Diversity Gains for Different Cooperative Schemes on Fast Fading Channels

• Published in: IEEE transactions on wireless communications 2011-05, Vol.10 (5), p.1356-1361
• Main Authors: Kammoun, I, Cipriano, A M
• Format: Article
• Language: English
• Subjects: Access methods and protocols, osi model; Antennas; Applied sciences; Cooperative schemes; Detection, estimation, filtering, equalization, prediction; distributed system; diversity gain; Diversity methods; Exact sciences and technology; Fading; fast fading channels; Grassmann space-time codes; Information, signal and communications theory; non-coherent communications; Protocols; Radiocommunications; Receiving antennas; relaying protocols; Relays; Signal and communications theory; Signal to noise ratio; Signal, noise; Strontium; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Teleprocessing networks. Isdn; Transmission and modulation (techniques and equipments)
• ISSN: 1536-1276; 1558-2248
• DOI: 10.1109/TWC.2011.030311.100653

The use of single-antenna terminals for coherent cooperative wireless communications has received more attention in literature than for non-coherent communications. But acquiring knowledge of the fading coefficients in a cooperative scheme is very challenging in a fast fading case. In this paper, we develop several cooperative schemes suited for systems which do not require channel state information at either relays or destination. We analyze the performance of these schemes in terms of diversity gain and error probability. The diversity gained with an equal gain combiner at the destination is investigated too. The proposed cooperative schemes are compared to the literature and are shown to achieve significant performance gain depending on the type of relaying protocol.