Robust Matched-Filter Acquisition for Direct-Sequence Ultrawideband Systems

In this paper, we propose and analyze a rapid acquisition loop for a direct-sequence ultrawideband (DS-UWB) system called robust matched-filter acquisition, which is mainly aimed at eliminating the cases of false alarm in signal acquisition. Moreover, we present a study on the acquisition performanc...

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Bibliographic Details
Published in:IEEE transactions on vehicular technology 2009-10, Vol.58 (8), p.4419-4425
Main Authors: YEN, Nan-Yang, SU, Szu-Lin
Format: Article
Language:English
Subjects:
Acquisition
Acquisitions
Algorithms
Applied sciences
Binary phase shift keying
Channels
Circuit properties
Communication industry
Data communication
Detection, estimation, filtering, equalization, prediction
direct-sequence ultrawideband (DS-UWB)
Electric, optical and optoelectronic circuits
Electronic circuits
Electronics
Exact sciences and technology
False alarms
Frequency filters
Information, signal and communications theory
Marketing
matched filter
Matched filters
Performance analysis
Proposals
Robustness
Serials
Signal analysis
Signal and communications theory
Signal, noise
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transceivers
Transmission and modulation (techniques and equipments)
Ultra wideband technology
Ultrawideband
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Description
Summary:In this paper, we propose and analyze a rapid acquisition loop for a direct-sequence ultrawideband (DS-UWB) system called robust matched-filter acquisition, which is mainly aimed at eliminating the cases of false alarm in signal acquisition. Moreover, we present a study on the acquisition performances of the serial search, conventional matched filter, and robust matched filter in UWB dense multipath environments. The mean acquisition time, the acquisition probability, and the mean number of false alarms are evaluated for CM1-CM4 channel models. We find that the robust matched-filter acquisition provides a significant improvement in performances over the conventional matched-filter algorithm for the specific UWB channel model.
ISSN:0018-9545
1939-9359
DOI:10.1109/TVT.2009.2021943