TY - GEN
T1 - Relay selection with constellation rearrangement for superposition modulation cooperative relay
AU - Wu, Lindong
AU - Fei, Zesong
AU - Luo, Chen
AU - Kuang, Jingming
PY - 2011
Y1 - 2011
N2 - In this paper, we consider a multi-relay Demodulateand-Forward (DMF) cooperation system, in which the high order superposition modulation (SM), superposition 16-QAM modulation (16-QAM SM), is employed. For the given system, a new relay selection scheme with constellation rearrangement (CR) technique is proposed, which is based on the optimal total mutual information (MI) criterion. Firstly we find the optimal bit-symbol mappings for all the relays. And then the source chooses the best relay, which maximizes the MI, to cooperate with. We assume that all the channel state information (CSI) is available. A variety of simulations are performed and show that they match exactly with analytic ones. In addition, the result shows that our new strategy utilizing high order superposition modulation with CR outperforms the classical SM cooperation scheme and traditional DMF scheme for about 1.5 dB and 2.5 dB, respectively. Meanwhile, it improves spectrum efficiency with the same complexity.
AB - In this paper, we consider a multi-relay Demodulateand-Forward (DMF) cooperation system, in which the high order superposition modulation (SM), superposition 16-QAM modulation (16-QAM SM), is employed. For the given system, a new relay selection scheme with constellation rearrangement (CR) technique is proposed, which is based on the optimal total mutual information (MI) criterion. Firstly we find the optimal bit-symbol mappings for all the relays. And then the source chooses the best relay, which maximizes the MI, to cooperate with. We assume that all the channel state information (CSI) is available. A variety of simulations are performed and show that they match exactly with analytic ones. In addition, the result shows that our new strategy utilizing high order superposition modulation with CR outperforms the classical SM cooperation scheme and traditional DMF scheme for about 1.5 dB and 2.5 dB, respectively. Meanwhile, it improves spectrum efficiency with the same complexity.
KW - Constellation rearrangement
KW - Mutual information
KW - Relay selection
KW - Superposition modulation
UR - https://www.scopus.com/pages/publications/80054904760
U2 - 10.1109/wicom.2011.6040192
DO - 10.1109/wicom.2011.6040192
M3 - Conference contribution
AN - SCOPUS:80054904760
SN - 9781424462520
T3 - 7th International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2011
BT - 7th International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2011
T2 - 7th International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2011
Y2 - 23 September 2011 through 25 September 2011
ER -