Edward; Tomasin, Stefano, Traffic interference cancellation.
  61. Alamouti, Siavash; Tarokh, Vahid, Transmitter diversity technique for wireless communications.
  62. Alamouti, Siavash; Tarokh, Vahid, Transmitter diversity technique for wireless communications.
  63. Alamouti, Siavash; Tarokh, Vahid, Transmitter diversity technique for wireless communications.
  64. Lo, Titus; Wang, Ruifeng, Turbo channel estimation for OFDM systems.
  65. Lo, Titus; Wang, Ruifeng, Turbo channel estimation for OFDM systems.
  66. Lo, Titus; Wang, Ruifeng, Turbo channel estimation for OFDM systems.
  67. Lo, Titus; Wang, Ruifeng, Turbo channel estimation for OFDM systems.
  68. Takeda, Kazuki; Harada, Hiroki; Nagata, Satoshi, User terminal, radio base station, and radio communication method.
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