Trellis shaping for modulation systems

Details Trellis shaping for modulation systems Trellis shaping for modulation systems

1989-10-13

1992-09-22

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

371 43, 375 60, H04L 512, H04L 2549

Patent

active

051503816

ABSTRACT:
A digital data sequence is mapped into a signal point sequence for transmission, by selecting the signal point sequence from a subset of all possible signal point sequences based on the digital data sequence, all possible signal point sequences in the subset lying in a fundamental region of a trellis code, the fundamental region being other than a simple Cartesian product of finite-dimensional regions. In another aspect, a digital data sequence is mapped into a sequence of signal points for transmission, by specifying a class of possible sequences based on the digital data, and selecting the signal point sequence from the class, the selection being based on the respective average powers of the possible sequences of the class, the selection being based on not only a fixed-length block of the digital data.

REFERENCES:
patent: 4581601 (1986-04-01), Calderbank et al.
patent: 4586182 (1986-04-01), Gallager
patent: 4755998 (1988-07-01), Gallager
patent: 4807253 (1989-02-01), Hagenauer et al.
patent: 4873701 (1989-10-01), Tretter
patent: 4888779 (1989-12-01), Karabed et al.
patent: 4894844 (1990-01-01), Forney, Jr.
patent: 4959842 (1990-09-01), Forney, Jr.
Calderbank et al., "An Eight-Dimensional Trellis Code", Proceedings of the IEEE, May 1986, pp. 757-759.
Forney, "Coset Codes--Part I: Introduction and Geometrical Classification", IEEE Transactions on Information Theory, vol. 34, No. 5, Sep. 1988, pp. 1123-1151.
Ungerboeck, "Channel Coding with Multilevel/Phase Signals", IEEE Trans. on Information Theory, vol. IT-28, No. 1, Jan. 1982, pp. 55-67.
Conway et al., "A Fast Encoding Method for Lattice Codes and Quantizers", IEEE Trans. on Information Theory, vol. IT-29, No. 6, Nov. 1983, pp. 820-824.
Calderbank et al., "New Trellis Codes Based on Lattices and Cosets", IEEE Trans. on Information Theory, vol. IT-33, No. 2, Mar. 1987, pp. 177-195.
Wei, "Trellis-Coded Modulation with Multidimensional Constellations", IEEE Trans. on Information Theory, vol. IT-33, No. 4, Jul. 1987, pp. 483-501.
Calderbank et al., "Nonequiprobable Signaling on the Gaussian Channel", IEEE Trans. on Information Theory, vol. 36, No. 4, Jul. 1990, pp. 726-740.
Forney, "The Viterbi Algorithm", Proceedings of the IEEE, vol. 61, No. 3, Mar. 1973, pp. 268-278.
Marcellin et al., "Trellis Coded Quantization of Memoryless and Gauss-Markov Sources", pp. 1-46.
Forney et al., "Multidimensional Constellations--Part I: Introduction, Figures of Merit, and Generalized Cross Constellations", IEEE Journal on Selected Areas in Communications, vol. 7, No. 6, Aug. 1989, pp. 877-892.
Calderbank et al., "An Eight-Dimensional Trellis Code", Proceedings of the IEEE, May 1986.
Forney et al., "Efficient Modulation for Band-Limited Channels", IEEE Journal on Selected Areas in Communications, vol. SAC-2, No. 5, Sep. 1984, pp. 632-647.
Sloane, "Tables of Sphere Packings and Spherical Codes", IEEE Trans. on Information Theory, vol. IT-27, No. 3, May 1981, pp. 327-338.
Eyuboglu et al., "Trellis Precoding: Combined Coding, Precoding and Shaping for Intersymbol Interference Channels", IEEE Trans. on Information Theory, Jun. 1990.
Forney, "Convolutional Codes I: Algebraic Structure", IEEE Trans. on Information Theory, vol. IT-16, No. 6, Nov. 1970, pp. 720-738.
Forney, "Structural Analysis of Convolutional Codes Via Dual Codes", IEEE Trans. on Information Theory, vol. IT-19, No. 4, Jul. 1973, pp. 512-518.
Conway et al., "A Lower Bound on the Average Error of Vector Quantizers", IEEE Trans. on Information Theory, vol. IT-31, No. 1, Jan. 1985, pp. 106-109.
Forney et al., "Multidimensional Constellations II: Voronoi Constellations", Mar. 1988. pp. 1-64.2.

Affiliated with

Also associated with

Rating

Trellis shaping for modulation systems does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Trellis shaping for modulation systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Trellis shaping for modulation systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1075387