Improved subcarrier allocation in cooperative OFDMA system

Author

Wang, Jingning ; Wu, Xuanli ; Tan, Xuezhi

Author_Institution

54th Res. Inst. of China Electron., Technol. Group Corp., Shijiazhuang, China

fYear

2011

fDate

17-19 Aug. 2011

Firstpage

45

Lastpage

49

Abstract

Focusing on the low throughput of fair subcarrier allocation in cooperative OFDMA system, an improved algorithm with single subcarrier capacity threshold and cooperative power factor is proposed. In this algorithm, the users with bad channel can not occupy too many subcarrier, and the power for cooperating with other users of users with good channel is limited. Simulation results show that this algorithm can increase the total channel capacity with less loss of fairness.

Keywords

OFDM modulation; channel capacity; cooperative communication; frequency division multiple access; channel capacity; cooperative OFDMA system; cooperative power factor; fair-subcarrier allocation; fairness loss; improved subcarrier allocation; single-subcarrier capacity threshold; Channel capacity; Greedy algorithms; Relays; Resource management; Signal processing algorithms; Signal to noise ratio; Throughput; OFDMA; cooperative diversity; fairness tradeoff; subcarrier allocation;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications and Networking in China (CHINACOM), 2011 6th International ICST Conference on

Conference_Location

Harbin

Print_ISBN

978-1-4577-0100-9

Type

conf

DOI

10.1109/ChinaCom.2011.6158117

Filename

6158117