Suboptimal precoder design for BS-CDMA systems using Chu sequences as the spreading codes

Yue Wang, Justin P Coon, Justin P Coon

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

Abstract

In this paper, we consider block spread code division multiple access (BS-CDMA) systems using Chu sequences as the spreading codes, namely the Chu-BS-CDMA systems, and study the percoder design for such systems. We show that Chu-BS-CDMA using the conventional zero-padding precoder and minimum mean squared error (MMSE) detector yields an inferior performance, while that using the existing optimal S-precoder with successive detection yields a substantial performance gain with a high computational complexity. To combat the disadvantages occurred in the aforementioned two types of precoders, we propose in this paper a novel suboptimal precoder design, where Chu-BS-CDMA using the proposed precoder and decoder and successive detection is shown to achieve a performance comparable to that using the optimal S-precoder, while offering a much reduced complexity. In particular, the design of optimal S-precoder requires channel state information (CSI) and iterative eigen-value decompositions at the transmitter, while the proposed precoder and decoder design does not.

Original languageEnglish
Title of host publicationIEEE Pacific Rim Conference on Communications, Computers and Signal Processing, 2011. PacRim 2011.
Place of PublicationNEW YORK
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages310-315
Number of pages6
ISBN (Print)978-1-4577-0251-8
Publication statusPublished - Aug 2011
EventIEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM) - Victoria, Canada
Duration: 23 Aug 201126 Aug 2011

Conference

ConferenceIEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM)
CountryCanada
CityVictoria
Period23/08/1126/08/11

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