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Method, apparatus and system for decoding a non-coherently demodulated signal 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04B-001/69
  • H04B-001/707
  • H04J-013/04
출원번호 US-0313974 (1994-09-28)
발명자 / 주소
  • Frank Colin D. (Schaumburg IL)
출원인 / 주소
  • Motorola, Inc. (Schaumburg IL 02)
인용정보 피인용 횟수 : 43  인용 특허 : 0

초록

Non-coherently demodulated signals are efficiently decoded using a non-complex system that is independent of the fading statistics of the channel. A symbol metric calculator (406) receives a signal-to-noise ratio (404) and symbols from a non-coherently demodulated signal (402) to efficiently produce

대표청구항

A system having an apparatus for efficiently decoding a received signal, wherein the received signal is binary encoded, bit interleaved, and modulated using M-ary modulation, where M equals 2k and k is a number of data symbols, the receiver system comprising: a) a M-ary demodulator device for produc

이 특허를 인용한 특허 (43)

  1. Cleveland, Joseph Robert, Apparatus and method for M-ary demodulation in a digital communication system.
  2. Lipa Robert A., Apparatus and method for determining transmitted modulation symbols.
  3. Kim,Noh Sun; Moon,Yong Suk; Kim,Hun Kee; Yoon,Jae Seung, Apparatus and method for transmitting and receiving data in a CDMA mobile communication system.
  4. Havish Koorapaty ; Ali S. Khayrallah, Apparatus and methods for allocation of high-penetration services in wireless communications systems.
  5. Khayrallah Ali S. ; Irvin David R., Apparatus and methods for assigning spectral and non-spectral resource charges in wireless communications systems.
  6. Koorapaty, Havish; Ramesh, Rajaram, Apparatus and methods for high-penetration random access in wireless communications systems.
  7. Rydbeck Nils ; Molnar Barbara ; Guey Jiann-Ching ; Khayrallah Ali ; Koilpillai R. David, Apparatus and methods for providing high-penetration messaging in wireless communications systems.
  8. Itoh,Katsutoshi, Channel quality estimation method and channel quality estimation apparatus.
  9. Rao,Prasada; Patait,Abhijit, Combining direct interference estimation and decoder metrics for improved measurement for AMR mode adaptation in GSM systems.
  10. Malm, Peter, Compression based on channel characteristics.
  11. He, Ning; ?stman, Thomas, Correction of received signal and interference estimates.
  12. Huang,Wensheng; Toy,Raymond; Malm,Peter, Data compression with incremental redundancy.
  13. Nishimura Osami,JPX, Demodulation circuit including error correction.
  14. Usui Takashi,JPX, Demodulation method and demodulation apparatus.
  15. Furon,Teddy; Duhamel,Pierre, Digital data watermarking system using novel watermark insertion and detection methods.
  16. Meyer Raimund,DEX ; Muller Stefan,DEX ; Gerstacker Wolfgang,DEX ; Huber Johannes,DEX, Digital transmission system with a trellis-based, reduced-state estimation method.
  17. Sanderford ; Jr. H. Britton ; Rouquette Robert E. ; Davis Robert J., Direct sequence frequency ambiguity resolving receiver.
  18. Chen, Tao; Tiedemann, Jr., Edward G., Method and apparatus for coherently combining power control commands to initialize communication.
  19. Miyaji Satoshi,JPX ; Matsumoto Shuichi,JPX, Method and apparatus for deciding optimum orthogonal transform mode.
  20. Xu Hua ; Ling Fuyun, Method and apparatus for decoding a coded signal in a communication system.
  21. Schaffner Terry Michael, Method and apparatus for decoding an encoded signal.
  22. Young Jo Lee KR; Hyung Uk Kwon KR; Young Sik Youn KR; Nam Suk Kim KR; Young Woo Yun KR, Method and apparatus for estimating power in CDMA system.
  23. Bruckert Eugene J. ; Sexton Thomas A. ; Love Robert T. ; Bayer William R., Method and apparatus for power control in a communication system.
  24. Zehavi Ephraim (Haifa ILX), Method and apparatus for using Walsh shift keying in a spread spectrum communication system.
  25. Kowalewski,Frank, Method and device for estimating memory-enabled transmission channels.
  26. Kaiser Stefan,DEX ; Fazel Khaled,DEX, Method of simultaneous radio transmission of digital data between a plurality of subscriber stations and a base station.
  27. Hiroshi Suzuki JP, Multi-station transmission method and receiver for inverse transforming two pseudo-orthogonal transmission sequences used for metric calculation and base station selection based thereon.
  28. Miller David S. (Escondido CA), Multi-user communication system architecture with distributed receivers.
  29. Miller, David S., Multi-user communication system architecture with distributed transmitters.
  30. Hepler, Edward L.; Starsinic, Michael F., Pipeline architecture for maximum a posteriori (MAP) decoders.
  31. Hepler, Edward L.; Starsinic, Michael F., Pipeline architecture for maximum a posteriori (MAP) decoders.
  32. Hepler,Edward L.; Starsinic,Michael F., Pipeline architecture for maximum a posteriori (MAP) decoders.
  33. Cameron, Kelly Brian; Shen, Ba-Zhong; Tran, Hau Thien, Rate control adaptable communications.
  34. Hironori Mizuguchi JP; Shousei Yoshida JP; Akihisa Ushirokawa JP, S/N measuring circuit and method, transmitting electric power control apparatus and digital communicating system.
  35. Lin, Che-Li, Scaling apparatus of a receiver.
  36. Yamamura Hideya,JPX, Spread spectrum communication system.
  37. Amde, Manish; Cruz, Rene L.; Yun, Kenneth, Spread-spectrum receiver and reception method.
  38. Cao, Yu; Maaref, Amine; Baligh, Mohammadhadi; Ma, Jianglei, System and method for user equipment cooperation.
  39. Cao, Yu; Maaref, Amine; Baligh, Mohammadhadi; Ma, Jianglei, System and method for user equipment cooperation.
  40. Malette,Alexandre; Oliver,John P., Unbiased signal to interference ratio in wireless communications devices and methods therefor.
  41. Mansour, Nagi A., Walsh code expansion in wireless communications systems.
  42. Li,Jian; Liu,Jianhua, Wireless LAN compatible multi-input multi-output system.
  43. Rydbeck Nils ; Molnar Barbara ; Guey Jiann-Ching ; Khayrallah Ali ; Koilpillai R. David, Wireless communications systems with standard and robust services and methods of operation thereof.
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