Spectrally-Efficient Decode-and-Forward Scheme Based on Constellation Rotation

ETRI Journal

关键词: constellation rotation;    decode-and-forward;    diversity order;    Spectral efficiency;   

Others  :  1185922
DOI  :  10.4218/etrij.10.0210.0012

【 摘 要 】

A spectrally-efficient scheme is proposed for orthogonal decode-and-forward relaying. By utilizing constellation rotation, the scheme can achieve twice the spectral efficiency as that of the conventional one, with low implementation complexity. It can offer a full diversity order as well, whereas the loss in coding gain is less than 1 dB for practical environments.

   

【 参考文献 】

• [1]D. Duyck, J.J. Boutros, and M. Moeneclaey, "Low-Density Parity-Check Coding for Block Fading Relay Channels," Proc. IEEE-ITW, 2009, pp. 248-252.
• [2]J.N. Laneman, D.N.C. Tse, and G.W. Wornell, "Cooperative Diversity in Wireless Networks: Efficient Protocols and Outage Behavior," IEEE Trans. Inf. Theory, vol. 50, no. 12, Dec. 2004, pp. 3062-3080.
• [3]Y. Lee, M.H. Tsai, and S.I. Sou, "Performance of Decode-and- Forward Cooperative Communications with Multiple Dual-Hop Relays over Nakagami-m Fading Channels," IEEE Trans. Wireless Commun., vol. 8, no. 6, June 2009, pp. 2853-2859.
• [4]J. Boutros and E. Viterbo, "Signal Space Diversity: A Power-and Bandwidth-Efficient Diversity Technique for Rayleigh Fading Channel," IEEE Trans. Inf. Theory, vol. 44, no. 4, Apr. 1998, pp. 1453-1467.