Title :
Diversity multiplexing trade-off for opportunistic multiple access relay channel
Author :
Abouelseoud, Mohamed ; Nosratinia, Aria
Author_Institution :
Dept. of Electr. Eng., Univ. of Texas at Dallas, Richardson, TX
Abstract :
This work studies the multiple access relay channel (MARC), specifically it explores the effect of multiuser diversity on the diversity multiplexing trade-off (DMT) performance of the MARC. A new opportunistic channel access communication scheme is proposed where the user selection depends only on the source-destination channels coefficients. This is proven to be DMT optimal. Both non-orthogonal and orthogonal relay transmission are studied under various cooperation protocols. This work does not assume CSI at the transmitters and assumes only 1-bit feedback from the destination to the sources.
Keywords :
MIMO communication; antenna arrays; multiplexing; multiuser channels; protocols; transmitting antennas; channel access communication; cooperation protocols; diversity multiplexing trade-off; feedback; multiple access relay channel; nonorthogonal relay transmission; opportunistic relay channel; orthogonal relay transmission; source-destination channels coefficients; transmitters; AWGN; Access protocols; Decoding; Fading; Feedback; OFDM modulation; Relays; Resource management; Transmitters; Upper bound;
Conference_Titel :
Signals, Systems and Computers, 2008 42nd Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
978-1-4244-2940-0
Electronic_ISBN :
1058-6393
DOI :
10.1109/ACSSC.2008.5074669
