Code acquisition with adaptive threshold for TH-UWB systems

Jiachi Wang; Xiulin Hu; Yunyu Zhang

doi:10.1117/12.657672

4 January 2006 Code acquisition with adaptive threshold for TH-UWB systems

Jiachi Wang, Xiulin Hu, Yunyu Zhang

Proceedings Volume 5985, International Conference on Space Information Technology; 59852G (2006) https://doi.org/10.1117/12.657672
Event: International Conference on Space information Technology, 2005, Wuhan, China

Abstract

In this paper, we present a pseudonoise(PN) code acquisition scheme with adaptive threshold for Ultra Wideband(UWB) digital receivers, in which Time Hopping(TH) was introduced to allow for multi-user access(MA). The adaptive threshold setting is based on a so-called constant false alarm rate(CFAR) criterion, which will provide small probability of false alarm and large probability of signal detection compared with the fixed threshold algorithm. The noise and interference are estimated by integrating the total received signal power. The performance of the proposed acquisition scheme is analytically evaluated in terms of the detection probability P_d, the false alarm probability P_fa, the mean acquisition time TMA. Analysis in theory and numerical results show that the proposed scheme may actually perform somewhat better than the fixed threshold schemes.

Citation Download Citation

Jiachi Wang, Xiulin Hu, and Yunyu Zhang "Code acquisition with adaptive threshold for TH-UWB systems", Proc. SPIE 5985, International Conference on Space Information Technology, 59852G (4 January 2006); https://doi.org/10.1117/12.657672

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