Title :
Performance analysis of multiuser uplink amplify-and-forward relay networks with fixed-gain relaying
Author :
Li, Guangping ; Blostein, Steven D. ; Zhang, Guangchi ; Feng, Jiuchao
Author_Institution :
Sch. of Electron. & Inf. Eng., South China Univ. of Technol., Guangzhou, China
Abstract :
In this paper, a multiuser uplink amplify-and-forward (AF) relay system with a multiple-antenna destination is considered where fixed-gain relaying and opportunistic scheduling are employed. Closed-form expressions for outage probability and average symbol error rate (SER) in Rayleigh fading environments are derived. Also, asymptotic expressions for outage probability and average SER are presented. The coding gain and diversity order are obtained. The analysis demonstrates that the total diversity order of the system equals min{K, M} where K is the multiuser diversity order and M is the spatial diversity order. Finally, comparisons between multiuser relaying systems and multiuser point-to-point systems are made and some insights are provided.
Keywords :
Rayleigh channels; amplify and forward communication; antenna arrays; diversity reception; encoding; error statistics; multiuser detection; probability; relays; scheduling; AF relay system; Rayleigh fading environment; asymptotic expression; average SER; average symbol error rate; closed-form expression; coding gain; fixed-gain relaying network; multiple-antenna destination; multiuser diversity order; multiuser point-to-point system; multiuser uplink amplify-and-forward relay network; opportunistic scheduling; outage probability; performance analysis; spatial diversity order; Antennas; Educational institutions; Fading; Relays; Signal to noise ratio;
Conference_Titel :
Communications in China Workshops (ICCC), 2012 1st IEEE International Conference on
Conference_Location :
Bejing
Print_ISBN :
978-1-4673-2996-5
Electronic_ISBN :
978-1-4673-2995-8
DOI :
10.1109/ICCCW.2012.6316483
