Parallel Code Acquisition Techniques in Chip-Asynchronous DS/SS Systems 


Vol. 27,  No. 7, pp. 635-640, Jul.  2002


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  Abstract

We investigate optimal and suboptimal decision rules for parallel code acquisition in chip asynchronous direct-sequence spread-spectrum systems. The conventional decision rule for parallel acquisition is to choose the largest correlator output of a receiver. However, such a scheme is optimum only for chip synchronous models. In this paper, an optimal decision rule is derived based on the maximum-likehood criterion for chip asynchronous models. A simpler suboptimal decision rule is also discussed. The performance of the optimum and suboptimum decision rules is compared to that of the conventional decision rule. Numerical results show that, for chip asynchronous models, both the optimal and suboptimal decision rules outperform the conventional decision rule.

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  Cite this article

[IEEE Style]

M. Oh, S. Yoon, I. Song, J. Bae, "Parallel Code Acquisition Techniques in Chip-Asynchronous DS/SS Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 7, pp. 635-640, 2002. DOI: .

[ACM Style]

Mijeong Oh, Seokho Yoon, Iickho Song, and Jinsoo Bae. 2002. Parallel Code Acquisition Techniques in Chip-Asynchronous DS/SS Systems. The Journal of Korean Institute of Communications and Information Sciences, 27, 7, (2002), 635-640. DOI: .

[KICS Style]

Mijeong Oh, Seokho Yoon, Iickho Song, Jinsoo Bae, "Parallel Code Acquisition Techniques in Chip-Asynchronous DS/SS Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 7, pp. 635-640, 7. 2002.