Title :
Approaching the Optimal Diversity-Multiplexing Tradeoff in a Four-node Cooperative Network
Author :
Wang, Chao ; Fan, Yijia ; Thompson, John S. ; Skoglund, Mikael ; Poor, H. Vincent
Author_Institution :
Sch. of Electr. Eng., R. Inst. of Technol. (KTH), Stockholm, Sweden
fDate :
12/1/2010 12:00:00 AM
Abstract :
A novel cooperative diversity transmission protocol is proposed for a four-node network, in which a single-antenna source communicates with an N-antenna destination with the help of two K-antenna half-duplex decode-and-forward (DF) relays. The proposed shifted successive DF relaying (SSDFR) protocol asymptotically achieves the optimal diversity-multiplexing tradeoff (DMT) the system can provide. The resulting DMT performance does not require complex coding strategies at the relays, extremely strong or weak inter-relay channel conditions, or feedback from the destination to the source, which highlights the advantages of the proposed protocol over state of the art techniques.
Keywords :
antennas; cooperative communication; decode and forward communication; diversity reception; encoding; multiplexing; protocols; DMT; K-antenna half-duplex decode-and-forward relays; N-antenna destination; coding strategy; cooperative diversity transmission protocol; four-node cooperative network; optimal diversity-multiplexing tradeoff; shifted successive DF relaying protocol; single-antenna source; weak inter-relay channel conditions; Diversity methods; Multiplexing; Protocols; Relays; Slot antennas; Transmitting antennas; Cooperative diversity; diversity-multiplexing tradeoff (DMT); repetition coding;
Journal_Title :
Wireless Communications, IEEE Transactions on
DOI :
10.1109/TWC.2010.101310.091396
