QPSK 위성통신 채널에 대한 효율적 성능 평가 기법

Efficient Performance Evaluation Method for QPSK Satellite Communication Channels

  • 김준명 (충북대학교 전파공학과 위성통신시스템 연구실) ;
  • 정창봉 (충북대학교 전파공학과 위성통신시스템 연구실) ;
  • 김용섭 (충북대학교 전파공학과 위성통신시스템 연구실) ;
  • 황인관 (충북대학교 전파공학과 위성통신시스템 연구실)
  • 발행 : 2000.05.01

초록

본 논문에서는 센트럴 모우먼트 알고리즘을 디지틀 통신 채널에 적용함으로써 기존의 시뮬레이션인 기법인 Conventional Importance Samping와 Improved Importance Sampling 으로 해결할 수 없었던 문제점들의 해결 뿐 아니라 수행시간의 획기적인 개선도 가능하게 하였다. 즉 디지털 통신 채널의 수신단에서 잡음이 혼합된 수신신호의 센트랄 모우멘트를 측정하여 수신 신호의 확률적인 특성인 누적확률분포를 구함으로써 채널의 성능을 평가한다. 제안 알고리즘을 검증하기 위하여 Cadence사의 시뮬레이션 프로그램인 SPW를 이용하여 QPSK 위성통신 채널을 구현한 후 시뮬레이션 수행시간의 개선 효과를 확인하였다.

In this paper, not only the problems which could not be solved with Conventional Importance Sampling and Improved Importance Sampling of the early simulation method, and but also the improvements obtained in terms of computer run-time were studied, by applying the central moment algorithm to the digital communication channels. That is, the channel performance evaluation is done for obtaining the cumulative probability function of the statistical characteristics of received signal with estimating the central moment of the received signal mixed the noise in the digital communication receiver. We confirm the simulation run-time after we implemented the quaternary phase shift keying(QPSK) satellite communication channels using the Signal Processing Worksystem(SPW) of the Cadence incorporation to verify the suggested algorithm.

키워드

참고문헌

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