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http://dx.doi.org/10.7471/ikeee.2012.16.2.153

A New Diversity Combining Scheme Based on Interleaving Method for Time-of-arrival Estimation of Chirp Signal  

Jang, Seong-Hyun (School of Electronics Engineering, Hanyang University)
Chong, Jong-Wha (School of Electronics Engineering, Hanyang University)
Publication Information
Journal of IKEEE / v.16, no.2, 2012 , pp. 153-158 More about this Journal
Abstract
A new diversity combining scheme is proposed for time-of-arrival (TOA) estimation of chirp signal in dense multipath channel. In the multipath channel, the performance of TOA estimation using conventional correlation matrix-based diversity combining scheme is degraded due to the lack of de-correlation effect. To increase the de-correlation effect, the proposed diversity scheme employs interleaving method based on the property of de-chirped signal. As a result, the proposed scheme increases de-correlation effect and also reduces the noise of TOA estimation. Finally, the diversity achieved from the proposed scheme improves TOA estimation performance. The de-correlation effect is analyzed mathematically. The estimation accuracy of the proposed diversity scheme is superior to that of conventional diversity scheme in multipath channel.
Keywords
chirp signal; de-chirped signal; de-correlation; interleaving method; time-of-arrival estimation;
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