The paper describes a simulation case study of a high capacity digital radio link subject to frequency selective fading with M-QAM modulation and different types of channel encoding. The error rate of the uncoded M-QAM digital radio channel is estimated first. Then the performance of the encoded...

Software simulation results are presented for the performance on a nonlinear AWGN band-limited satellite channel of the INTELSAT IBS (2,1) and punctured (4,3) convolutional codes with QPSK modulation and a (3,2) trellis code with 8PSK modulation. Bit error rate estimates are obtained using the...