A new relaying scheme for the MIMO relay network

Multiple-Input Multiple-Output (MIMO) emerged recently as a strong candidate for 4G technology in that it can exploit spatial diversity and multiplexing for increasing the system capacity without extra cost of bandwidth and power. Cooperative relaying, as an efficient solution for ubiquitous coverage, has the potential to become a key technology for future wireless communication system. The combination of MIMO and cooperative relaying technology would provide an excellent information service with high data rate and ubiquitous coverage. The MIMO relay network, with multiple relay nodes and the amplify-and-forward relaying strategy, is focused in this paper. However, the performance of the MIMO relay network is heavily dependent on the signal relaying scheme adopted by relay nodes.