Pulse or digital communications – Receivers – Interference or noise reduction
Patent
1997-07-29
2000-05-16
Chin, Stephen
Pulse or digital communications
Receivers
Interference or noise reduction
H04R 110
Patent
active
060647035
ABSTRACT:
The present invention relates to a receiver for high-speed numerical transmissions through Rayleigh channels noisy and dispersive in time and frequency in which an accurate estimate of the channel response is combined in an optimal manner with the received data sequence detection procedure. Specifically the a posteriori probability of the Markov chain of the states of the channel with intersymbolic interference are calculated recursively from the data received and from the updated channel estimate. The a posteriori probabilities calculated are used in turn by a Kalman estimator to record the channel variations. On the basis of the sequence of the calculated a posteriori probabilities the detection is then calculated symbol by symbol with the highest a posteriori probability having a small decision delay.
REFERENCES:
patent: 5265121 (1993-11-01), Stewart
patent: 5436928 (1995-07-01), Fukuawa et al.
Digital Communications, 3.sup.rd Ed., John G. Proakis, pp. 254-257 and 583-601.
Data Communications Principles, Richard D. Gitlin et al, "Automatic and Adaptive Equalization", pp. 517-567.
Introduction to Random Signals and Applied Kalman Filtering, 3.sup.rd Ed. Brown et al, pp. 214-248.
IEEE Transactions on Comm, vol. 42, No. 2/3/4, Feb. '94, Kubo et al, "An Adaptive Maximum-Likelihood Sequence . . . ", pp. 1872-1880.
IEEE Transactions on Comm, vol. 43, No. 2/3/5, 1995, Raheli et al, "Per-Survivor Processing: A General Approach . . . ", pp. 354-364.
Avni Morgul et al, "Decision Directed to Channel Parameter . . . ", Signal Processing Eur. Journal, vol. 25, No. 3, Dec. '91,p. 307-318.
Hoeher, P., "TCM on Frequency-Selective Fading Channels . . . ", Commun. Conn. the Future, Dec. 1990, IEEE, vol. 1, pp. 376-381.
Lodge et al, "Maxmium Likelihood Sequence Estimation of CPM . . . ", IEEE Trans. on Com. vol. 38, No. 6, Jun. 1, 1990, pp. 787-794.
Hoeher, P., "Advances in Soft-Output Decoding", Proc. Glob. Comm. Conf., Vo. 2, Nov. 29, 1993 IEEE, pp. 793-797.
Baccarelli Enzo
Cusani Roberto
Chin Stephen
Jiang Lenny
Telital S.p.A.
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