DocumentCode :
463844
Title :
A New Modulation Scheme for Rapid Blind Timing Acquisition using Dirty Template Approach for UWB Systems
Author :
Ouertani, M. ; Huilin Xu ; Liuqing Yang ; Besbes, H. ; Bouallegue, Ammar
Author_Institution :
ISI, Institut Superieur d´Informatique, Tunisia
Volume :
3
fYear :
2007
fDate :
15-20 April 2007
Abstract :
Timing acquisition is one of the major challenges in ultra-wideband (UWB) communications. The timing with dirty template (TDT) approach is an attractive technique for UWB systems, which is characterized by its low complexity and fast acquisition in the data-aided (DA) mode. However, in the non-data-aided (NDA) mode, the performance of this approach degrades due to the random symbol effect. In this paper, we propose to overcome this issue by adopting orthogonal pulse-shape modulation (PSM) proposed in L.B. Michael et al. (2002), (M. Pinchas and B.Z. Bobrovsky, 2003). Our algorithm uses a train of alternating orthogonal Hermite pulses to modulate the transmitted symbols. The application of the TDT approach to the proposed scheme shows an enhancement of synchronization speed in the NDA mode. Simulations confirm performance improvement of TDT with the proposed modulation relative to the original TDT in terms of the mean square error (MSE) and the acquisition probability.
Keywords :
mean square error methods; pulse modulation; ultra wideband communication; MSE; PSM; UWB systems; adopting orthogonal pulse-shape modulation; data-aided mode; dirty template approach; mean square error; modulation scheme; orthogonal Hermite pulses; rapid blind timing acquisition; ultra-wideband communications; Degradation; Energy efficiency; Intersymbol interference; Mean square error methods; Pulse modulation; Pulse shaping methods; Timing; Transceivers; Transmitting antennas; Ultra wideband technology; Synchronization; timing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Acoustics, Speech and Signal Processing, 2007. ICASSP 2007. IEEE International Conference on
Conference_Location :
Honolulu, HI
ISSN :
1520-6149
Print_ISBN :
1-4244-0727-3
Type :
conf
DOI :
10.1109/ICASSP.2007.366523
Filename :
4217697
Link To Document :
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