Code acquisition in a class of time-varying channels

Yu-Ted Su*, Ru Chwen Wu

*Corresponding author for this work

Research output: Contribution to journalConference article

Abstract

This paper presents a model for the code acquisition in a time-varying channel and evaluates the associated acquisition time statistics. We first use a finite-state Markov chain to represent the time-varying channel. Each channel state can have either a frequency-selective or a frequency-nonselective fading characteristic. This model is an unconstrained model as it does not take into account two time-parameters. The first time-parameter is the `time unit' for the Markov channel, which has to be determined by the channel Doppler spread or its fading rate. The second time-parameter has to do with the detection structure. Incorporating the constraints imposed by these two time-parameters we discuss modifications of the unconstrained model, derive related statistics (e.g., probability distribution function or characteristic function) of the acquisition time and then provide numerical examples of the acquisition time performance.

Original languageEnglish
Pages (from-to)2431-2435
Number of pages5
JournalIEEE Vehicular Technology Conference
Volume3
DOIs
StatePublished - 1 Dec 1998
EventProceedings of the 1998 48th IEEE Vehicular Technology Conference, VTC'98. Part 3 (of 3) - Ottawa, Can
Duration: 18 May 199821 May 1998

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