Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Patent
1992-03-31
1995-12-26
Chin, Stephen
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
375260, 375347, 455 61, H04B 702, H04B 706
Patent
active
054794480
ABSTRACT:
A method and apparatus providing antenna diversity is disclosed. A set of bits of a digital signal are used to generate a codeword of N symbols. Codewords are provided according to a channel code having a minimum Hamming distance, d.sub.min, where 2.ltoreq.d.sub.m .ltoreq.N. N signals representing N symbols of a codeword are transmitted with N different antennas. The N transmitted signals are received and isolated. A sequence of N received symbols is formed from the isolated symbols and compared with one or more valid codewords to associate the sequence with a codeword. A set of bits based on a codeword associated with the received sequence is generated.
REFERENCES:
patent: 3267380 (1966-04-01), Adams
patent: 3348150 (1967-10-01), Atal et al.
patent: 3662268 (1972-05-01), Gans et al.
patent: 3717814 (1973-02-01), Gans
patent: 4057758 (1977-11-01), Hattori et al.
patent: 4280222 (1981-07-01), Flower
patent: 4383332 (1983-05-01), Glance et al.
patent: 4490830 (1984-12-01), Kai et al.
patent: 4513412 (1985-04-01), Cox
patent: 4881241 (1989-11-01), Pommier et al.
patent: 5134633 (1992-07-01), Werner
patent: 5170413 (1992-12-01), Hen et al.
patent: 5203018 (1993-04-01), Hirose
patent: 5305353 (1994-04-01), Weeraekody
P. S. Henry and B. S. Glance "A New Approach to High-Capacity Digital Mobile Radio", The Bell System Technical Journal, vol. 60, No. 8, 1891-1904 (1981).
G. Ungerboeck "Channel Coding with Multilevel/Phade Signals", IEEE Transactions on Information Theory, vol. IT-28, No. 1, 55-67 (Jan. 1982).
S. G. Wilson and Y. S. Leung "Trellis-Coded Phase Modulation on Rayleigh Channels", IEEE, 0739-0743 (1987).
E. Biglieri et al. "Introduction to Trellis-Coded Modulation with Applications", Macmillan Publishing Company (1991).
W. C. Jakes, Jr. "Microwave Mobile Communications" John Wiley & Sons (1974).
S. Nanda and O-C. Yue "Variable Partition Duplexing for Wireless Communications", Globecom '91, 1147-1153 (1991).
Shu Lin et al. "Error Control Coding", Chapter 1 and 3 1983.
AT&T Corp.
Chin Stephen
Ghebretinsae T.
Restaino Thomas A.
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