Performance Analysis of MISO Downlink CDMA Systems over Rayleigh Fading Channels

Dianjun CHEN  Takeshi HASHIMOTO  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E87-A    No.9    pp.2440-2447
Publication Date: 2004/09/01
Online ISSN: 
Print ISSN: 0916-8508
Type of Manuscript: PAPER
Category: Spread Spectrum Technologies and Applications
transmit diversity,  CDMA,  maximum likelihood receiver,  

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We analyze the performance of multiple input single output (MISO) synchronous downlink CDMA system over Rayleigh fading channels. We propose an upper bound on its bit error rate (BER) assuming maximum likelihood (ML) multiuser detection by extending notion of removable error vector to fading channels. From the upper bound, we discuss the optimality of space-time spreading and its extension to non-orthogonal base sequences. We also give some numerical results.