Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Rapid and Reliable Signal Acquisition Scheme for Noncoherent UWB Systems in Multipath Channel

다중경로 채널 환경에서 Noncoherent UWB 시스템을 위한 고속 고신뢰의 동기획득 기법

  • Kim, Jae-Woon (School of Electronic Engineering, Soongsil University) ;
  • Yang, Suck-Chel (School of Electronic Engineering, Soongsil University) ;
  • Choi, Sung-Soo (Power Telecommunication Network Group, Korea Electrotechnology Research Institute) ;
  • Shin, Yo-An (School of Electronic Engineering, Soongsil University)
  • 김재운 (숭실대학교 정보통신전자공학부) ;
  • 양석철 (숭실대학교 정보통신전자공학부) ;
  • 최성수 (한국전기연구원 전기정보망기술연구그룹) ;
  • 신요안 (숭실대학교 정보통신전자공학부)
  • Published : 2005.11.26
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Abstract

In this paper, we propose to extend the TSS-LS (Two-Step Search scheme with Linear search based Second step) scheme which was already proposed by the authors for coherent UWB (Ultra Wide Band) systems, to rapid and reliable acquisition of noncoherent UWB systems in multipath channels. The proposed noncoherent TSS-LS employing simple energy window banks utilizes two different thresholds and search windows to achieve fast acquisition. Furthermore, the linear search is adopted for the second step in the proposed scheme to correctly find the starting point in the range of effective delay spread of the multipath channels, and to obtain reliable BER (Bit Error Rate) performance of the noncoherent UWB systems. Simulation results show that the proposed TSS-LS can achieve significant reduction of the required mean acquisition time as compared to general search schemes. In addition, the proposed scheme achieves quite good BER performance, which is favorably comparable to the case of ideal perfect timing.

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