A Relay Selection Scheme in Amplify-and-Forward Relaying Network
Wang Liejun · Communications technology · 2010
A relay selection scheme in amplify-and-forward relaying networks is proposed.On the assumption that multiple antennas are deployed at the destination node,and single antenna at the source node and the relay nodes,the proposed scheme chooses a group of relays,amplifies and forwards the received source-node information at the same frequency band,thus to maximize the receiving SNR.As compared with the prior work,the proposed scheme achieves better outage behavior while maintaining full diversity order.And the performance of symbol error rate(SER) is significantly improved.The proposed scheme has a transmit SNR loss of 1.6 dB if the symbol error rate is required to be 0.00001 for signals modulated by 4PSK.