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Performance analysis on an MAP fine timing algorithm in UWB multiband OFDM

9 years 8 months ago
Performance analysis on an MAP fine timing algorithm in UWB multiband OFDM
In this paper we develop a fine synchronization algorithm for multiband OFDM transmission in the presence of frequency selective channels. This algorithm is based on maximum a posteriori (MAP) joint timing and channel estimation that incorporates channel statistical information, leading to considerable performance enhancement relative to existing maximum likelihood (ML) approaches. We carry out a thorough performance analysis of the fine timing algorithm, and link the diversity concept widely used in data communications to the timing performance. We show that the probability of the timing offset equal to or larger than taps has a diversity order of NB min(, L) in Rayleigh fading channels, where NB is the number of subbands and L is the number of channel taps. This result reveals that the timing estimate is very much concentrated around the true timing as the signal to noise ratio (SNR) increases. Our simulations confirm the theoretical analysis, and also demonstrate the robustness of ...
Christian R. Berger, Shengli Zhou, Zhi Tian, Peter
Added 15 Dec 2010
Updated 15 Dec 2010
Type Journal
Year 2008
Where TCOM
Authors Christian R. Berger, Shengli Zhou, Zhi Tian, Peter K. Willett
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