Coherent detection with reference-symbol based channel estimation for direct sequence CDMA uplink communications

30 December 2002

conference paper
Published by Institute of Electrical and Electronics Engineers (IEEE)

No. 10903038,p. 400-403
https://doi.org/10.1109/vetec.1993.507496

Abstract

A new coding/modulation arrangement for up-link direct-sequence code division multiple access (DS-CDMA) communication, which employs coherent detection with reference-symbol based channel estimation, is presented. It is shown that the required E/sub b//N/sub O/ for this scheme is about 2 dB to 2.5 dB lower than non-coherent detection of Walsh coding with bit interleaving and about 1 dB to 1.3 dB lower than noncoherent detection with Walsh symbol interleaving over the entire range of practical vehicle speeds. A frequency domain analysis of this scheme is given.

Keywords

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