Turbo-coded pragmatic trellis coded modulation using coset mapping

This paper presents the application of turbo coding technique combined with bandwidth efficient method known as trellis coded modulation (TCM). A transformation apply to the incoming I-channel and Q-channel symbols allows to use off-the-self B/QPSK turbo decoder without any modifications. A conventional turbo decoder then operates on transformed symbols to estimate the coded bits. The uncoded bits are decoded based on the estimated coded bits and locations of the received symbols.