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Blind RLS-Based Detection Using GSC with DF for STBC MC-CDMA Systems Under Mismatched Channel Estimation

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Abstract

Under Rayleigh fading channels, a common problem with blind multiuser space-time block coded (STBC) multicarrier code division multiple access (MC-CDMA) detectors is that their performance is very sensitive to the signature waveform mismatch (SWM) induced by channel estimation distortion. This paper presents a robust detector using the generalized sidelobe canceller with a double-feedback filter that effectively mitigates the channel estimation distortion for the STBC MC-CDMA system during multipath fading. Numerical simulations show that the proposed detector substantially provides robustness against small-to-medium SWM scenarios for a downlink STBC MC-CDMA system.

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Authors and Affiliations

  1. Department of Electrical Engineering, R.O.C. Military Academy, Kaohsiung, 830, Taiwan, ROC

    Chih-Wei Jen

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  1. Chih-Wei Jen
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Correspondence to Chih-Wei Jen.

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Jen, CW. Blind RLS-Based Detection Using GSC with DF for STBC MC-CDMA Systems Under Mismatched Channel Estimation. Wireless Pers Commun 77, 3041–3049 (2014). https://doi.org/10.1007/s11277-014-1693-3

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