Pulse or digital communications – Repeaters – Testing
Patent
1985-08-01
1987-04-21
Safourek, Benedict V.
Pulse or digital communications
Repeaters
Testing
371 43, 375 58, H04L 2702
Patent
active
046602143
ABSTRACT:
A signal structure for high speed Trellis coded data communications selects each signal point in the structure to attain a low probability of error in the presence of both additive noise and multiplicative noise. Viterbi decoding is modified to take account of the multiplicative noise energy content of the received signal.
REFERENCES:
patent: 3887768 (1975-06-01), Forney, Jr. et al.
patent: 3955141 (1976-05-01), Lyon et al.
patent: 3988539 (1976-10-01), Motley et al.
patent: 4271527 (1981-06-01), Armstrong
patent: 4347616 (1982-08-01), Murakami
patent: 4439863 (1984-03-01), Bellamy
patent: 4464767 (1984-08-01), Bremer
patent: 4493082 (1985-01-01), Cumberton et al.
R. W. Lucky, "Digital Phasi and Amplitude Modulated Transmission Systems", Ph.D. Thesis, Purdue Univ., 1961.
Schwartz, Information Transmission Moduation and Noise, (3d ed., 1980), pp. 226-235.
Proakes, "Modulation and Demodulation for the Additive Gaussian Noise Channel", Digital Communications, 1983, pp. 182-190.
Gottfried Ungerboeck, "Channel Coding with Multilevel/Phase Signals," IEEE Transactions on Information Theory, vol. IT-28, No. 1, pp. 55-67, Jan. 1982.
"Draft Recommendation for 14,000 Bits Per Second Modem," USA, Temporary Document D177, Oct., 1983.
"Statistical Multiplexers from Paradyne" (Advertisement, at least as early as Mar. 13, 1985).
Gerwen, et al, "Microprocessor Implementation of High-Speed Data Modems38 , IEEE Transactions on Communications, vol. COM-25, No. 2, Feb., pp. 238-249.
Koya, et al, "High Speed Data Modem Using Digital Signal Processor", International Communications Conference, 1981, pp. 14.7.1-14.7.5.
A. Digeon, "On Improving Bit Error Probability of QPSK and 4-Level Amplitude Modulation Systems by Convolutional Coding", IEEE Transactions on Communications, vol. COM-25, No. 10, Oct., 1977, pp. 1238-9-1239.
Lucky, et al, "In the Optimum Performance Of N-ary Systems Having Two Degrees of Freedom", IRE Transactions on Communications Systems, Jun., 1962, pp. 185-192.
Kernighan, et al, "Heuristic Solution of a Signal Design Optimization Problem", The Bell System Technical Journal, Sep., 1973, vol. 52, No. 7, pp. 1144-1159.
Foschini, et al, "On the Selection of a Two-Dimensional Signal Constellation in the Presence of Phase Jitter and Gaussian Noise", The Bell System Technical Journal, vol. 52, No. 6, Jul.-Aug., 1973, pp. 927-965.
Foschini, et al, "Optimization of Two-Dimensional Signal Constellations in the Presence of Gaussian Noise", IEEE Transactions on Communications, vol. COM-22, No. 1, Jan., 1974, pp. 28-38.
Holsinger Jerry L.
Pahlavan Kaveh
Infinet Inc.
Safourek Benedict V.
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