Waveform-independent frame-timing acquisition for UWB signals

José A. López-Salcedo, Gregori Vázquez

Research output: Contribution to journalArticleResearchpeer-review

8 Citations (Scopus)

Abstract

In this paper, the problem of frame-level symbol timing acquisition for UWB signals is addressed. The main goal is the derivation of a frame-level timing estimator which does not require any prior knowledge of neither the transmitted symbols nor the received template waveform. The independence with respect to the received waveform is of special interest in UWB communication systems, where a fast and accurate estimation of the end-to-end channel response is a challenging and computationally demanding task. The proposed estimator is derived under the unconditional maximum likelihood criterion, and because of the low power of UWB signals, the low-SNR assumption is adopted. As a result, an optimal frame-level timing estimator is derived which outperforms existing acquisition methods in low-SNR scenarios. © 2006 IEEE.
Original languageEnglish
Pages (from-to)279-289
JournalIEEE Transactions on Signal Processing
Volume55
DOIs
Publication statusPublished - 1 Jan 2007

Keywords

  • Frame-timing
  • Nondata aided
  • Synchronization
  • Ultra-wideband (UWB) communications

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