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Blind interference suppression scheme for non-coherent demodulation of direct-sequence CDMA signals over multipath channels

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2 Author(s)
Ho-Chi Hwang ; Comput. & Commun. Res. Lab., Ind. Technol. Res. Inst., Hsinchu, Taiwan ; Che-Ho Wei

The problem of blind demodulation of differentially-encoded DS/CDMA signals over multipath channels is considered. The proposed receiver employing a generalized sidelobe cancellation (GSC) filter bank intends to extract the desired signal components from different paths and to combine these differentially-decoded components diversely to form the decision statistic. A RLS type blind algorithm is derived to train the parallel GSC filters in order to track the time-varying channels. Several numerical results illustrate that the proposed receiver outperforms the other reception schemes in BER performance.

Published in:

Communications, 1999. APCC/OECC '99. Fifth Asia-Pacific Conference on ... and Fourth Optoelectronics and Communications Conference  (Volume:1 )

Date of Conference:

18-22 Oct. 1999