Iterative cochannel interference cancellation in synchronous CDMA on a frequency selective channel

Research output: Contribution to conferencePaperpeer-review

Abstract

In a synchronous CDMA system the orthogonality of the codes insures no interference between the users. However, when strong multipath distortion is present, the orthogonality is destroyed. In this paper we propose a signal processing technique for multiuser detection which iteratively seeks for the maximum likelihood solution. This nonlinear technique is shown to perform much better than the optimal linear solution. The algorithm lends itself to an efficient DSP or VLSI implementation. At the transmitter a set of approximately orthogonal Gold codes is used. In addition to evaluating the performance of a coded or uncoded system by simulations, we are able to develop a simple and easy to use metric of channel quality which can approximately predict the system performance.

Original languageEnglish
Pages336-340
Number of pages5
StatePublished - 1996
EventProceedings of the 1996 5th IEEE International Conference on Universal Personal Communications, ICUPC'96. Part 1 (of 2) - Cambridge, MA, USA
Duration: 29 Sep 19961 Oct 1996

Conference

ConferenceProceedings of the 1996 5th IEEE International Conference on Universal Personal Communications, ICUPC'96. Part 1 (of 2)
CityCambridge, MA, USA
Period29/09/961/10/96

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