Title :
Effects of outdated CSIT on diversity-multiplexing based opportunistic cooperative channels
Author :
Yongcong Yu ; Suili Feng ; Hongcheng Zhuang ; Haixia Cui
Author_Institution :
Sch. of Electron. & Inf. Eng., South China Univ. of Technol., Guangzhou, China
Abstract :
In this paper, we investigate the effects of outdated channel state information at the transmitters (CSIT) on the diversity-multiplexing trade-off (DMT) performance in a scenario based on distributed opportunistic nonorthogonal decode-and-forward relaying channel, where the available CSIT is obtained by the outdated information exchange. The study is conducted by deriving a closed-form DMT expression as a function of the correlation coefficient between the outdated CSIT and the accurate values. Simulation results are presented to verify our analysis.
Keywords :
cooperative communication; decode and forward communication; diversity reception; radio transmitters; relay networks (telecommunication); channel state information; closed-form DMT expression; correlation coefficient; distributed opportunistic nonorthogonal decode-and-forward relaying channel; diversity-multiplexing trade-off; opportunistic cooperative channels; outdated CSIT effects; outdated information exchange; transmitters; Correlation coefficient; Educational institutions; Fading; Multiplexing; Protocols; Relays; Signal to noise ratio; Diversity; Opportunistic relay selection; Outdated channel state information; Spatial multiplexing;
Conference_Titel :
Network Infrastructure and Digital Content (IC-NIDC), 2012 3rd IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4673-2201-0
DOI :
10.1109/ICNIDC.2012.6418821
