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Robust Generalized Sidelobe Canceller for MC-CDMA with Carrier Frequency Offsets
Jhih-Chung CHANG Ann-Chen CHANG
IEICE TRANSACTIONS on Communications
Publication Date: 2011/11/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
CFO, GSC, MC-CDMA, multiuser detection, uplink,
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In this letter, a generalized sidelobe canceller (GSC) with robustness against carrier frequency offset (CFO) is proposed for the uplink MC-CDMA system. It has been shown that a CFO will cause the spreading code mismatch and desired signal cancellation. By incorporating the corrected quiescent weight of the upper branch and blocking matrix of the lower branch, we create an efficient GSC that offers strongly counters the effect of the CFO. Significant performance improvement of the proposed GSC is demonstrated by simulation results.