Iterative-structure digital signal reception device, and module and method therefor

Patent 6108388 Issued on August 22, 2000. Estimated Expiration Date:

December 3, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

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Inventors

Assignee

Application

No. 894207 filed on 12/03/1997

US Classes:

375/348, Intersymbol interference375/341Maximum likelihood decoder or viterbi decoder

Examiners

Primary: Bocure, Tesfaldet

Attorney, Agent or Firm

Kinney & Lange, P.A.

Foreign Patent References

0 511 141 A1 EP. 10/13/1992
0 524 597 A1 EP. 01/13/1993
WO 91/06165 WO. 05/13/1991

International Classes

H03D 001/06
H04L 027/06

Foreign Application Priority Data

1995-02-07 FR

Abstract

The invention relates to a device for the reception of signals formed by a series of digital symbols corresponding to the convolutive encoding of items of source digital data comprising p cascade-connected detection and decoding modules M1 to Mp, p being greater than or equal to 2, each of said modules Mi including: (a) inter-symbol interference correction means supplied by a symbol input Ri and delivering estimated symbols Ai,1 with weighted values, (b) means for the decoding of said estimated symbols Ai,1, performing operations symmetrical to said convolutive encoding and delivering decoded symbols Ai,2 with weighted values, and (c) means for the computation of an item of correction information Zi+1 from said estimated symbol Ai,1 and said decoded symbol Ai,2, (d) said means for the correction of each of said modules Mi, except for the first module M1, taking account of at least one item of correction information Zi determined by the previous module Mi-1.

Other References

Claude Berrou, et al., ICC'93 Geneva, IEEE International Conference on Communications '93, Technical Program Conference Record, vol. 2/3, May 23-26, 1993, Geneva, Switzerland, pp. 1065-1070
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J.W.M. Bergmans et al., On the Use of Decision Feedback for Simplifying the Viterbi Detector, Philips Journal of Research, vol. 42, No. 4, 1987, pp. 428-399
Jianjun Wu, et al., A Channel Model and A Novel Adaptive Equalizer for Mobile Radio Communications, IEEE in Houston, Globecom '93, IEE Global Telecommunications Conference, Nov. 29-Dec. 2, 1993, vol. 1 of 4, pp. 98-102
Peter Jung, et al., VLSI Implementation of Soft Output Viterbi Equalizers For Mobile Radio Applications, Vehicular Technology Society 42^nd VTS Conference Frontiers of Technology, vol. 2 of 2, May 10-13, 1992, Denver Colorado, pp. 577-58