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

Author

Khan, Muhammad Gufran ; Sällberg, Benny ; Nordberg, Jörgen ; Claesson, Ingvar

Author_Institution

Dept. of Electr. Eng., Blekinge Inst. of Technol., Karlskrona, Sweden

Volume

15

Issue

6

fYear

2011

fDate

6/1/2011 12:00:00 AM

Firstpage

614

Lastpage

616

Abstract

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.

Keywords

adaptive estimation; channel estimation; pulse position modulation; radio receivers; stochastic processes; time-varying channels; ultra wideband communication; wireless channels; adaptive estimation; channel state information; data aided WNCR; decision directed approach; energy detection; impulse radio UWB PPM signal; noncoherent receiver; nondata aided scheme; pulse position modulated; robust weight estimation; stochastic data; time varying channel; Channel estimation; Estimation; Indexes; Noise; Receivers; Robustness; Ultra wideband technology; Energy detection; adaptive estimation; pulse-position modulation; ultra-wideband;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2011.040711.102583

Filename

5752792