Novel UWB synchronization schemes based on the maximum likelihood criterion

Authors:
Dahae Chong;Junhwan Kim;Seung Goo Kang;Seokho Yoon
Affiliations:
Sungkyunkwan University, South Korea;Sungkyunkwan University, South Korea;Sungkyunkwan University, South Korea;Sungkyunkwan University, South Korea
Venue:
Proceedings of the 6th International Wireless Communications and Mobile Computing Conference
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 than the conventional scheme.