Robust Weighted Non-Coherent Receiver for Impulse Radio UWB PPM Signals

This letter proposes an energy detection based robust weight estimation scheme for pulse-position modulated (PPM) impulse radio ultra-wideband (IR-UWB) signals using weighted non-coherent receiver (WNCR). Conventional data-aided WNCR (DA-WNCR) scheme estimates the weighting coefficients, or channel...

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Bibliographic Details
Published in:IEEE communications letters 2011-06, Vol.15 (6), p.614-616
Main Authors: Khan, M. G., Sallberg, B., Nordberg, J., Claesson, I.
Format: Article
Language:English
Subjects:
adaptive estimation
Applied sciences
Channel estimation
Channels
Detection, estimation, filtering, equalization, prediction
Energy detection
Energy use
Estimates
Estimation
Exact sciences and technology
Impulses
Indexes
Information, signal and communications theory
Modulation, demodulation
Noise
Pulse position modulation
Radio
Receivers
Robustness
Signal and communications theory
Signal, noise
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
Ultra wideband technology
ultra-wideband
Ultrawideband
UWB
Weighting
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Summary:This letter proposes an energy detection based robust weight estimation scheme for pulse-position modulated (PPM) impulse radio ultra-wideband (IR-UWB) signals using weighted non-coherent receiver (WNCR). Conventional data-aided WNCR (DA-WNCR) scheme estimates the weighting coefficients, or channel state information (CSI), using a large number of training symbols over time-varying channels. In contrast, the proposed Robust WNCR (R-WNCR) scheme is non-data-aided (NDA), adaptive and robust to channel variations. The proposed R-WNCR estimates the weighting coefficients adaptively based on the received stochastic data, and the weight estimation process is refined using a decision directed approach.
ISSN:1089-7798
1558-2558
1558-2558
DOI:10.1109/LCOMM.2011.040711.102583