On Delay Estimation Error for CDMA in Fast Fading Channels

Wei CHEN  Erry GUNAWAN  Kah Chan TEH  

IEICE TRANSACTIONS on Communications   Vol.E88-B   No.9   pp.3788-3790
Publication Date: 2005/09/01
Online ISSN: 
DOI: 10.1093/ietcom/e88-b.9.3788
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
DS-CDMA system,  fast fading channel,  space-time array manifold model,  delay estimation,  

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Space-time array manifold model is usually used in a fast fading channel to estimate delay for the radio location. The existing additive white Gaussian noise (AWGN) estimation error model significantly overestimates the delay estimation. In this paper, we model the estimation error of the space-time array manifold channel impulse response (CIR) matrix as a correlated AWGN matrix and its performance is shown to be closer to the estimation error of practical systems than the existing model.