The encoding / brief using the qam modulation - 16 coded speed in blocks a multilevel

摘要

The invention proposes a diagram of a coded modulation block using techniques of partitioning multi - levels, this diagram is transparent to the phase ambiguities of + - vpi / 2 and vpi, thanks to a differential coding and mapping judicious, applicable to a qam modulation - 16, and having a gain of the theoretical optimal coding for the efficiency of the code. & br / the decoder associated with this circuit uses the algorithm of wagner, which presupposes a very low complexity compared to the algorithms viterbi or reed solomon -