Title :
Adaptive Threshold Setting in Acquisition of DS-UWB Signals
Author :
Kuang, Quan ; Qiu, Hongbing ; Chen, Donghua
Author_Institution :
Commun. & Inf. Eng., Guilin Univ. of Electron. Technol., Guilin
Abstract :
An adaptive threshold acquisition system for direct sequence ultra-wideband (DS-UWB) signal is presented. The proposed adaptive scheme is based on radar constant false alarm rate (CFAR) technique. By deriving formulas for the detection probability and false alarm rate, its performance over an additive white Gaussian noise (AWGN) channel is analyzed and compared with the existing fixed threshold system. The proposed system maintains a constant false alarm probability, while the performance of the conventional fixed threshold system varies dramatically relative to the background noise. The results are supported by simulations.
Keywords :
AWGN channels; adaptive signal detection; probability; radar detection; ultra wideband radar; AWGN channel; CFAR technique; DS-UWB signal acquisition; adaptive threshold acquisition system; adaptive threshold setting; additive white Gaussian noise; background noise; constant false alarm probability; radar constant false alarm rate; ultra-wideband radio system; AWGN; Adaptive systems; Additive white noise; Bandwidth; Modulation coding; Performance analysis; Pulse modulation; Pulse width modulation; Spread spectrum communication; Ultra wideband technology;
Conference_Titel :
Communication Technology, 2006. ICCT '06. International Conference on
Conference_Location :
Guilin
Print_ISBN :
1-4244-0800-8
Electronic_ISBN :
1-4244-0801-6
DOI :
10.1109/ICCT.2006.341692
