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A Modified Sequential Acquisition Scheme in Direct-Sequence Spread-Spectrum Communications over a Fading Channel

Jia-Chin LIN

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Summary :

A modified sequential acquisition scheme is proposed in this letter to avoid the significant high error probabilities (false alarm and missing probabilities) occurring with the conventional sequential acquisition scheme in direct-sequence spread-spectrum systems while a high frequency offset is present. A new estimator of Ek/N0 is also designed to effectively solve the problems caused by the channel fading effects. Extensive computer simulation results have indicated that the proposed technique can achieve the desired low error probabilities, and furthermore its performance is very close to that with the perfect channel estimation.

Publication
IEICE TRANSACTIONS on Communications Vol.E83-B No.10 pp.2442-2446
Publication Date
2000/10/25
Publicized
Online ISSN
DOI
Type of Manuscript
LETTER
Category
Transmission Systems and Transmission Equipment

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