CODING AND MODULATION APPARATUS USING NON-UNIFORM CONSTELLATION
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United States of America Patent
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app pub date -
Jul 7, 2014
filing date -
Jul 5, 2013
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Abandoned
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Abstract
A coding and modulation apparatus and method are presented. The apparatus comprises an encoder that encodes input data into cell words, and a modulator that modulates said cell words into constellation values of a non-uniform constellation. The modulator is configured to use, based on the total number M of constellation points of the constellation and the code rate, a non-uniform constellation from one or several groups of constellations each comprising one or more constellations.
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