Optimal and suboptimal synchronization schemes for ultra-wideband systems

Authors:
Dahae Chong;Chonghan Song;Youngpo Lee;Myungsoo Lee;Junhwan Kim;Seokho Yoon
Affiliations:
School of Information and Communication Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do, Korea;School of Information and Communication Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do, Korea;School of Information and Communication Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do, Korea;School of Information and Communication Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do, Korea;School of Information and Communication Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do, Korea;School of Information and Communication Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do, Korea
Venue:
ICCSA'10 Proceedings of the 2010 international conference on Computational Science and Its Applications - Volume Part III
Year:
2010

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Abstract

The conventional ultra-wideband (UWB) synchronization schemes could cause poor performance in receiver operations such as demodulation after the synchronization, since unreliable timing information corresponding to low-power multipath components might be transferred to the next stage. To solve this problem, in this paper, we propose novel synchronization schemes for UWB systems. We first derive an optimal scheme based on the maximum likelihood (ML) criterion and then develop a simpler suboptimal scheme. Simulation results show that both proposed schemes provide a better synchronization performance over the conventional scheme.