Pulse or digital communications – Receivers – Angle modulation
Patent
1995-12-01
1999-01-19
Tse, Young T.
Pulse or digital communications
Receivers
Angle modulation
375208, 375340, H04L 2706
Patent
active
058621865
ABSTRACT:
A method and system are provided for the reception of a biorthogonally-modulated RF signal in a simplex free-space system. The method is found to substantially diminish the coupling between the error probabilities of those bits associated with signal selection and those bits associated with signal polarity in prior art biorthogonal receivers. By decoupling the error probabilities, the polarity information error rate is reduced and consequently the overall error rate of the receiver system is improved. The receiver system preserves soft-decision reliability information for the signal selection bits in a manner so that the information is insensitive to uncompensated amplitude fluctuations in the received signal. The method and system are applicable to all known biorthogonal signal sets but requires a specific interleaving structure in the corresponding transmitter system.
REFERENCES:
patent: 5191576 (1993-03-01), Pommier et al.
patent: 5228025 (1993-07-01), Le Floch et al.
patent: 5274629 (1993-12-01), Helard et al.
patent: 5452322 (1995-09-01), Lauer
patent: 5469452 (1995-11-01), Zehavi
patent: 5524027 (1996-06-01), Huisken
patent: 5546420 (1996-08-01), Seshadai et al.
patent: 5592471 (1997-01-01), Briskman
patent: 5615227 (1997-03-01), Schumacher, Jr. et al.
"A New Multilevel Coding Method Using Error Correcting Codes," IEEE Transactions on Information Theory, vol. 23, No. 3, pp. 371-377, May, 1977.
"Multilevel Codes Based on Partitioning", IEEE Transactions on Information Theory, vol. 35, No. 1, pp. 87-98; Jan. 1989 By G. J. Pottie and D. P. Taylor.
"Multistage Coding and Decoding for a M-PSK System," IEEE Globecom '90 Dec. 2-5, 1990, San Diego, CA, pp. 698-703, By T. Woerz and J. Hagenauer.
"Multilevel Trellis Coded Modulations for the Rayleigh Fading Channel", IEEE Transactions on Communications, vol. 41, No. 9, pp. 1300-1310, Sep., 1993, By N. Seshadri and C.E.W. Sundberg.
"Performance Analysis of a Multilevel Coded Modulation System," IEEE Transactions on Communications, vol. 42, No. 2/3/4, pp. 299-312, Feb./Mar./ Apr. 1994, By Y. Kofman, E. Zehavi, adn S. Shamai.
"Highly Reliable Multilevel Channel Coding System using Binary Convolution Codes", Electronic Letters, vol. 23, No. 18, pp. 939-941, Aug. 1987, By K. Yamaguchi and H. Imai.
Rhoa Joseph A.
Tse Young T.
LandOfFree
RF simplex spread spectrum receiver and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with RF simplex spread spectrum receiver and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and RF simplex spread spectrum receiver and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1252766