Detector for demodulating a received signal and producing an inf

Pulse or digital communications – Receivers – Particular pulse demodulator or detector

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375340, 375233, 375234, 375348, H04L 2706

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active

055464300

ABSTRACT:
This detector is for demodulating a received signal having been previously encoded by a trellis coded modulator and for producing an information data signal with reduced intersymbol interference. The detector comprises a predictor, a delay line, a feedforward filter, an adder, a subtracter, an updater and a trellis coded modulation estimator. The trellis coded modulation estimator has a feedback filter which is adjusted with respect to the feedforward filter to form a decision-feedback equalizer. Moreover, the delay line has a predetermined length which is adjusted according to an order of the feedforward filter and a depth of the trellis coded modulation estimator to achieve a zero relative delay between an output of the feedforward filter and outputs of the trellis coded modulation estimator.

REFERENCES:
patent: 4905254 (1990-02-01), Bergmans
patent: 4953183 (1990-08-01), Bergmans et al.
patent: 5031195 (1991-07-01), Chevillat et al.
patent: 5052000 (1981-09-01), Wang et al.
patent: 5056117 (1991-10-01), Gitlin et al.
patent: 5157690 (1992-10-01), Buttle
patent: 5159610 (1992-10-01), Eyuboglu et al.
patent: 5263033 (1993-11-01), Seshadri
patent: 5301167 (1994-04-01), Proakis et al.
patent: 5303264 (1994-04-01), Ohsawa
patent: 5321723 (1994-06-01), Mizoguchi
patent: 5414733 (1995-05-01), Turner
Adaptive Equalization, Shahid U. H. Qureshi, Senior Member, IEEE, vol. 73, Sep. 1985.
Adaptive Receiver for Data Transmission over Time-Dispersive Channels, Shahid U. H. Qureshi and Edmunde E. Newhall, IEEE Transactions on Information Theory, Jul. 1973.
Adaptive Channel Memory Truncation for Maximum Likelihood Sequence Estimation, D. D. Falconer and F. R. Magee, Jr., The Bell System Technical Journal, Nov. 1973.
A Maximum-Likelihood Sequence Estimator with Decision-Feedback Equalization, Won U. Lee and F. S. Hill, Jr., IEEE Transactions on Communications, vol. Com-25, No. 9, Sep. 1977.
Adaptive Decision Feedback Equalization with MLSE Based on Predicted Signals, Yonghai Gu, Tho Le-Ngoc and Shixin Cheng, IEEE, 1993.
Digital Communications, John G. Proakis, McGraw-Hill, 1983.
Detection of Coded Modulation Signals on Linear, Severely Distorted Channels Using Decision-Feedback Noise . . . , Vedat Eyuboglu, IEEE Transactions on Comm., vol. 36, No. 4, Apr. 1988.
Decision-Feedback Equalization of Time-Dispersive Channels with Coded Modulation, Kefeng Zhou, John G. Proakis and Fuyun Ling, IEEE, vol. 38, No. 1, Jan. 1990.
Performance of Trellis Codes for a Class of Equalized HF Channels, L. N. Wong and P. J. McLane, IEEE, 1986.
Decoding of Trellis-Encoded Signals in the Presence of Intersymbol Interference and Noise, P. R. Chevillat and E. Eleftheriou, IEEE Transactions on Comm., vol. 37, No. 7, Jul. 1989.
Reduced-State Sequence Estimation for Coded Modulation on Intersymbol . . . , M. V. Eyuboglu and S. U. H. Qureshi, IEEE Journal on Selected Areas in Comm., vol. 7, No. 6, Aug. 1989.

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