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Digital modulation system using extended code set

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04B-001/69
출원번호 US-0064188 (1998-04-22)
발명자 / 주소
  • Richard D. J. van Nee NL
출원인 / 주소
  • Agere Systems Guardian Corp
대리인 / 주소
    John A. Ligon
인용정보 피인용 횟수 : 39  인용 특허 : 16

초록

A digital (de)modulation system uses a larger code set of M codes for N length codes, where M>N, to provide an increased data rate while maintaining the coding gain. For example, the system can use 16 different codes each having a length of 11 chips in a code set while the conventional M-ary keying

대표청구항

1. A method for modulating information bits over a radio frequency communication channel, comprising:grouping a number of information bits, based on the grouping, selecting a code having N chips from a code set that includes M codes, wherein M>N, and wherein the code set is derived from a complement

이 특허에 인용된 특허 (16)

  1. Dent Paul W. (Stehag SEX), CDMA subtractive demodulation.
  2. Dent Paul W. (Stehag SEX), CDMA subtractive demodulation.
  3. Gutleber Frank S. (24 Carriage House La. Little Silver NJ 07739), Code expansion generator.
  4. Gilhousen Klein S. (San Diego CA) Padovani Roberto (San Diego CA) Wheatly ; III Charles E. (Del Mar CA), Diversity receiver in a CDMA cellular telephone system.
  5. Ino Hiroyuki,JPX, Encoding method, encoding apparatus, decoding method, decoding apparatus, and recording medium.
  6. Dent Paul W. (Stehag SEX), Fast walsh transform processor.
  7. Dent Paul W. (Stehag NC SEX) Haartsen Jaap C. (Durham NC), Maximum search circuit.
  8. Dent Paul W. (Stehag NC SEX) Bottomley Gregory E. (Cary NC), Multiple access coding for radio communications.
  9. Reed David E., Sampled amplitude read/write channel employing a sub-baud rate write clock.
  10. DeRosa Louis A. (Bloomfield NJ) Rogoff Mortimer (Nutley NJ), Secure single sideband communication system using modulated noise subcarrier.
  11. Shiba Takashi,JPX ; Yuhara Akitsuna,JPX ; Yamada Yoshihiro,JPX ; Ohta Yasuhiro,JPX, Spread spectrum communication device and communication system.
  12. Andren Carl F. (Indialantic FL) Olaker David A. (Palm Bay FL), Spread spectrum correlator for recovering CCSK data from a PN spread MSK waveform.
  13. Gilhousen Klein S. (San Diego CA) Jacobs Irwin M. (La Jolla CA) Weaver ; Jr. Lindsay A. (San Diego CA), Spread spectrum multiple access communication system using satellite or terrestrial repeaters.
  14. Izumi Michihiro (Kawasaki JPX), Spread-spectrum communication apparatus.
  15. Gilhousen Klein S. (San Diego CA) Jacobs Irwin M. (La Jolla CA) Padovani Roberto (San Diego CA) Weaver ; Jr. Lindsay A. (San Diego CA) Wheatley ; III Charles E. (Del Mar CA) Viterbi Andrew J. (La Jol, System and method for generating signal waveforms in a CDMA cellular telephone system.
  16. Kamerman Adriaan,NLX ; van Driest Hans,NLX, System and method for improved spread spectrum signal detection.

이 특허를 인용한 특허 (39)

  1. Fan, Pingzhi; Suehiro, Naoki; Kuroyanagi, Noriyoshi, Adaptive interference-free spread-spectrum system employing binary code sequence sets with zero correlation zone properties.
  2. Rudolf, Marian; Jechoux, Bruno, Channel estimation by phase multiplexed complementary sequences.
  3. Tzannes, Marcos C., DMT symbol repetition in the presence of impulse noise.
  4. Tzannes, Marcos C., DMT symbol repetition in the presence of impulse noise.
  5. Lablans, Peter, Data encryption and decryption with a key by an N-state inverter modified switching function.
  6. Delabbaye,Jean Yves; Couderette,Andr챕, Device for the analysis of electromagnetic signals.
  7. Lu, Jin; Moudgill, Mayan, Fast transmitter based on table lookup.
  8. Lakkis, Ismail, Frame format for millimeter-wave systems.
  9. Lablans, Peter, Generation and detection of non-binary digital sequences.
  10. Lablans, Peter, Generation and detection of non-binary digital sequences.
  11. Lakkis, Ismail, Golay-code generation.
  12. Lakkis, Ismail, Golay-code generation.
  13. Snell,James Leroy; Andren,Carl F.; Lucas,Leonard Victor, High data spread spectrum transceiver and associated methods.
  14. Smith,Gary, Image reject circuit using sigma-delta conversion.
  15. Lablans, Peter, Implementing logic functions with non-magnitude based physical phenomena.
  16. Lablans, Peter, Implementing logic functions with non-magnitude based physical phenomena.
  17. Tzannes, Marcos C., Impulse noise protection during initialization.
  18. Li, Daoben, Large area wireless CDMA system and method.
  19. van Nee, D. J. Richard, M-ary orthogonal keying system.
  20. van Nee, D. J. Richard, M-ary orthogonal keying system.
  21. Bae, Eun Hae, Method and apparatus for forward and reverse power control in mobile telecommunication system.
  22. Lakkis, Ismail, Method and apparatus for generation and usage of extended golay codes.
  23. Lakkis, Ismail, Method and apparatus for single carrier and OFDM sub-block transmission.
  24. Lakkis, Ismail, Method and apparatus for single carrier spreading.
  25. Fuente, Vicente Diaz, Method, transmitter and receiver for spread-spectrum digital communication by Golay complementary sequence.
  26. Diaz Fuente, Vicente, Method, transmitter and receiver for spread-spectrum digital communication by Golay complementary sequence modulation.
  27. Lablans, Peter, Methods and apparatus in alternate finite field based coders and decoders.
  28. Lakkis, Ismail, Millimeter wave beaconing with directional antennas.
  29. Lakkis, Ismail, Multi-mode processor.
  30. Lablans, Peter, Multi-value digital calculating circuits, including multipliers.
  31. Lablans, Peter, N-state ripple adder scheme coding with corresponding n-state ripple adder scheme decoding.
  32. Kasami,Hideo; Matsuoka,Hidehiro; Aoki,Tsuguhide; Sato,Kazumi, Receiver and wireless LAN apparatus in which a received signal is correlated to a reference symbol.
  33. Lablans,Peter, Single and composite binary and multi-valued logic functions from gates and inverters.
  34. Lablans,Peter, Single and composite binary and multi-valued logic functions from gates and inverters.
  35. Lablans, Peter, Ternary and higher multi-value digital scramblers/descramblers.
  36. Lablans,Peter, Ternary and higher multi-value digital scramblers/descramblers.
  37. Lablans,Peter, Ternary and higher multi-value digital scramblers/descramblers.
  38. Lablans, Peter, Ternary and multi-value digital signal scramblers, decramblers and sequence generators.
  39. Lablans, Peter, Ternary and multi-value digital signal scramblers, descramblers and sequence generators.
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