Journal of Communications and Networks

  • 제10권1호
  • /
  • Pages.63-70
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  • 2008
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  • 1229-2370(pISSN)
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  • 1976-5541(eISSN)
한국통신학회 (The Korean Institute of Commucations and Information Sciences)
권호 표지

Suppression of IEEE 802.11a Interference in TH-UWB Systems Using Singular Value Decomposition in Wireless Multipath Channels

  • Xu, Shaoyi (Graduate School of Information Technology and Telecommunications, Inha University) ;
  • Kwak, Kyung-Sup (Graduate School of Information Technology and Telecommunications, Inha University)
  • 발행 : 2008.03.31
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초록

Narrow-band interference (NBI) from the coexisting narrow-band services affects the performance of ultra wideband (UWB) systems considerably due to the high power of these narrow-band signals with respect to the UWB signals. Specifically, IEEE 802.11a systems which operate around 5 GHz and overlap the band of UWB signals may interfere with UWB systems significantly. In this paper, we suggest a novel NBI suppression technique based on singular value decomposition (SVD) algorithm in time hopping UWB (TH-UWB) systems. SVD is used to approximate the interference which then is subtracted from the received signals. The algorithm precision and closed-form bit error rate (BER) expression are derived in the wireless multipath channel. Comparing with the conventional suppression methods such as a notch filter and a RAKE receiver, the proposed method is simple and robust and especially suitable for UWB systems.

키워드

참고문헌

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