Multidimensional, convolutionally coded communication systems

Details Multidimensional, convolutionally coded communication systems Multidimensional, convolutionally coded communication systems

G - Physics

06

F

325/3

G06F 11/10 (2006.01) H03M 13/25 (2006.01) H04L 1/00 (2006.01) H04L 27/34 (2006.01)

Patent

CA 1248182

ABSTRACT OF THE DISCLOSURE A family of multi-dimensional convolutionally coded modulation systems achieves enlarged minimum distance between possible sequences of signal points, reduced number of error events with the minimum distance, acceptable peak-to-average power ratio, reduced number of signal points in each constituent two-dimensional constellation immunity to rapid carrier phase changes, and reduced complexity, resulting in a reduced error probability when maximum likelihood decoding is used. These advantages are achieved by the construction and by the parti- tioning into subsets of the multi-dimensional constellation, by the design of convolutional codes using those multi-dimensional subsets, by using a bit converter and a block encoder to convert a multi-dimensional constellation mapping into multiple two- dimensional constellations mappings, and by a simplified decoding technique.

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