Title :
Capacity analysis of subcarrier pairing for OFDMA-based DF relay link over Rayleigh channel
Author :
Feng, Ke ; Suili, Feng ; Hongcheng, Zhuang
Author_Institution :
Sch. of Electron. & Inf. Eng., South China Univ. of Technol., Guangzhou, China
Abstract :
In this paper we analyze the end-to-end capacity of subcarrier pairing strageties of OFDMA-base DF relay link over Rayleigh fading channels. We compare fixed pairing strategy to optimal pairing strategy in the circumstance that the relay is fixed or mobile.The main contribution of this paper is deriving the closed-form expressions for average end-to-end SNR and capacity in these circumstances. The simulation result illustrates that the optimal pairing scheme can bring performance gain over fixed subcarrier pairing as expected.
Keywords :
OFDM modulation; Rayleigh channels; channel capacity; frequency division multiple access; DF relay link; OFDMA; Rayleigh fading channel; closed-form expression; fixed pairing strategy; optimal pairing strategy; orthogonal frequency division multiple access; subcarrier pairing capacity analysis; Access protocols; Closed-form solution; Decoding; Fading; Information analysis; Performance gain; Power system relaying; Rayleigh channels; Relays; Wireless communication; OFDMA; capacity; relay; subcarrier pairing;
Conference_Titel :
Communication Systems, 2008. ICCS 2008. 11th IEEE Singapore International Conference on
Conference_Location :
Guangzhou
Print_ISBN :
978-1-4244-2423-8
Electronic_ISBN :
978-1-4244-2424-5
DOI :
10.1109/ICCS.2008.4737459
