General Datacomm, Inc.

William E Abdelsayed

Yuri Goldstein

Paul D Cole

A method is disclosed for determining with only sixty-four distance comparisions the distances between a received eight-dimensional vector comprised of four two-dimensional coordinates and each of sixteen non-overlapping subconstellations. In order to limit the comparisons, each subconstellation is represented by a collection of sixteen representational four-coordinate vectors, with each collection having four groups of vectors of the form

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Wolcott, CT, United States of America

William E Abdelsayed