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Staggered Resource Allocation Scheme for Co-Channel Interference Mitigation in a Cellular OFDMA System  

Son, Jun-Ho (고려대학교 전자전기공학과 무선정보시스템공학 연구실)
Min, Tae-Young (고려대학교 전자전기공학과 무선정보시스템공학 연구실)
Kang, Chung-G. (고려대학교 전자전기공학과 무선정보시스템공학 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.33, no.12A, 2008 , pp. 1191-1199 More about this Journal
Abstract
We propose the Staggered-zone Resource Allocation (SRA) in order to relax throughput decrease problems by the co-channel interference of the cell boundary users at the cellular OFDMA system using frequency reuse factor K=1 and analyze the throughput improvement. The proposed algorithm allocates the resources to the users in compliance with resource allocation rule which is planned in order to minimize co-channel interference between cells without any additional information. The resource allocation method in the SRA lines up the users in pathloss order as descending series, and then allocates from pre-determined resource allocation region where decides differently in each cell. This algorithm prevents the co-channel interferences of the cell boundary user to be caused by using same resource simultaneously and equalizes interference to the users in the cell.
Keywords
Soft Frequency Reuse; Co-Channel Interference; Interference Mitigation; OFDMA;
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