Multidimensional, convolutionally coded communication systems

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

1985-04-25

1987-12-15

Atkinson, Charles E.

Excavating

375 27, 375 39, G06F 1110

Patent

active

047138173

ABSTRACT:
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 partitioning 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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