Performance Analysis of Stepwise Parallel Processing for Cell Search in WCDMA over Rayleigh Fading Channels 


Vol. 27,  No. 2, pp. 125-136, Feb.  2002


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  Abstract

It is very important to acquire the synchronization in a intercell asynchronous WCDMA system, and it is carried out through the three-step cell search process. The cell search can operate in a stepwise parallel manner, where each step works in pipelined operation, to reduce the cell search time. In case that the execution time is set to be the same in each step, excessive accumulations will be caused in both step 1 and step 3, because step 2 should take at least one frame for its processing. In general, the effect of post-detection integration becomes saturated as the number of the accumulations increases. Therefore, the stepwise parallel scheme does not give much enhancement. In this paper, the performance of the stepwise parallel processing for cell search in WCDMA system is analyzed over Rayleigh fading channels. Through the analysis, the effect of cell search parameters such as the number of accumulations in each step and the power ratio allocated among channels is investigated. In addition, the performance of the stepwise parallel cell search is improved by adjusting the execution time appropriately for each step and is compared with that of the conventional stepwise serial processing.

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  Cite this article

[IEEE Style]

M. K. Song, "Performance Analysis of Stepwise Parallel Processing for Cell Search in WCDMA over Rayleigh Fading Channels," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 2, pp. 125-136, 2002. DOI: .

[ACM Style]

Moon Kyou Song. 2002. Performance Analysis of Stepwise Parallel Processing for Cell Search in WCDMA over Rayleigh Fading Channels. The Journal of Korean Institute of Communications and Information Sciences, 27, 2, (2002), 125-136. DOI: .

[KICS Style]

Moon Kyou Song, "Performance Analysis of Stepwise Parallel Processing for Cell Search in WCDMA over Rayleigh Fading Channels," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 2, pp. 125-136, 2. 2002.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880