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Interference Mitigation Scheme using Edge Side-lobe Suppressors for OFDMA uplink Systems  

유화선 (연세대학교 전기전자공학과 정보통신 연구실)
정성순 (연세대학교 전기전자공학과 정보통신 연구실)
한상철 (연세대학교 전기전자공학과 정보통신 연구실)
홍대식 (연세대학교 전기전자공학과 정보통신 연구실)
강창언 (연세대학교 전기전자공학과 정보통신 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.28, no.12C, 2003 , pp. 1217-1224 More about this Journal
Abstract
In this paper, we propose an edge side-lobe suppressor (ESS) for the uplink of OFDMA systems, which mitigates the interference introduced by different frequency offsets between a desired user and the other users. We evaluate the proposed ESS scheme by measuring average signal to interference ratio (SIR) and average bit error rate (BER). The simulation results confirm that the proposed ESS scheme improves system performance by approximately 5∼10 dB SIR as compared to conventional OFDMA systems. Because the additional operations for the proposed scheme can be performed by a real-valued look-up table, the implementation of the ESS hardly requires increasing transmitter and receiver complexity.
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