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Correlation detector and communication apparatus

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04J-013/00
출원번호 US-0481396 (1995-06-13)
우선권정보 JP-0257127 (1993-10-14); JP-0142057 (1994-06-23)
국제출원번호 PCT/JP94/01715 (1994-10-13)
§371/§102 date 19950613 (19950613)
국제공개번호 WO-9510903 (1995-04-20)
발명자 / 주소
  • Dohi Tomohiro (Yokohama JPX) Sawahashi Mamoru (Yokosuka JPX) Adachi Fumiyuki (Yokohama JPX)
출원인 / 주소
  • NTT Mobile Communications Network, Inc. (Tokyo JPX 03)
인용정보 피인용 횟수 : 74  인용 특허 : 6

초록

A correlation detector is provided which can establish initial acquisition quickly, and achieve high accuracy tracking by extracting crosscorrelation components in a receiver for CDMA communication, and a communication system using the correlation detector is also provided. During the initial acquis

대표청구항

Synchronizing apparatus including a tracking means for maintaining synchronization between a received signal and a despreading code by using a correlation between the received signal and the despreading code, the received signal being CDMA spread and received by a receiver, and the despreading code

이 특허에 인용된 특허 (6)

  1. Mower Vaughn L. (Bountiful UT), Carrier aided code tracking loop.
  2. Zscheile ; Jr. John W. (West-Farmington UT) Lundquist Alan E. (Salt Lake City UT) Wright Robert A. (Sandy UT), Coherent sequential PN code extractor.
  3. Mower Vaughn L. (Bountiful UT) Zscheile ; Jr. John W. (Farmington UT), Detecting and tracking circuit for component PN codes.
  4. Nakagawa Yoshikatsu (Yomato JPX), Initial acquisition method in spread spectrum system and such system.
  5. Frosch Robert A. Administrator of the National Aeronautics and Space Administration ; with respect to an invention of ( Tempe AZ) Carson Lansing M. (Tempe AZ), PN Lock indicator for dithered PN code tracking loop.
  6. Kingston Samuel C. (Salt Lake City UT) Barham Steven T. (Salt Lake City UT) Simonsen Harold L. (West Valley City UT), Programmable digital acquisition and tracking controller.

이 특허를 인용한 특허 (74)

  1. Hirata, Masaru, AFC control apparatus and method in mobile communication system and mobile communication equipment using the apparatus and method.
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  4. Raphaeli, Dan; Kaufman, Oren; Bassin, Evgeny; Zarud, Boris, Acquisition of sychronization in a spread spectrum communications transceiver.
  5. Wagner Andy ; McVey James D., Adaptive ingress filtering system.
  6. Lomp, Gary R., Adaptive vector correlator for spread-spectrum communications.
  7. Bang, Seung-Chang; Kim, Tae-Joong; Kim, Jae-Heung; Kim, Jung-Im; Chae, Jong-Suk; Lee, Hyuck-Jae; Shim, Jae-Ryong; Lee, Narm-Hee, Apparatus and method for modulating data message by employing orthogonal variable spreading factor (OVSF) codes in mobile communicating system.
  8. Bang, Seung Chan; Kim, Tae Joong; Kim, Jae Heung; Kim, Jung Im; Chae, Jong Suk; Lee, Hyuck Jae; Shim, Jae Ryong; Lee, Narm Hee, Apparatus and method for modulating data message by employing orthogonal variable spreading factor (OVSF) codes in mobile communication system.
  9. Bang, Seung-Chang; Kim, Tae-Joong; Kim, Jae-Heung; Kim, Jung-Im; Chae, Jong-Suk; Lee, Hyuck-Jae; Shim, Jae-Ryong; Lee, Narm-Hee, Apparatus and method for modulating data message by employing orthogonal variable spreading factor (OVSF) codes in mobile communication system.
  10. Bang,Seung Chan; Kim,Tae Joong; Kim,Jae Heung; Kim,Jung Im; Chae,Jong Suk; Lee,Hyuck Jae; Shim,Jae Ryong; Lee,Narm Hee, Apparatus and method for modulating data message by employing orthogonal variable spreading factor (OVSF) codes in mobile communication system.
  11. Mimura Yukie,JPX, Apparatus for and method of acquiring synchronization for spread-spectrum communication system.
  12. Ozluturk,Fatih M.; Lomp,Gary R.; Kowalski,John, Apparatus for initial power control for spread-spectrum communications.
  13. Lomp, Gary R.; Ozluturk, Faith M.; Kowalski, John, Automatic power control system for a code division multiple access (CDMA) communications system.
  14. Lomp, Gary; Ozluturk, Fatih; Kowalski, John, Automatic power control system for a code division multiple access (CDMA) communications system.
  15. Lomp,Gary; Ozluturk,Fatih; Kowalski,John, Automatic power control system for a code division multiple access (CDMA) communications system.
  16. Erik A. Ramberg ; Robert K. Froelich ; Forrest F. Fulton, Bandpass correlation of a spread spectrum signal.
  17. Ramberg, Erik A.; Froelich, Robert K.; Fulton, Forrest F., Bandpass processing of a spread spectrum signal.
  18. Ozluturk, Fatih M.; Lomp, Gary R., Centroid tracking for spread-spectrum communications.
  19. Kolze,Thomas J.; Yousef,Nabil R.; Min,Jonathan S., Chip blanking and processing in SCDMA to mitigate impulse and burst noise and/or distortion.
  20. Cox Timothy P., Class of low cross correlation non-palindromic synchronization sequences for code tracking in synchronous multiple acces.
  21. Zhou Changming,JPX ; Shou Guoliang,JPX ; Yamamoto Makoto,JPX ; Takatori Sunao,JPX, Code acquisition and tracking circuit using switched matched filter and sliding correlators.
  22. Ozluturk, Fatih M.; Jacques, Alexander M.; Lomp, Gary R.; Kowalski, John, Code division multiple access (CDMA) communication system.
  23. Ozukturk, Fatih; Jacques, Alexander; Lomp, Gary; Kowalski, John, Code division multiple access (CDMA) communication system.
  24. Pon Rayman W., Code multipath error estimation using weighted correlations.
  25. Sawahashi Mamoru,JPX ; Adachi Fumiyuki,JPX, Coherent tracking apparatus and method for CDMA receiver.
  26. Mizuno,Koutaro, De-spreader operative with selectable operational clock for spread spectrum communication and a method for the same.
  27. Takeda, Daisuke; Mukai, Manabu, Decoding apparatus and decoding method.
  28. Naden, Gary A.; Rouquette, Robert E.; Reiser, Dale E., Direct sequence spread spectrum method computer-based product apparatus and system tolerant to frequency reference offset.
  29. Naden Gary A. ; Rouquette Robert E. ; Sanderford ; Jr. H. Britton ; Reiser Dale E. ; Hwang Charles A. ; Reed Marc L., Direct sequence spread spectrum method, computer-based product, apparatus and system tolerant to frequency reference offset.
  30. Froelich Robert K. ; Fulton Forrest, Frequency discrimination in a spread spectrum signal processing system.
  31. Ozluturk,Fatih M.; Lomp,Gary R.; Kowalski,John, Initial power control for spread-spectrum communications.
  32. Uhm Oui-Suk,KRX ; Kim Dae-jung,KRX ; Park Kyung,KRX ; Roh Jin-woo,KRX, Initial synchronization method in code division multiple access reception system.
  33. Scott Bierly ; Marc Harlacher ; Robert Smarrelli ; Aaron Weinberg, Integrated beamforming/rake/mud CDMA receiver architecture.
  34. Hennedy Michael ; Davidovici Sorin, Intelligent power management for a programmable matched filter.
  35. Hennedy Michael ; Davidovici Sorin, Intelligent power management for a programmable matched filter.
  36. Schmidl, Timothy M.; Sriram, Sundararajan, Joint position and carrier frequency estimation method of initial frequency acquisition for a WCDMA mobile terminal.
  37. Kawama, Shuichi; Iizuka, Kunihiko, Matched filter.
  38. Lomp,Gary R., Median weighted tracking for spread-spectrum communications.
  39. Ozluturk, Fatih; Lomp, Gary R.; Kowalski, John, Method and apparatus for adaptive power control for spread-spectrum communications.
  40. Raphaeli,Dan; Kaufman,Oren; Bassin,Evgeny; Zarud,Boris, Method and apparatus for generating a synchronization sequence in a spread spectrum communications transceiver.
  41. Vihri?l?, Jaakko, Method and arrangement for reducing frequency offset in a radio receiver.
  42. Ozluturk, Fatih; Lomp, Gary, Method and subscriber unit for performing power control.
  43. Struhsaker, Paul F.; Quinn, Patrick Wilton; Easson, Michael J.; Hudson, Thomas C., Method and system for a micro-channel bank for providing voice, data and multimedia services in a wireless local loop system.
  44. Struhsaker Paul F. ; Quinn Patrick Wilton ; Easson Michael J. ; Hudson Thomas C., Method and system for a micro-channel bank for providing voice, data, and multimedia services in a wireless local loop system.
  45. Paul F. Struhsaker ; Patrick Wilton Quinn ; Michael J. Easson ; Thomas C. Hudson, Method and system for an air interface for providing voice, data, and multimedia services in a wireless local loop system.
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  47. Struhsaker Paul F. ; Quinn Patrick Wilton ; Easson Michael J. ; Hudson Thomas C., Method and system for an air interface for providing voice, data, and multimedia services in a wireless local loop system.
  48. Struhsaker Paul F. ; Quinn Patrick Wilton ; Easson Michael J. ; Hudson Thomas C., Method and system for protocols for providing voice, data, and multimedia services in a wireless local loop system.
  49. Struhsaker, Paul F.; Quinn, Patrick Wilton; Easson, Michael J.; Hudson, Thomas C., Method and system protocols for providing voice, data, and multimedia services in a wireless local loop system.
  50. Harrison Daniel David ; Tiemann Jerome Johnson, Method for Doppler-replica harmonic avoidance.
  51. Ozluturk, Fatih M.; Lomp, Gary R.; Kowalski, John, Method for adaptive forward power control for spread-spectrum communications.
  52. Ozluturk, Faith M.; Lomp, Gary R.; Kowalski, John, Method for adaptive reverse power control for spread-spectrum communications.
  53. Gerakoulis Diakoumis Parissis, Method of synchronizing satellite switched CDMA communication system.
  54. Motoyoshi, Gen, Mobile communication device having a good tracking precision and a wide following range of synchronization.
  55. Aaron Weinberg ; Marc Harlacher ; Scott Bierly ; Kenneth Cunningham ; Daniel Urban, Multi-band, multi-function integrated transceiver.
  56. Kowalski John M. ; Kandala Srinivas ; Somayazulu V. Srinivasa, Pilot aided, time-varying finite impulse response, adaptive channel matching receiving system and method.
  57. Ramberg Erik A. ; Froelich Robert K. ; Fulton Forrest F., Processing a spread spectrum signal in a frequency adjustable system.
  58. Lomp,Gary; Kowalski,John; Ozluturk,Fatih; Silverberg,Avi; Regis,Robert; Luddy,Michael; Marra,Alexander; Jacques,Alexander, Rapid acquisition spreading codes for spread-spectrum communications.
  59. Ramberg, Erik A.; Froelich, Robert K.; Fulton, Forrest F., Receiving a spread spectrum signal.
  60. Somayazulu V. Srinivasa, Sequential detection system and method with adaptive bias.
  61. Scott Bierly ; Marc Harlacher ; Aaron Weinberg, Sequential-acquisition, multi-band, multi-channel, matched filter.
  62. Uta Takaki,JPX ; Yano Takashi,JPX ; Doi Nobukazu,JPX, Spread spectrum communication system.
  63. Lomp, Gary; Kowalski, John; Ozluturk, Fatih; Silverberg, Avi; Regis, Robert; Luddy, Michael; Marra, Alexander; Jacques, Alexander, Spread spectrum system assigning information signals to message-code signals.
  64. Lomp, Gary; Kowalski, John; Ozluturk, Fatih; Silverberg, Avi; Regis, Robert; Luddy, Michael; Marra, Alexander; Jacques, Alexander, Spread-spectrum system for assigning information signals having different data rates.
  65. Kondo Takayuki,JPX, Synchronism acquisition method and apparatus for correlation demodulation.
  66. Taniguchi,Shoji; Kuroiwa,Koichi; Kanasugi,Masami; Hikita,Mahiro, Synchronization establishing device, method of establishing synchronization, and receiver.
  67. Sakuma,Emiko, Synchronous acquisition device for CDMA receiver.
  68. Kowalski John M. ; Kandala Srinivas ; Somayazulu V. Srinivasa, System and method for CDMA channel estimation.
  69. Chrisikos, George, System and method for automatic frequency control in spread spectrum communications.
  70. Komatsu Masahiro,JPX, System and method for controlling transmission power.
  71. Akopian, David; Valio, Harri; Turunen, Seppo, System for method for fine acquisition of a spread spectrum signal.
  72. Ozluturk,Fatih M.; Lomp,Gary R., System for using rapid acquisition spreading codes for spread-spectrum communications.
  73. Kenney, Thomas J.; Xu, Weiping, Time tracking loop for pilot aided direct sequence spread spectrum systems.
  74. Lomp, Gary; Ozluturk, Fatih; Silverberg, Avi, Transferring voice and non-voice data.
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