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Non-coherent detection of impulse radio UWB signals based on fourth order statistics

Khan, Muhammad Gufran; Sällberg, Benny; Nordberg, Jörgen; Tufvesson, Fredrik LU and Claesson, Ingvar (2011) In Wireless Personal Communications
Abstract
Low-complex and low power non-coherent energy detector (ED) is interesting for low data rate impulse radio (IR) ultra wideband (UWB) systems but, compared to coherent receivers, it suffers from a loss in performance due to low signal-to-noise ratio (SNR) at the detector. In addition, the performance of an ED strongly depends on the integration interval (window size) of the integrator and the window position. A non-coherent kurtosis detector (KD) and a fourth-order detector (FD), which can discriminate between Gaussian noise signals and non-Gaussian IR-UWB signals by directly

estimating the fourth-order moment of the received signal, are presented. The performance of the detectors is evaluated using real channels measured in a... (More)
Low-complex and low power non-coherent energy detector (ED) is interesting for low data rate impulse radio (IR) ultra wideband (UWB) systems but, compared to coherent receivers, it suffers from a loss in performance due to low signal-to-noise ratio (SNR) at the detector. In addition, the performance of an ED strongly depends on the integration interval (window size) of the integrator and the window position. A non-coherent kurtosis detector (KD) and a fourth-order detector (FD), which can discriminate between Gaussian noise signals and non-Gaussian IR-UWB signals by directly

estimating the fourth-order moment of the received signal, are presented. The performance of the detectors is evaluated using real channels measured in a corridor, an office and a laboratory environment. The results

show that bit-error-rate (BER) performance of the proposed KD receiver is better than the ED receiver only under certain conditions, while the FD receiver is slightly better than the ED in low SNR region and its performance improves as the SNR increases. In addition, the performance of the FD receiver is less sensitive to overestimation of the integration interval

making it relatively robust to variations of the channel delay spread. Finally, a criteria for the selection of integration time of the proposed detector is suggested. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
UWB communications, Non-coherent detection, Higher-order moments, Channel measurement
in
Wireless Personal Communications
publisher
Kluwer
external identifiers
  • wos:000314089600003
  • scopus:84874650985
ISSN
1572-834X
DOI
10.1007/s11277-011-0437-x
language
English
LU publication?
yes
id
a157de30-b8a5-4ae6-9db3-70227eb339f8 (old id 2440899)
date added to LUP
2012-04-19 12:35:53
date last changed
2017-09-10 04:15:23
@article{a157de30-b8a5-4ae6-9db3-70227eb339f8,
  abstract     = {Low-complex and low power non-coherent energy detector (ED) is interesting for low data rate impulse radio (IR) ultra wideband (UWB) systems but, compared to coherent receivers, it suffers from a loss in performance due to low signal-to-noise ratio (SNR) at the detector. In addition, the performance of an ED strongly depends on the integration interval (window size) of the integrator and the window position. A non-coherent kurtosis detector (KD) and a fourth-order detector (FD), which can discriminate between Gaussian noise signals and non-Gaussian IR-UWB signals by directly<br/><br>
estimating the fourth-order moment of the received signal, are presented. The performance of the detectors is evaluated using real channels measured in a corridor, an office and a laboratory environment. The results<br/><br>
show that bit-error-rate (BER) performance of the proposed KD receiver is better than the ED receiver only under certain conditions, while the FD receiver is slightly better than the ED in low SNR region and its performance improves as the SNR increases. In addition, the performance of the FD receiver is less sensitive to overestimation of the integration interval<br/><br>
making it relatively robust to variations of the channel delay spread. Finally, a criteria for the selection of integration time of the proposed detector is suggested.},
  author       = {Khan, Muhammad Gufran and Sällberg, Benny and Nordberg, Jörgen and Tufvesson, Fredrik and Claesson, Ingvar},
  issn         = {1572-834X},
  keyword      = {UWB communications,Non-coherent detection,Higher-order moments,Channel measurement},
  language     = {eng},
  publisher    = {Kluwer},
  series       = {Wireless Personal Communications},
  title        = {Non-coherent detection of impulse radio UWB signals based on fourth order statistics},
  url          = {http://dx.doi.org/10.1007/s11277-011-0437-x},
  year         = {2011},
}