Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Reexamination Certificate
2007-12-18
2007-12-18
Bayard, Emmanuel (Department: 2611)
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
C375S325000
Reexamination Certificate
active
11713851
ABSTRACT:
Apparatus for iterative detection and demodulation of M-ary orthogonal signals (MOK) and signals using Complementary Code Keying (CCK). The apparatus comprises a non-coherent detector that is used during the first iteration and in subsequent iterations uses a coherent detector that is responsive to a soft decoder that is responsive to the detectors. For MOK signals use is made of the first chip, which is known, obviating the need for a pilot signal.
REFERENCES:
patent: 5329547 (1994-07-01), Ling
patent: 5767738 (1998-06-01), Brown et al.
patent: 6366624 (2002-04-01), Balachandran et al.
patent: 6385185 (2002-05-01), Huang
patent: 6567475 (2003-05-01), Dent et al.
patent: 6567481 (2003-05-01), Molnar
patent: 6597923 (2003-07-01), Vanghi et al.
patent: 6798852 (2004-09-01), Khayrallah et al.
M. Khalry et al., “BER of DS/CDMA Using Symbol-Aided Coherent Demodulation over Rican and Rayleigh Fading Channels,” 1998 IEEE, pp. 435-440.
J. Cavers, “An Analysis of Pilot Symbol Assisted Modulation for Rayleigh Fading Channels,” IEEE Transactions on Vehicular Technology, vol. 40, No. 4, Nov. 1991, pp. 686-693.
C. Berrou et al., “Near Shannon Limit Error-Correcting Coding and Decoding: Turbo-Codes,” 1993 IEEE, pp. 1064-1070.
S. Benedetto, et al., “A Soft-Input Soft-Output APP Module for Iterative Decoding of Concatenated Codes,” IEEE Communications Letters, vol. 1, No. 1, Jan. 1997, pp. 22-24.
C. Frank, et al., “Coherent and Noncoherent Decoding Metrics for the IS-95 Reverse Link”.
R. Frank, “Polyphase Complementary Codes,” IEEE Transactions on Information Theory, vol. IT-26, No. 6, Nov. 1980, pp. 641-647.
R. Frank, “Polyphase Codes with Good Nonperiodic Correlation Properties,” IEEE Transactions on Information Theory, Jan. 1963, pp. 43-45.
M. Golay, “Complementary Series,” IEEE Transactions on Information Theory, Apr. 1961, pp. 83-87.
R. Sivaswamy, “Multiphase Complementary Codes,” IEEE Transactions on Information Theory, vol. IT-24, No. 5, Sep. 1978, pp. 546-552.
K. Halford, et al., “Complementary Code Keying for Rake-Based Indoor Wireless Communication,” 1999 IEEE, pp. IV-427-IV-430.
Geraniotis Evaggelos
Khairy Mohamed M.
AT&T Corp.
Bayard Emmanuel
LandOfFree
De-modulation of MOK(M-ary orthogonal modulation) does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with De-modulation of MOK(M-ary orthogonal modulation), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and De-modulation of MOK(M-ary orthogonal modulation) will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3861446