Volume 15, Issue 1 (2015)                   MJEE 2015, 15(1): 28-35 | Back to browse issues page

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Taghipour J, Abbasi-Moghadam D. A Blind Energy Detector for Impulse Radio UWB OOK Systems. MJEE. 15 (1) :28-35
URL: http://mjee.modares.ac.ir/article-17-4371-en.html
1- Department of Electrical and Computer eng., Tarbiat Modares University, Tehran, Iran,
2- Electrical Engineering Department, Shahid Bahonar University of Kerman, Kerman, Iran,
Abstract:   (4849 Views)
 Energy detector is one of the non-coherent receivers for impulse radio ultra-wideband (IR-UWB) systems using on-off keying (OOK) modulation. Energy detection for IR-UWB OOK systems gets accomplished based on a threshold value. In these systems, the threshold value depends on several parameters that should be determined in the receiver.  In this paper, we propose a blind approach to estimate proper thresholds for the symbol decision. The performance of the proposed method turns out to be asymptotically comparable to that of the optimal threshold selection. The proposed algorithm was also improved using an optimum integration interval. By using a blind estimating of the channel time delay spread, the integration interval was adjusted. Simulation results show that this method improves the performance about 1.5 dB in BER of 10-4.
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Received: 2016/07/13 | Accepted: 2016/11/21 | Published: 2038/01/19

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