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Increasing the Performance of Energy-Detection Based UWB Demodulator with a Supplementary Integration BlockPOPA, A.
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ultra-wideband communications, pulse-position modulation, non-coherent detection, energy detection, bit-error-rate
ultra(9), systems(9), wideband(8), energy(7), communications(7), performance(6), radio(5), communication(5), pulse(4), detection(4)
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About this article
Date of Publication: 2012-08-31
Volume 12, Issue 3, Year 2012, On page(s): 27 - 32
ISSN: 1582-7445, e-ISSN: 1844-7600
Digital Object Identifier: 10.4316/AECE.2012.03004
Web of Science Accession Number: 000308290500004
SCOPUS ID: 84865838612
In this paper it is investigated the non-coherent demodulation of the 2PPM modulated UWB signal, based on energy-detection. This type of demodulation leads to a simple receiver architecture, low power consumption and the benefit of multipath energy capture. However, this technique is very sensitive to noise and channel interference. To minimize this drawback, optimizations have been proposed with respect to the reduction of the integration windows size and bandwidth of input matched filter. An appropriate ultra-wideband multipath channel model such as IEEE 802.15.3a may be considered for this optimization process. Basic method uses a single integration window with a constant gain, capturing only significant useful power of the signal replicas presented in the front of the received signal, and neglecting later signal. Instead of a rectangular integration window, it is proposed to use an integration window with a linear descending gain. This may be simply obtained by adding a supplementary integration block. In this way, the front-side useful signal power is integrated with a better gain in comparison with later, predominant noise, received signal. The simulations show an improvement in bit error rate performance relative to the basic method of energy-detection.
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 An improvement for hard-decision detection of 2PPM modulated IR-UWB signals, Popa, Adrian, International Symposium on Signals, Circuits and Systems ISSCS2013, ISBN 978-1-4673-6143-9, 2013.
Digital Object Identifier: 10.1109/ISSCS.2013.6651206 [CrossRef]
 A 2-PPM CMOS modulator for IR-UWB signals, Popa, Adrian, Alexandru, N.D., Bozomitu, Radu Gabriel, 2016 International Conference on Communications (COMM), ISBN 978-1-4673-8197-0, 2016.
Digital Object Identifier: 10.1109/ICComm.2016.7528303 [CrossRef]
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Faculty of Electrical Engineering and Computer Science
Stefan cel Mare University of Suceava, Romania
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