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Noncoherent weighted detection for time reversal UWB systems: Energy and kurtosis detectors

Vakili, V. T ; Sharif University of Technology

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  1. Type of Document: Article
  2. Publisher: Praise Worthy Prize S.r.l
  3. Abstract:
  4. Time reversal is a technique in which a signal is pre-filtered such that it focuses both in time and space. Spatial focusing reduces interference to other co-existing systems and temporal focusing concentrates the received power in a very short interval. Energy detector is a practical receiver for ultra-wideband (UWB) time reversed signals due to its low-complexity and low-cost implementation. However, selection of an optimum integration interval to minimize the bit error rate is a major problem. Weighted energy detection is an effective technique to overcome this problem and enhance the performance of energy detectors. However, this improvement is achieved at the expense of non-trivial complexity. This paper proposes the combination of time reversal technique with a recently presented noncoherent detection scheme, called kurtosis detector. Simulation results show that time reversal kurtosis detection can achieve the performance of time reversal weighted energy detection with a considerable reduction in the complexity. In addition, weighted kurtosis detection is also investigated
  5. Keywords:
  6. Energy detection ; Kurtosis ; Noncoherent receiver ; PPM ; Time reversal ; Ultra-wideband (UWB) ; Weighted processing
  7. Source: International Journal on Communications Antenna and Propagation ; Volume 1, Issue 2 , 2011 , Pages 174-181 ; 20395086 (ISSN)
  8. URL: http://www.praiseworthyprize.com/IRECAP-latest/IRECAP_vol_1_n_2.html#Noncoherent_Weighted_Detection_for_Time_Reversal_UWB_Systems:_Energy_and_Kurtosis_Detectors