Enhanced Two-Step Search Scheme for Rapid and Reliable UWB Signal Acquisition 


Vol. 30,  No. 12, pp. 1133-1143, Dec.  2005


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  Abstract

In this paper, we propose an enhanced two-step search scheme for rapid and reliable signal acquisition in UWB systems under multipath channels. The proposed TSS-LS (Two-Step Search scheme with the Linear search based Second step) achieves rapid acquisition performance comparable to the conventional TSS-BS (Two-Step Search scheme with the Bit reversal search based Second step) already proposed by the authors, based on the single-dwell search with two-step thresholds and search windows. However, unlike the TSS-BS which employs the bit reversal search in the second step, the proposed TSS-LS utilizes the linear search in the second step to improve the reliability of signal acquisition. Simulation results with multipath channel models by IEEE 802.15.3a show that the two-step search schemes for the UWB signal acquisition can achieve significant reduction of the required mean acquisition time as compared to general search schemes. In addition, we observe that the proposed TSS-LS achieves quite good bit error rate performance for large signal-to-noise ratios, which is favorably comparable to the case of ideal perfect timing.

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  Cite this article

[IEEE Style]

J. Kim, S. Yang, Y. Shin, "Enhanced Two-Step Search Scheme for Rapid and Reliable UWB Signal Acquisition," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 12, pp. 1133-1143, 2005. DOI: .

[ACM Style]

Jaewoon Kim, Suckchel Yang, and Yoan Shin. 2005. Enhanced Two-Step Search Scheme for Rapid and Reliable UWB Signal Acquisition. The Journal of Korean Institute of Communications and Information Sciences, 30, 12, (2005), 1133-1143. DOI: .

[KICS Style]

Jaewoon Kim, Suckchel Yang, Yoan Shin, "Enhanced Two-Step Search Scheme for Rapid and Reliable UWB Signal Acquisition," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 12, pp. 1133-1143, 12. 2005.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880