Communication and TOA Estimation with Differential Impulse Radio UWB systems

Author

Tchere, G.F. ; Ubolkosold, P. ; Knedlik, S. ; Loffeld, O.

Author_Institution

Univ. of Siegen, Siegen

fYear

2007

fDate

22-22 March 2007

Firstpage

87

Lastpage

95

Abstract

Differential Transmitted Reference (DTR) ultra-wideband (UWB) impulse radio (IR) system is one of the most attractive solutions for realizing non-coherent low data rate and low complexity UWB systems. Indeed, Transmitted Reference (TR) signaling, in combination with an Autocorrelation Receiver(AcR), allows a lower design complexity compared to coherent receivers. In this paper, the design of DTR-UWB radio modules for wireless sensor networks (WSN), capable of communication and localization, is addressed. Bit error rate (BER) performance of the DTR-UWB receivers conditioned on a channel realization is analyzed. The modelling of low complexity DTR-UWB systems using equivalent system models is presented. The average BER is verified through simulation for different signal-to-noise ratio (SNR) values, and is also compared to the average BER derived using the equivalent system model. We suggest a data-aided time of arrival (TOA) estimator for DTR-UWB systems, using least squares estimation technique and the equivalent system model.

Keywords

correlation methods; least squares approximations; time-of-arrival estimation; ultra wideband communication; wireless sensor networks; DTR-UWB radio modules; DTR-UWB receivers; TOA estimation; autocorrelation receiver; bit error rate performance; channel realization; differential transmitted reference; equivalent system models; impulse radio UWB systems; least squares estimation; signal-to-noise ratio; time of arrival estimator; transmitted reference signaling; ultra-wideband impulse radio system; wireless sensor networks; Autocorrelation; Bit error rate; Least squares approximation; Performance analysis; Receivers; Signal design; Signal to noise ratio; Time of arrival estimation; Ultra wideband technology; Wireless sensor networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Positioning, Navigation and Communication, 2007. WPNC '07. 4th Workshop on

Conference_Location

Hannover

Print_ISBN

1-4244-0871-7

Electronic_ISBN

1-4244-0871-7

Type

conf

DOI

10.1109/WPNC.2007.353617

Filename

4167823