Multiple-antenna receiving and frequency domain equalization in transmitted-reference UWB systems

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Abstract

A multiple-antenna receiving and combining scheme is proposed for high-data-rate transmitted-reference (TR) Ultra-Wideband (UWB) systems. The nonlinearity of the inter-symbol interference (ISI) model is alleviated via simple antenna combining. Under the simplified ISI model, frequency domain equalization (FDE) is adopted and greatly reduces the complexity of the equalizer. A simple estimation algorithm for the simplified ISI model is presented. Simulation results demonstrate that compared to the single receive antenna scheme, the proposed method can obtain a significant diversity gain and eliminate the BER floor effect. Moreover, compared to the complex second-order time domain equalizer, FDE showed better performance robustness in the case of imperfect model estimation.

Original languageEnglish
Pages (from-to)2405-2408
Number of pages4
JournalIEICE Transactions on Communications
VolumeE91-B
Issue number7
DOIs
StatePublished - 2008

Keywords

  • Frequency domain equalization
  • Multiple-antenna receiving
  • Transmitted-reference
  • Ultra-Wideband

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