Performance Analysis of Two-Way Multiple-Antenna Relaying with Network Coding

Two-way relaying is a way of improving the bandwidth efficiency of a half-duplex relay system. In such scenarios, network coding can also be applied to improve the system if there exist sufficient degrees of freedom to decode the received messages at the relay node. In this paper, we look at two specific transmission schemes employed at the multi-antenna relay node and analyze their performance by deriving both the upper bounds of their symbol error probability and their diversity order.