DS-CDMA code acquisition in the presence of correlated fading - Part I: theoretical aspects

This paper deals with the analysis of the code-acquisition process performed by a mobile terminal in a code-division multiple-access cellular system. The fundamental contribution is the setting of a theoretical framework for code-acquisition analysis, accounting for the presence of fading and shadow...

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Bibliographic Details
Published in:IEEE transactions on communications 2004-07, Vol.52 (7), p.1160-1168
Main Authors: Corazza, G.E., Caini, C., Vanelli-Coralli, A., Polydoros, A.
Format: Article
Language:English
Subjects:
Event detection
Fading
Multiaccess communication
Multiple access interference
Performance analysis
Probability density function
Quality of service
Shadow mapping
Spread spectrum communication
Testing
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Summary:This paper deals with the analysis of the code-acquisition process performed by a mobile terminal in a code-division multiple-access cellular system. The fundamental contribution is the setting of a theoretical framework for code-acquisition analysis, accounting for the presence of fading and shadowing with specified coherence time. A multidwell architecture is considered, accounting for different verification strategies. The MAX/TC detection criterion is used, and the acquisition performance is analyzed, following both the direct and flow-graph approaches. Expressions for the acquisition time probability density function under different assumptions are given, as well as closed-form expressions for the mean and variance of the acquisition time. Practical applications and numerical results are reported in the Part II companion paper.
ISSN:0090-6778
1558-0857
DOI:10.1109/TCOMM.2004.831414