Performance Analysis of MCR-DS/CDMA Systems Using a Simplified Expression for the Improved Gaussian Approximation

향상된 정규 근사법의 간략화된 표현을 이용한 MCR-DS/CDMA 시스템의 성능 분석

  • 주민철 (한국전자부품 연구소) ;
  • 김귀훈 (한국과학기술원 전기 및 전자공학과) ;
  • 김형명 (한국과학기술원 전기 및 전자공학과)
  • Published : 2000.08.01

Abstract

In this paper, we investigate the performance of asynchronous multiple-chip-rate (MCR)-DS/CDMA systems, where singles are transmitted at different chip rates, processing gains, and transmitted powers according to the required services and their own bit rates. A simplified expression for the improved Gaussian approximation (SEIGA), which is hewn for as a very accurate and simple tool for the performance evaluation, is applied to MCR systems, The correlations between chip waveforms and integrations are utilized instead of correlations between chip sequences which are used in conventional method [6] [7][8], and since this approach makes use of the system model parameter directly, we obtain more direct relationship among system parameters. Simulation results show that the performance of MCR-DS/CDMA systems can be evaluated more accurately by using the proposed procedure than by using the GA.

본 논문에서는 요구되는 서비스와 비트율에 따라서 칩률반송 주파수 처리 이득 그리고 전송 전력을 다르게 할당하는 비동기 multiple-chip-rate(MCR)-DS/CDMA 시스템의 성능을 분석하였다 향상된 정규 근사법의 간략화된 표현(SEIGA)은 성능 분석 중 비트 오율을 간단하게 하면서도 정확히 얻을 수 있는 방법으로 알려져 있는데 본 논문에서는 이방법을 MCR 시스템의 분석에 적용하여 그 결과를 얻도록 하였다 기존의 방법에서 사용하는 직접적으로 사용하기 때문에 계수사이의 직접전인 관계를 알 수 있다 제안된 과정을 이용하여 얻은 MCR-DS/CDMA 시스템의 성능 분석 결과를 모의 실험을 통하여 보여 주었다.

Keywords

References

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