An Improved Physical Layer Network Coding Scheme for Two-Way Relay Systems

Date Added: Feb 2010
Format: PDF

In this paper, the authors consider a two-way relaying system with two sources A, B and one relay R, where the two sources desire to exchange information through the relay. The transmission consists of two states: Multiple ACcess (MAC) stage, where A and B transmit the channel-coded signals to R simultaneously, and BroadCast (BC) stage, where R transmits towards both A and B. One critical process at R is to decode the superimposed signal from A and B in such a way that A and B could decode the information from each other reliably at the BC stage.