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Combined adaptive RAKE diversity (ARD) and coding for DPSK DS/CDMA mobile radio

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2 Author(s)
Higashi, A. ; NTT Mobile Commun. Network Inc., Kanagawaken, Japan ; Matsumoto, T.

A diversity combining scheme, adaptive RAKE diversity (ARD), is proposed for a differential phase-shift keying (DPSK) direct sequence code division multiple access (DS/CDMA) mobile communications system. The ARD scheme minimizes the mean squared errors in the diversity combiner output. This suppresses the effects of the interference only paths in the time window for path diversity combining. Bit error rate (BER) performances with the proposed ARD and conventional equal gain combining (EGC) schemes are evaluated through laboratory experiments and compared. Block error rate (BKER) performance with the ARD scheme is also evaluated experimentally. Based upon the BKER evaluation results, an error correction scheme is proposed that is suitable for error occurrence characteristics of ARD output

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Selected Areas in Communications, IEEE Journal on  (Volume:11 ,  Issue: 7 )