Method and apparatus for decoding lattice codes and...

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

Reexamination Certificate

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C375S286000, C375S262000, C714S794000, C714S810000

Reexamination Certificate

active

07023936

ABSTRACT:
Some embodiments of the present invention include a decoding system in which the decoding system uses iterative decoding techniques to decode signals encoded with lattice codes and/or multilevel coset codes. The decoding techniciucs according to some embodiments of the invention may be less complex than some decoding techniciues such as maximum likelihood decoding techniciues. Other embodiments of the prevent invention are described and claims.

REFERENCES:
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patent: 6145114 (2000-11-01), Crozier et al.
patent: 0237186 (1987-09-01), None
Sklar, “Digital Communications Fundamentals and Applications”, published by Prentice Hall PTR, year 2000, pp. 347-248, 395-396.
Banihashemi, A.H., et al., “Tanner Graphs for Group Block Codes and Lattices: Construction and Complexity”,IEEE Trans. On Information Theory, vol. 47,No. 2, pp. 822-834, (Feb., 2001).
Forney, G.D., “Codes on Graphs: Normal Realizations”,IEEE Trans. On Information Theory, vol. 47, No. 2, pp. 520-548, (Feb., 2001).
Forney, G.D., “Coset Codes—Part I: Introduction and Geometrical Classification”,IEEE Trans. On Information Theory, vol. 34, No. 5, pp. 1123-1151, (Sep., 1988).
Forney, G.D., et al., “Multidimensional Constellations—Part I: Introduction, Figures of Merit, and Generalized Cross Constellations”,IEEE Journal of Selected Areas in Communications, vol. 7, No. 6, pp. 877-892, (Aug., 1989).
Fazel, K., et al., “Combined Multilevel Turbo-Code with 8PSK Modulation”,IEEE Global Telecommunications COnference, (Nov. 13, 1995), pp. 649-653.
Martin, P. A., et al., “On Iterative Multistage Decoding”,2nd International Symposium on Turbo Codes&Related Topics, Brest, France, (Sep. 4, 2000), pp. 407-410.
Wachsmann, U., et al., “Multilevel Codes: Theoretical Concepts and Practical Design Rules”,IEEE Transactions on Information Theory, 45, (Jul. 5, 1999), pp. 1361-1391.
“Written Opinion in corresponding PCT Application No. PCT/IB02/04491”, (Feb. 28, 2005), 5 pgs.

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