NDLI: Code tracking of DS-CDMA systems in the presence of multiuser interference and additive noise

Content Provider	IEEE Xplore Digital Library
Author	Huang, W. Andonovic, I. Nakagawa, M.
Copyright Year	1998
Description	Author affiliation: Dept. of Electron. & Electr. Eng., Strathclyde Univ., Glasgow, UK (Huang, W.)
Abstract	The code tracking performance of a noncoherent digital delay-locked loop for DS-CDMA systems is investigated in the presence of multiuser interference and additive noise. Following the description of the code tracking loop, the tracking discriminator characteristics are theoretically analyzed. A detailed theoretical analysis of the steady-state probability density function (PDF) and variance of the tracking jitter is performed by solving the first-order Fokker-Planck equation, and the mean loss-of-lock time of the loop is derived. Numerical evaluation of the PDF is done and compared to the Gaussian distribution. Numerical results of the variance of the tracking jitter and the mean time to lose lock are also presented to illustrate the tracking performance for Gold code sequences. Optimal performance is evaluated minimizing the variance of the tracking jitter, by proper selection of the loop offset.
Starting Page	843
Ending Page	847
File Size	650629
Page Count	5
File Format	PDF
ISBN	078034281X
DOI	10.1109/ISSSTA.1998.722497
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-09-04
Publisher Place	South Africa
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Multiaccess communication Tracking loops Jitter Delay Interference Additive noise Analysis of variance Performance analysis Steady-state Probability density function
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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