DocumentCode :
1505238
Title :
A fast acquisition system for ultra-wideband wireless multiple-access communications
Author :
Salih-Alj, Y. ; Despins, Charles ; Affes, S.
Author_Institution :
INRS-EMT, Montreal, QC, Canada
Volume :
34
Issue :
42371
fYear :
2009
Firstpage :
43
Lastpage :
48
Abstract :
The fast and accurate timing acquisition of short ultra-wideband (UWB) pulse shapes and, implicitly, the required high sampling rates play a significant role in UWB receiver-structure design and create challenges for signal acquisition under non-ideal conditions. Furthermore, the pulse shape is seen as one of the key factors influencing the performance of UWB systems. While fulfilling the power-spectral-density emission requirements, the pulse shape must offer the highest detection capabilities with suitable levels of accuracy. In this paper, a fast acquisition system for UWB wireless multiple-access communications is presented. The proposed acquisition system has explicit design characteristics that offer greatly improved acquisition time, accuracy, and implementation cost, while also yielding very satisfactory performance at high noise and multi-user interference levels. In addition, the impact of pulse shapes on the performance of this fast acquisition system is evaluated to determine the most suitable pulse shape for its implementation.
Keywords :
multi-access systems; pulse shaping; radio receivers; radiofrequency interference; signal detection; ultra wideband communication; UWB receiver-structure design; fast acquisition system; multi-user interference levels; power-spectral-density emission; short ultra-wideband pulse shapes; signal acquisition; ultra-wideband wireless multiple-access communications; Costs; Multi-stage noise shaping; Noise level; Pulse shaping methods; Sampling methods; Shape; Signal design; Timing; Ultra wideband technology; Wireless communication; pulse shape; sequence acquisition; ultra-wideband;
fLanguage :
English
Journal_Title :
Electrical and Computer Engineering, Canadian Journal of
Publisher :
ieee
ISSN :
0840-8688
Type :
jour
DOI :
10.1109/CJECE.2009.5291206
Filename :
5291206
Link To Document :
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