Title :
A Survey on Cooperative Diversity for Wireless Networks
Author :
Gómez-Cuba, F. ; Asorey-Cacheda, R. ; González-Castaño, F.J.
Author_Institution :
Gradiant, CITEXVI, Vigo, Spain
Abstract :
Diversity, i.e. transmitting multiple replicas of a signal, may mitigate fading in wireless networks. Among other diversity techniques, the space diversity of multi-antenna systems is particularly interesting since it can complement other forms of diversity. The recent cooperative diversity paradigm brings the advantages of multi-antenna space diversity to single antenna networked devices, which, through cooperation and antenna sharing, form virtual antenna arrays. However, cooperative diversity is a complex technique and research on this topic is still in its early stages. This paper aims at providing a general survey on the theoretical framework; and the physical and medium access control proposals in the literature.
Keywords :
antenna arrays; diversity reception; radio networks; antenna sharing; cooperative diversity paradigm; diversity techniques; multiantenna space diversity; multiantenna systems; single antenna networked devices; virtual antenna arrays; wireless networks; Diversity methods; Encoding; Protocols; Relays; Signal to noise ratio; Tin; Wireless networks; MAC protocols; Wireless networks; cooperative diversity;
Journal_Title :
Communications Surveys & Tutorials, IEEE
DOI :
10.1109/SURV.2011.082611.00047