Iterative Channel Coded Physical Layer Network Coding on Impulsive Noise Channels

Abstract

Physical-Layer Network Coding (PNC) employed on a conventional two-way relay communications is an active research area due to the potential doubling of the throughput compared with traditional routing. In this paper, we investigate the effects of impulsive noise added at the relay and sink nodes of a TWRC employing link-by-link coded PNC. The Gaussian mixture model is chosen to model the impulsive noise and the performance of bit-interleaved coded modulation with iterative decoding (BICM-ID) and turbo codes on the conventional two-way relay communications is evaluated through simulation results for different mixtures, , of impulsive noise. For high and low values of the turbo codes outperform trellis BICM, but it is shown that for values between = 0.1 and = 0.5, a PNC system with trellis BICM outperforms a comparable PNC system with turbo codes, where both coding schemes have the same block size, code rate and constraint length.