Joint Physical Network Coding and LDPC decoding for Two Way Wireless Relaying

TL;DR

This paper introduces a joint physical network coding and LDPC decoding scheme for two-way wireless relaying, demonstrating improved performance over existing methods in noisy channels.

Contribution

It proposes a novel low complexity joint physical network coding and LDPC decoding method that enhances decoding efficiency in bi-directional relaying systems.

Findings

Outperforms existing MMSE network coding and LDPC decoding methods

Effective in AWGN and complex MAC channels

Decodes network coded codewords from superimposed signals

Abstract

In this paper, we investigate the joint design of channel and network coding in bi-directional relaying systems and propose a combined low complexity physical network coding and LDPC decoding scheme. For the same LDPC codes employed at both source nodes, we show that the relay can decodes the network coded codewords from the superimposed signal received from the BPSK-modulated multiple-access channel. Simulation results shown that this novel joint physical network coding and LDPC decoding method outperforms the existing MMSE network coding and LDPC decoding method over AWGN and complex MAC channel.