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2013-02-13
Th -UWB Receiver Based on Two Pdfs Approximation in Multiuser Systems
By
Progress In Electromagnetics Research, Vol. 137, 101-116, 2013
Abstract
As the distribution of the multiuser interference plus noise in time-hopping ultrawide bandwidth (TH-UWB) systems can not be reliably approximated by Gaussian probability density function (PDF), the bit error rate (BER) performance of the conventional matched filter receiver in TH-UWB multiuser systems degrades. In this paper we study a novel TH-UWB receiver based on two PDFs approximating the distribution of the multiuser interference plus noise. Firstly we investigate the difference between the distribution of the multiuser interference plus noise when the received pulse is collided by interfering pulses and that when it is not. Then two PDFs are developed to approximate the distribution of multiuser interference plus noise in these two cases respectively instead of using one PDF for both cases as done in other research works. Based on these two PDFs, a new detection scheme of TH-UWB receiver is proposed. The results show that BER performance of the proposed receiver is improved by 50% or more as compared to the conventional matched filter receiver, blinking receiver, Gaussian mixture receiver and p-order receiver using simulations.
Citation
Wang Chen Qiang Gao Hua-Gang Xiong Li Fei Qiong Li , "Th -UWB Receiver Based on Two Pdfs Approximation in Multiuser Systems," Progress In Electromagnetics Research, Vol. 137, 101-116, 2013.
doi:10.2528/PIER12122706
http://www.jpier.org/PIER/pier.php?paper=12122706
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