대한전자공학회논문지TC (Journal of the Institute of Electronics Engineers of Korea TC)

대한전자공학회 (The Institute of Electronics and Information Engineers)
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Coherent IR-UWB 시스템을 위한 펄스 반복 전송 기반의 선택적 검출 기법

Pulse Repetition Based Selective Detection Scheme for Coherent IR-UWB Systems

  • 김세권 (숭실대학교 정보통신전자공학부) ;
  • 김재운 (숭실대학교 정보통신전자공학부) ;
  • 신요안 (숭실대학교 정보통신전자공학부)
  • Kim, Se-Kwon (School of Electronic Engineering, Soongsil University) ;
  • Kim, Jae-Woon (School of Electronic Engineering, Soongsil University) ;
  • Shin, Yo-An (School of Electronic Engineering, Soongsil University)
  • 발행 : 2008.03.25
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초록

본 논문에서는 Coherent 임펄스 라디오-초광대역 (Impulse Radio-Ultra Wide Band; IR-UWB) 시스템에서 복잡도와 비트오율 (Bit Error Rate; BER) 성능을 모두 고려하기 위한 펄스 반복 전송 기반의 선택적 검출 기법을 제안한다. 우선 제안된 기법은 시스템의 복잡도를 고려하기 위해, Coherent IR-UWB 송신기에서는 매우 간단한 시간 다이버시티 알고리즘인 일반적인 PRC (Pulse Repetition Coding)와 동일하게 UWB 신호를 반복 전송하게 된다. 하지만, 제안된 기법은 시스템의 BER 성능을 효과적으로 향상시키기 위해, Coherent IR-UWB 수신기에서는 반복 전송되어 수신된 신호의 신호대잡음비(Signal-to-Noise Ratio)를 추정하여 선택적으로 신호 검출을 수행한다. 그러므로, 제안된 기법은 일반적인 PRC 알고리즘과 비교하여 시스템의 복잡도를 거의 증가시키지 않고 Coherent IR-UWB 시스템의 BER 성능을 효과적으로 향상시킨다.

We propose a selective detection scheme based on pulse repetition considering the BER (Bit Error Rate) performance and complexity of coherent IR-UWB (Impulse Radio-Ultra Wide Band) systems. To take system complexity into account, the proposed scheme transmits the UWB signals by pulse repetition at the transmitter, like conventional PRC (Pulse Repetition Coding). However, to effectively improve BER performance of the system, the proposed scheme performs selective detection by estimating the SNR (Signal-to-Noise Ratio) of the received pulse-repeated signal at the UWB receiver. Hence, the proposed scheme effectively improves BER performance of the coherent IR-UWB systems without increasing system complexity, as compared to the conventional PRC algorithm.

키워드

참고문헌

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