Design and Performance Analysis of a Decision-Feedback Coherent Code Tracking Loop for WCDMA Systems 


Vol. 29,  No. 4, pp. 429-438, Apr.  2004


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  Abstract

In this paper, a decision-feedback coherent code tracking loop is designed for WCDMA systems and its performance is analyzed in terms of jitter variance considering the effect of phase and symbol estimation errors for both AWGN and fading environments. An analytical closed-form formula for jitter variance is first derived for AWGN environments as a function of a pulse-shaping filter, timing offset, signal-to-interference ratio, and loop bandwidth while involving the phase estimation error and bit error rate, and the upper bound of jitter variance is derived for fading environments. Finally a second-order coherent code tracking loop is designed with the DPCH frame format #13 of the WCDMA forward link selected as a target system, and its performance is evaluated by the closed-form formula and compared with the simulation results for both AWGN and Rayleigh fading environments.

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  Cite this article

[IEEE Style]

H. Park, Y. Yang, Y. Kim, C. Kim, "Design and Performance Analysis of a Decision-Feedback Coherent Code Tracking Loop for WCDMA Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 29, no. 4, pp. 429-438, 2004. DOI: .

[ACM Style]

Hyung-Rae Park, Yeon-Sil Yang, Young-Sun Kim, and Chang-Ju Kim. 2004. Design and Performance Analysis of a Decision-Feedback Coherent Code Tracking Loop for WCDMA Systems. The Journal of Korean Institute of Communications and Information Sciences, 29, 4, (2004), 429-438. DOI: .

[KICS Style]

Hyung-Rae Park, Yeon-Sil Yang, Young-Sun Kim, Chang-Ju Kim, "Design and Performance Analysis of a Decision-Feedback Coherent Code Tracking Loop for WCDMA Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 29, no. 4, pp. 429-438, 4. 2004.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880