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 Precoded MIMO MMSE Receivers in Transmit-Correlated Rayleigh Channels

송신 상관된 레일리 채널에서 프리코더를 갖는 MIMO MMSE 수신기의 성능 분석

  • 김원섭 (국방과학연구소 정밀유도기술센터)
  • Received : 2013.01.09
  • Accepted : 2013.07.09
  • Published : 2013.07.31
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Abstract

In this paper, the multiple-input multiple-output (MIMO) system with a precoder is considered in the transmit-correlated Rayleigh channels. We specifically target the MIMO system employing the minimum mean square error receivers. Based on random matrix theory, we first present a direct and generalized formulation for deriving a probability density function (PDF) of the signal-to-interference-plus-noise ratio (SINR). Then, we derive the accurate closed-form SINR PDFs for a small number of transmit and receive antennas. Based on the SINR PDFs, tight closed-form approximations of the symbol error rate (SER) are derived. Our analysis suggests that the SER approximations can be used to accurately estimate the error probabilities or as a useful tool for the system design.

이 논문에서는 송신 상관된 레일리 페이딩 채널에서 프리코더를 갖는 다중 입출력 안테나 시스템이 고려된다. 특히 최소평균제곱오차 수신기를 적용한 다중 입출력 안테나 시스템을 대상으로 한다. 임의 행렬 이론에 기초하여, 신호 대 간섭 및 잡음비의 확률 밀도 함수를 유도하기 위한 정확하고 일반화된 식을 유도한다. 그리하여 적은 수의 송신 및 수신 안테나에 대하여 정확한 폐쇄형 신호 대 간섭 및 잡음비의 확률 밀도 함수 식을 제안한다. 또한, 신호 대 간섭 및 잡음비의 확률 밀도 함수 식에 기초하여 폐쇄형 심볼 오류율 근사식을 제안한다. 제안하는 심볼오류율 분석결과는 오류 확률을 정확하게 예측하거나, 시스템 디자인을 위한 유용한 툴로서 사용될 수 있을 것으로 예상된다.

Keywords

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