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Method and apparatus for generating Walsh codes 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H03M-007/00
  • G06F-007/36
출원번호 US-0860871 (1992-03-31)
발명자 / 주소
  • Gurney David P. (Palatine IL)
출원인 / 주소
  • Motorola, Inc. (Schaumburg IL 02)
인용정보 피인용 횟수 : 41  인용 특허 : 0

초록

A method and apparatus is provided for generating Walsh codes. A first group of address signals is generated. Subsequently, inversion control signals are generated by logically gating the first group of address signals with a second group of address signals. Finally, a Walsh code is produced by inve

대표청구항

A Walsh code generator, comprising: (a) counter means for generating a first group of address signals; (b) address means, operatively coupled to the counter means, for generating inversion control signals by logically gating the first group of address signals with a second group of address signals;

이 특허를 인용한 특허 (41)

  1. Joo,Pan Yuh, Apparatus and method for generating preamble sequence in a BWA communication system using OFDM.
  2. Lomp, Gary R.; Ozluturk, Faith M.; Kowalski, John, Automatic power control system for a code division multiple access (CDMA) communications system.
  3. Ozluturk, Fatih M.; Jacques, Alexander M.; Lomp, Gary R.; Kowalski, John, Code division multiple access (CDMA) communication system.
  4. Park, Sung Jun; Yi, Seung June; Lee, Young Dae; Chun, Sung Duck, Data transmission method and user equipment for the same.
  5. Kwon, Yeong Hyeon; Han, Seung Hee; Park, Hyun Hwa; Kim, Dong Cheol; Lee, Hyun Woo; Noh, Min Seok, Detection in a communication system using a preamble sequence.
  6. Nguyen Tien Q. ; McDonough John G. ; Chen David ; Tran Howard Thien, Device and method for generating clock signals from a single reference frequency signal and for synchronizing data signals with a generated clock.
  7. Tien Q. Nguyen ; John G. McDonough ; David (Daching) Chen ; Howard (Hau) Thien Tran, Device and method for generating clock signals from a single reference frequency signal and for synchronizing data signals with a generated clock.
  8. McDonough, John G.; Nguyen, Tien Q.; Chen, David (Daching), Device and method for maintaining time synchronous with a network master time.
  9. Copeland Greg ; Tezcan Bertan, Disparity and transition density control system and method.
  10. Eo Ik Soo,KRX ; Yeon Kwang Il,KRX ; Kim Kyung Soo,KRX, Hadamard code generation circuit.
  11. Wang, Xiao-an, Heterogeneous pilots.
  12. von der Embse,Urbain Alfred, Hybrid walsh encoder and decoder for CDMA.
  13. McDonough, John G.; Nguyen, Tien Q., Method and apparatus for controlling system timing with use of a master timer.
  14. Han, Seung Hee; Noh, Min Seok; Kwon, Yeong Hyeon; Park, Hyun Hwa; Lee, Hyun Woo; Kim, Dong Cheol, Method and apparatus for generating and transmitting code sequence in a wireless communication system.
  15. Paolo Emilio Barbano, Method and apparatus for generating families of code signals using multi-scale shuffling.
  16. Zehavi Ephraim (Haifa ILX), Method and apparatus for using Walsh shift keying in a spread spectrum communication system.
  17. Zehavi Ephraim (Haifa ILX) Carter Stephen S. (San Diego CA) Gilhousen Klein S. (Bozeman MT), Method and apparatus for using full spectrum transmitted power in a spread spectrum communication system for tracking in.
  18. McDonough, John G.; Walby, Douglas R.; Abdulla, Karim, Method and apparatus for vector based walsh code bit sequence generation.
  19. Biqi Long JP; Changming Zhou JP, Method and circuit for codes generation.
  20. John G. McDonough, Method of and apparatus for generating data sequences for use in communications.
  21. Park, Sung Jun; Lee, Young Dae; Chun, Sung Duck; Jung, Myung Cheul, Method of transmitting and receiving radio access information in a wireless mobile communications system.
  22. Park, Sung Jun; Lee, Young Dae; Chun, Sung Duck; Jung, Myung Cheul, Method of transmitting and receiving radio access information in a wireless mobile communications system.
  23. Park, Sung Jun; Lee, Young Dae; Chun, Sung Duck; Jung, Myung Cheul, Method of transmitting and receiving radio access information in a wireless mobile communications system.
  24. Kwon, Yeong Hyeon; Han, Seung Hee; Park, Hyun Hwa; Kim, Dong Cheol; Lee, Hyun Woo; Noh, Min Seok, Method of transmitting data in a mobile communication system.
  25. Kwon, Yeong Hyeon; Han, Seung Hee; Park, Hyun Hwa; Kim, Dong Cheol; Lee, Hyun Woo; Noh, Min Seok, Method of transmitting data in a mobile communication system.
  26. McDonough,John G., Methods and apparatus for use in generating data sequences for spread spectrum communications.
  27. McDonough, John G., Methods and apparatus for use in generating spreading sequences for multiple modes of communication.
  28. McDonough, John G., Methods and apparatus for use in performing dot product operations for spread spectrum communications.
  29. McDonough, John G., Methods and apparatus for use in simultaneously generating data sequences for spread spectrum communications.
  30. McDonough, John G., Methods and apparatus for use in simultaneously generating multiple data sequences using a single data access module.
  31. von der Embse,Urbain Alfred, Multi-scale CDMA.
  32. Miller David S. (Escondido CA), Multi-user communication system architecture with distributed receivers.
  33. Miller, David S., Multi-user communication system architecture with distributed transmitters.
  34. von der Embse,Urbain Alfred, Multiple data rate complex Walsh codes for CDMA.
  35. Itou,Kunihiko, Optical information readout apparatus.
  36. Kurabe,Asako; Matsushita,Hirofumi, Orthogonal code generating circuit.
  37. Park Edwin C., Pulse density modulator with improved pulse distribution.
  38. Rasoulian, Hamid; Osella, Stephen A., System and method for developing testing configurations.
  39. Hepler, Edward L., System for generating pseudorandom sequences.
  40. Hepler,Edward L., System for generating pseudorandom sequences.
  41. Naruse Tetsuya,JPX, Walsh code generator, signal transmitting apparatus and signal reception apparatus.
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