TY - JOUR
T1 - Symbol error probabilities for general cooperative links
AU - Ribeiro, Alejandro
AU - Cai, Xiaodong
AU - Giannakis, Georgios B.
PY - 2005/5/1
Y1 - 2005/5/1
N2 - Cooperative diversity (CD) networks have been receiving a lot of attention recently as a distributed means of improving error performance and capacity. For sufficiently large signal-to-noise ratio (SNR), this paper derives the average symbol error probability (SEP) for analog forwarding CD links. The resulting expressions are general as they hold for an arbitrary number of cooperating branches, arbitrary number of cooperating hops per branch, and various channel fading models. Their simplicity provides valuable insights to the performance of CD networks and suggests means of optimizing them. Besides revealing the diversity, they clearly show from where this advantage comes from and prove that presence of diversity does not depend on the specific (e.g., Rayleigh) fading distribution. Finally, they explain how diversity is improved in multihop CD networks.
AB - Cooperative diversity (CD) networks have been receiving a lot of attention recently as a distributed means of improving error performance and capacity. For sufficiently large signal-to-noise ratio (SNR), this paper derives the average symbol error probability (SEP) for analog forwarding CD links. The resulting expressions are general as they hold for an arbitrary number of cooperating branches, arbitrary number of cooperating hops per branch, and various channel fading models. Their simplicity provides valuable insights to the performance of CD networks and suggests means of optimizing them. Besides revealing the diversity, they clearly show from where this advantage comes from and prove that presence of diversity does not depend on the specific (e.g., Rayleigh) fading distribution. Finally, they explain how diversity is improved in multihop CD networks.
KW - Cooperative diversity
KW - Diversity
KW - Fading
KW - Performance analysis
UR - http://www.scopus.com/inward/record.url?scp=18844438918&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=18844438918&partnerID=8YFLogxK
U2 - 10.1109/TWC.2005.846989
DO - 10.1109/TWC.2005.846989
M3 - Article
AN - SCOPUS:18844438918
VL - 4
SP - 1264
EP - 1273
JO - IEEE Transactions on Wireless Communications
JF - IEEE Transactions on Wireless Communications
SN - 1536-1276
IS - 3
ER -