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

대한전자공학회 (The Institute of Electronics and Information Engineers)
권호 표지

전송 안테나 및 성상도 선택과 전력 할당을 적용한 MIMO 다중 사용자 시스템의 성능분석

Performance Analysis for MIMO Multi-user system employing selection of transmit antennas, constellations and powers allocation

  • 유현 (인하대학교 정보통신대학원) ;
  • 김진수 (인하대학교 정보통신대학원) ;
  • 황현철 (인하대학교 대학원) ;
  • 김백현 (철도기술연구원) ;
  • 이형기 (재능대학 정보통신과) ;
  • 곽경섭 (인하대학교 정보통신대학원)
  • Yoo Hyun (Graduate School of Information Technology & Telecommunication, Inha University) ;
  • Kim JinSu (Graduate School of Information Technology & Telecommunication, Inha University) ;
  • Hwang HyeonChyeol (Graduate School, Inho University) ;
  • Kim BaekHyun (Korea Railload Research Institute) ;
  • Lee HyungKi (Information & Communication department, JaNeung College) ;
  • Kwak KyungSup (Graduate School of Information Technology & Telecommunication, Inha University)
  • 발행 : 2005.09.01
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초록

본 논문에서 장시간 귀환 기법과 단시간 귀환 기법을 결합하는 MIMO 다중 사용자 시스템을 제안하고 성능을 분석하였다 통화 초기에 목표 심볼 오류와 목표 전송를을 고려하여 활성 안테나 수, 성상도, 전송 전력과 같은 장시간 귀환 기법을 수신단에서 전송단에 귀환한다. 이 후에 수신단에서 단시간귀환기법으로서 활성안테나 인덱스를 주기적으로 전송단에 알려준다. 모의실험을 통해 장시간 귀환 기법 또는 단시간 귀환 기법만을 적용하였을 경우보다 장시간 귀환 기법 방법에 단시간 귀환 기법을 적용하였을 경우에 우수한 성능 개선이 있음을 확인할 수 있었다.

In this paper, we suggest the scheme combining long-term feedback and short-term feedback in MIMO multi-user system and analyze its system performance. At the beginning of communication, long-term feedback is fed back to transmitter such as the number of active antennas, constellations, and transmission powers which are determined to satisfy the given target symbol error and target data rate for each user. After this, short-term feedback of active antenna index is fed back periodically Simulation results show the proposed scheme outperforms better than long-term feedback or short-term feedback information scheme.

키워드

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