The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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MRC Diversity Analysis for Square M-QAM in Nakagkmi-m Fading Channels

m-분포 나카가미 페이딩 채널에서 정방형 M-QAM의 MRC 다이버시티 성능분석

  • 이영환 (한국전자통신연구원 표준연구센터) ;
  • 이재윤 (대전대학교 정보통신공학과) ;
  • 윤동원 (대전대학교 정보통신공학과) ;
  • 조평동 (한국전자통신연구원 표준연구센터)
  • Published : 2003.11.01
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Abstract

This paper presents and analyses the exact and general closed-form expression for the average bit error probability of M-ary square quadrature amplitude modulation (QAM) for maximal ratio combining (MRC) diversity reception in frequency-nonselective Nakagami-m fading. An L-branch Maximal ratio combining diversity technique with independent or correlated fading cases is considered. Numerical results demonstrate the error performance improvement by employing with the use of MRC diversity reception. The new expressions presented here can offer a convenient way to evaluate the performance of an arbitrary square M-W square QAM with an MRC diversity combiner for various cases of practical interest.

이 논문에서는 주파수 비 선택적 m분포 나카가미 페이딩 채널에서 정방형 M-QAM 신호에 대하여 MRC 다이버시티 적용시 정확하고 일반화된 평균 비트 에러 확률식을 closed-form으로 유도하고 성능을 분석한다. 독립된 페이딩 환경과 상관된 페이딩 환경에 대하여 각각 L개의 브랜치를 가지는 MRC 다이버시티를 고려하며. 성능 분석을 통하여 에러 성능이 향상됨을 보인다. 이 논문에서 제시되는 새로운 비트 에러 확률 식들은 이동 통신의 페이딩 채널에서 MRC 다이버시티가 적용된 임의의 정방형 M-QAM 신호에 대한 성능을 계산하고 분석하는데 유용한 방법을 제공한다.

Keywords

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