Synchronization Scheme for Frame Differential IR-UWB Receivers

Jyh-Horng WEN  Hsi-Chou HSU  Po-Wei CHEN  

Publication
IEICE TRANSACTIONS on Communications   Vol.E92-B   No.7   pp.2389-2396
Publication Date: 2009/07/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E92.B.2389
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Transmission Systems and Transmission Equipment for Communications
Keyword: 
frame-differential,  ultra wideband (UWB),  synchronization,  timing acquisition,  

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Summary: 
Synchronization poses a major challenge in ultra wideband (UWB) systems due to low signal duty cycles in UWB. This study develops an effective synchronization scheme for frame-differential IR-UWB receivers to improve the synchronization speed. The proposed parallel search mechanism reduces the search region of the symbol boundaries to only a single frame duration. Moreover, only one delay element is needed in each branch, since a shared looped delay-line (SLD) is also proposed to lower the implementation complexity of the parallel search mechanism. Simulations and performance analysis show that the proposed scheme achieves a lower mean square error and a higher probability of detection than other alternatives.