On coded and interleaved noncoherent multiple symbol detected MPSK

The performance of multiple symbol noncoherent detection of MPSK combined w ith coding and interleaving is examined in terms of the cut-off rate bound. It is shown that, within this approach, inner modulation coding improves o n standard DPSK when both are combined with an external error correcting co de, such as the industry standard, K = 7 R = 1/2 convolutional code. Some m odulation codes over BPSK and QPSK are examined and a reduced complexity de coder is presented. The results and conclusions are verified by some simula tions.