Skip to content

Advertisement

  • Research Article
  • Open Access

Digital Receiver Design for Transmitted Reference Ultra-Wideband Systems

EURASIP Journal on Wireless Communications and Networking20092009:315264

https://doi.org/10.1155/2009/315264

  • Received: 30 June 2008
  • Accepted: 1 February 2009
  • Published:

Abstract

A complete detection, channel estimation, synchronization, and equalization scheme for a transmitted reference (TR) ultra-wideband (UWB) system is proposed in this paper. The scheme is based on a data model which admits a moderate data rate and takes both the interframe interference (IFI) and the intersymbol interference (ISI) into consideration. Moreover, the bias caused by the interpulse interference (IPI) in one frame is also taken into account. Based on the analysis of the stochastic properties of the received signals, several detectors are studied and evaluated. Furthermore, a data-aided two-stage synchronization strategy is proposed, which obtains sample-level timing in the range of one symbol at the first stage and then pursues symbol-level synchronization by looking for the header at the second stage. Three channel estimators are derived to achieve joint channel and timing estimates for the first stage, namely, the linear minimum mean square error (LMMSE) estimator, the least squares (LS) estimator, and the matched filter (MF). We check the performance of different combinations of channel estimation and equalization schemes and try to find the best combination, that is, the one providing a good tradeoff between complexity and performance.

Keywords

  • Channel Estimation
  • Timing Estimate
  • Equalization Scheme
  • Full Article
  • Good Tradeoff

Publisher note

To access the full article, please see PDF.

Authors’ Affiliations

(1)
Faculty of Electrical Engineering, Mathematics and Computer Science (EEMCS), Delft University of Technology, Mekelweg 4, 2628 CD Delft, The Netherlands

Copyright

Advertisement