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

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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On the Optimal Antenna Weighting Method for Closed-Loop Transmit Antenna Diversity with Average and Peak Power Constraints

평균전력과 첨두전력 제한이 있는 폐루프 송신 안테나 다이버스티 시스템에서의 최적 안테나 가중치 방식 연구

  • 이예훈 (서울산업대학교, 전자정보공학과)
  • Published : 2007.07.31
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Abstract

We consider an optimal antenna weighting scheme for a closed-loop transmit antenna diversity system in Rayleigh fading channels. We derive a closed-form expression for the optimal transmitter weights that minimize the average bit error rate (BER) subject to fixed average and peak transmit power constraints. It is shown that the peak power limitation degrades the average BER performance more significantly as the available average power and/or the number of transmit antennas increase.

본 논문에서는 레일리 페이딩 채널환경에서 폐루프 송신 안테나 다이버시티 시스템을 위한 최적의 안테나 가중치 방식을 연구한다. 평균전력 및 첨두 전력의 제한이 있는 경우에 폐루프 송신 안테나 다이버시티의 평균 비트 오류율을 최소화하는 최적의 송신 안테나 가중치를 닫힌 형식의 수학식으로 유도한다. 본 논문의 결과로부터 첨두 전력의 제한으로 인한 평균 비트 오류율 성능의 열화는 사용가능 한 평균전력이 커질수록 그리고/또는 송신 안테나 개수가 증가할수록 그 성능 열화의 정도가 더욱 커짐을 알 수 있다.

Keywords

References

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