Abstract
In conventional TCM schemes, for a rate of n bits per channel symbol, a 2/sup n+1/-point constellation is used. It is shown that using constellations with less than 2/sup n+1/-points, one can achieve a considerable coding gain in comparison to the traditional 2/sup n+1/-point constellation. The increase in coding gain is due to a reduction in transmitted signal energy as a result of deleting some high-power signals from the original constellation and reusing of some of the low-power signals instead.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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