Joint LDPC and physical-layer network coding for two-way relay channels with different carrier frequency offsets

In practical two-way relay channels, different carrier frequency offsets of physical-layer network coding is a very common situation, which can bring serious performance loss of wireless communication systems. Most of the existing joint channel code and PNC schemes are carried out under the assumption of perfect synchronization. This paper we propose a new joint scheme of Low-Density Parity-Check (LDPC)-coded and physical-layer network coding, and different carrier frequency offsets is considered. Simulation results highlight that the proposed joint design of LDPC and physical-layer network coding scheme outperforms traditional method for in practical two-way relay channels when different carrier frequency offsets is considered.