Optimal and Collaborative Rate Selection for Interference Cancellation in Wireless Networks

Author

Angelakis, Vangelis ; Chen, Lei ; Yuan, Di

Author_Institution

Dept. of Sci. & Technol., Linkoping Univ., Norrkoping, Sweden

Volume

15

Issue

8

fYear

2011

fDate

8/1/2011 12:00:00 AM

Firstpage

819

Lastpage

821

Abstract

Analysis of wireless systems commonly assumes single-user detection at the receivers. Interference is typically treated as noise. On the other hand, multiuser detection has long been taking advantage of interference cancellation (IC) to increase capacity. We exploit IC by optimal rate selection. Transmission rates are collaboratively optimized to maximize the benefit of IC. A link reduces its rate, if that enables IC to significantly boost the SINR on other links. We provide a complexity analysis and an integer programming model to find the optimal IC pattern. Simulation results indicate that throughput improvement is over 30% in low SINR regimes.

Keywords

integer programming; interference suppression; multiuser detection; radio networks; collaborative rate selection; complexity analysis; integer programming model; multiuser detection; optimal interference cancellation pattern; optimal rate selection; single-user detection; transmission rates; wireless networks; wireless systems; Integrated circuit modeling; Interference cancellation; Signal to noise ratio; Throughput; Wireless networks; Interference cancellation; optimization; rate selection; wireless communications;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2011.062711.110561

Filename

5937210