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

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Performance Analysis of Symbol Mapping Diversity in Coded MIMO-OFDM Systems over Fading Channels

페이딩 채널에서 부호화된 MIMO-OFDM 시스템의 심볼맵핑 다이버시티 성능 분석

  • 박원석 (성균관대학교 정보통신공학부 통신 및 부호이론 연구실) ;
  • 강진환 (성균관대학교 정보통신공학부 통신 및 부호이론 연구실) ;
  • 김상효 (성균관대학교 정보통신공학부 통신 및 부호이론 연구실)
  • Received : 2010.02.08
  • Accepted : 2010.03.26
  • Published : 2010.04.30
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Abstract

In this paper, we analyse HARQ scheme that utilizes symbol mapping diversity (SMD) techniques such as MDSM and CORE. The exploitation feasibility of MDSM and CORE is evaluated in the perspective of system complexity and storage capacity as we consider a BICM system based on 3GPP LTE standards and multipath fading channels. Also, a simple method which obtains SMD effects by circularly shifting bit-block in a codeword is proposed. The experimental results performed in BICM-OFDM systems with single antenna as well as multiple antennas show that frame error rate of the proposed method is close to that of CORE while having lower complexity.

본 논문에서는 3GPP LTE 하향링크 표준에 기반한 BICM 시스템에서 기존의 심볼 맵핑 다이버시티를 이용한 HARQ 기술들(e.g., MDSM, CORE)을 비교 분석한다. 다중경로 페이딩 채널과 오류정정부호가 적용된 보다 실제 적인 무선통신 환경을 고려함으로써 기존 기법들의 실제 시스템으로의 구현 적합성을 판단하고, 구현 복잡도 및 저장 공간을 줄이면서 이들에 준하는 프레임 오율 성능을 나타내는 간단한 기법을 제안한다. 그리고 다수의 송 수신 안테나를 이용하는 MIMO-OFDM 시스템에 다양한 심볼 맵핑 다이버시티 기법들을 적용하고, 이들의 오율 성능을 분석한다.

Keywords

References

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