Title :
On Bit Error Performance of Full-Rate Signal Space Cooperative Communication over Nakagami-m Fading Channels
Author :
Lu, Tao ; Ge, Jianhua ; Yang, Ye ; Gao, Yang
Author_Institution :
State Key Lab. of Integrated Service Networks, Xidian University, Xi´´an, China
fDate :
8/1/2012 12:00:00 AM
Abstract :
Signal space cooperative (SSC) system can realize full-rate transmission while achieving maximum cooperative diversity gain at the same time by using the signal space diversity technique. In this letter, we investigate the bit error rate (BER) performance of the SSC system over independent and non-identically distributed (i.ni.d.) Nakagami-m fading channels. Particularly, an accurate analytical expression for the overall BER is derived. Moreover, a tight approximation for the BER is obtained to reveal that the achievable diversity order of the SSC system is {{m}_{SD}}+min { {{m}_{SR}},{{m}_{RD}} }, where m_SD, m_SR, and m_RD are the Nakagami fading parameters for the source-destination, source-relay, and relay-destination channels, respectively. Simulation results are presented to verify our theoretical analysis.
Keywords :
Approximation methods; Bit error rate; Fading; Relays; Signal to noise ratio; Bit error rate; Nakagami-m fading; cooperative diversity; decode-and-forward; signal space diversity;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2012.051512.120659
