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

fYear

2008

fDate

19-21 Nov. 2008

Firstpage

1635

Lastpage

1639

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICCS.2008.4737459

Filename

4737459