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특허 상세정보

Method and apparatus for coding a binary signal

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) H04L-003/00   
미국특허분류(USC) 375/39 ; 340/347DD ; 375/59
출원번호 US-0455502 (1983-01-04)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 29  인용 특허 : 4

An input bit sequence is encoded for transmission on a QAM carrier by dividing a scrambled version of the input sequence into groups of N consecutive bits. Each group is then subdivided into first and second subsets of r and r1 bits, where r+r1=N. At least one of the bits in the first subset is applied to a finite state machine (such as a convolution encoder) which is arranged to expand the applied bits by at least one additional bit, in accordance with a prescribed logic arrangement. At least one bit in the second subset is processed similarly but indep...


Apparatus for encoding a sequence of input bits for transmission via a quadrature amplitude modulated carrier signal, comprising: means responsive to first and second subsets of selected bits in each group of N consecutive ones of said input bits for forming first and second expanded versions of the bits in each of said first and second subsets, respectively, each of said expanded versions having at least one more bit than the subset from which it is formed, and means individually responsive to said first and second expanded versions for modulating in-ph...

이 특허를 인용한 특허 피인용횟수: 29

  1. Majima, Taichi. Apparatus and method for transmitting or receiving data. USP2011098023585.
  2. Servilio,Robert; Moy,Carol; DiVincenzo,Christine; Yang,Yongwen. Apparatus, methods and articles of manufacture for dynamic differential delay correction. USP2007087254195.
  3. Omura Jimmy K. (Cuppertino CA) Nightingill Leslie (Palo Alto CA) Sabin Michael J. (Sunnyvale CA). Bit density controller. USP1990104967389.
  4. Wei, Michael; Trainor, William. Burst QAM downhole telemetry system. USP2004066753791.
  5. Saito Yoichi (Kanagawa JPX) Nakamura Yasuhisa (Kanagawa JPX) Aikawa Satoru (Kanagawa JPX) Takanashi Hitoshi (Kanagawa JPX). Coded modulation communication system. USP1991024993046.
  6. Eyuboglu Vedat M. (Boston MA). Coded modulation system with a simplified decoder capable of reducing the effects of channel distortion. USP1987124713829.
  7. Qureshi Shahid U. H. (Natick MA). Coded modulation system with feedback. USP1986124631735.
  8. Bengtson,David; Douglas,Dale Scott. Compensating for load pull in electromagentic signal propagation using adaptive impedance matching. USP2008037343138.
  9. Takahashi Kohji (Sendai JPX) Nakamura Tadashi (Kawasaki JPX) Oide Kenichi (Kawasaki JPX). Decoder employing viterbi decoding method for decoding coded multi-valued signal. USP1997115687164.
  10. Majima, Taichi. Device and method for correcting a data error in communication path. USP2013078494071.
  11. Majima, Taichi. Device and method for correcting a data error in communication path. USP2013078498355.
  12. Bauch, Gerhard. Differential multiple-length transmit and reception diversity. USP2010017649953.
  13. Hulick Timothy P. (Schwenksville PA). Digital amplitude modulator - transmitter. USP1989024804931.
  14. Pao,Hsueh Yuan; Tran,Binh Nien. Digital intermediate frequency QAM modulator using parallel processing. USP2008057379509.
  15. Dennis,Anthony; Yang,Yongwen; Ahmed,Walid; Husseini,Radwan; Bengtson,David. Electromagnetic wave transmitter systems, methods and articles of manufacture. USP2009037502422.
  16. Fischer Michael A. (San Antonio TX) Cox William M. (San Antonio TX) McDougall Floyd H. (San Antonio TX). LAN with interoperative multiple operational capabilities. USP1991045008879.
  17. Cox, William M.; Fischer, Michael A.. Metastable-free digital synchronizer with low phase error. USP1991075034967.
  18. Douglas,Dale Scott. Method and apparatus for compensating amplifier output for temperature and process variations. USP2006127154329.
  19. Ahmed, Walid Khairy Mohamed. Multi-carrier transmitter. USP2012048155237.
  20. Kaku Takashi,JPX ; Okita Ryoji,JPX ; Kawada Noboru,JPX. Multiplex transmission system wherein analog signal is transformed to base band random-transformed and superimposed on. USP1998015710754.
  21. Kaku Takashi,JPX ; Okita Ryoji,JPX ; Kawada Noboru,JPX. Multiplex transmission system wherein analog signal is transformed to base band, random-transformed and superimposed on dispersed signal points in vector signal space. USP2001106298036.
  22. Carmon Iddo (Kfar Saba ILX) Fraenkel Itael (Petah Tikvah ILX) Viner Omri (Hod Hasharon ILX) Cohen Ronny (Ramat-Hasharon ILX). Parallel operating CPU core and DSP module for executing sequence of vector DSP code instructions to generate decoded co. USP1997045625828.
  23. Dirr Josef (Neufahrner Str. 5 D81679 Munich DEX). Process for encoding and transmitting information. USP1996125587797.
  24. Flynn Jeffrey C. (Irvine CA). Programmable state machines connectable in a reconfiguration switching network for performing real-time data processing. USP1991014984192.
  25. Simon, Marvin K.; Divsalar, Dariush. Reduced complexity coding system using iterative decoding. USP2010047693235.
  26. Majima, Taichi. Scrambler, scramble processing method, and program. USP2013038396219.
  27. Majima, Taichi. Scrambler, scramble processing method, and program. USP2013018363826.
  28. Quilligan,Gerard T.; Nagle,Pierce J.; Heaney,Eugene P.. Sub-ranging digital to analog converter for radiofrequency amplification. USP2007027183958.
  29. Li,Chin; Bourke,Donal; Steckler,Steven; Carey,Eoin. Techniques for biasing a radio frequency digital to analog converter. USP2008017317412.