Robust Generalized Sidelobe Canceller for MC-CDMA with Carrier Frequency Offsets

Jhih-Chung CHANG  Ann-Chen CHANG  

IEICE TRANSACTIONS on Communications   Vol.E94-B   No.11   pp.3160-3162
Publication Date: 2011/11/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E94.B.3160
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.