A Novel Relaying Scheme for Improving Capacity of Non-Regenerative Coded Cooperation System

In the wireless networks, utilization of terminals distributed in space can significantly improve the performance of wireless communication systems. In this paper, we investigate two-hop non-regenerative coded cooperation system and propose a novel design of employing linear dispersion codes (LDC) at the source node and a linear processing matrix at the relays. The relay stations make use of the knowledge of the first hop and second hop channel to assign power among the relay stations adaptively. We deduce and analyze the capacity of the proposed scheme. Numerical results show that the proposed scheme can achieve higher capacity gains over employing LDC on conventional Amplify-and-Forward (AF) system.