Optimization of the pilot-to-data power ratio for DS-CDMA with linear interference suppression

Wayne G. Phoel*, Michael L. Honig

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

We consider a Direct Sequence (DS-) CDMA system with orthogonally multiplexed pilot signals and minimum mean square error (MMSE) data and channel estimation. Large system analysis is used to optimize the pilot-to-data power ratio (PDR). Specifically, the PDR is selected to minimize the probability of error subject to a transmitted power constraint. Both flat and frequency-selective fading channels are considered. When the MMSE filter averages over the channels of the interferers, the optimal PDR is less than that for the matched filter. That is, the MMSE filter benefits from allocating more power to the data. For the case considered, when the MMSE filter directly incorporates channel estimates, the optimal PDR is greater than that for the matched filter.

Original languageEnglish (US)
Title of host publication2000 IEEE Wireless Communications and Networking Conference
Pages619-623
Number of pages5
StatePublished - Jan 1 2002

Publication series

Name2000 IEEE Wireless Communications and Networking Conference
Volume2

ASJC Scopus subject areas

  • Engineering(all)

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    Phoel, W. G., & Honig, M. L. (2002). Optimization of the pilot-to-data power ratio for DS-CDMA with linear interference suppression. In 2000 IEEE Wireless Communications and Networking Conference (pp. 619-623). (2000 IEEE Wireless Communications and Networking Conference; Vol. 2).