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

The Institute of Electronics and Information Engineers (대한전자공학회)
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A Performance Comparison of MIMO Detection Algorithms in Frequency Selective Fading Channel with Imperfect Channel State Information

주파수 선택성 채널에서 불완전한 채널상태정보를 갖는 MIMO 검파 알고리즘의 성능비교

  • Ren, Jin (Dept. of Electronics and Electrical Engineering, Dankook University) ;
  • Yoon, Seok-Hyun (Dept. of Electronics and Electrical Engineering, Dankook University)
  • 임진 (단국대학교 전자전기공학부) ;
  • 윤석현 (단국대학교 전자전기공학부)
  • Published : 2008.12.25
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Abstract

Signal detection is a key technique in wireless communication system. Recently, several detection algorithms have been developed for multiple-input multiple-output (MIMO) wireless communication systems. However, most research in this area had assumed a flat-fading channel environment and all these techniques are based on the assumption that the channel state information (CSI) at the receiver side is perfect. But in practical situation, the available CSI may be imperfect because of channel estimation errors and/or outdated training. In this paper, we will compare the performance of several detection algorithms in MIMO frequency selective fading channel environment with imperfect CSI.

신호의 검파는 무선통신시스템에서 매우 중요한 문제이며 최근에는 다중입력다중출력(MIMO) 통신을 위한 검파 알고리즘에 대한 연구가 많이 진행되었다. 그러나 이러한 연구의 많은 부분이 주파수 비선택적 채널을 가정하였거나 주파수 선택적 채널을 가정하더라도 수신단에서의 채널상태정보는 완전하다는 가정 하에 연구가 수행되었다. 따라서, 본 연구에서는 주파수 선택적 채널에서 불완전한 채널정보를 사용할 때 몇 가지 MIMO 검파 알고리즘에 대해 얻을 수 있는 오류율 성능을 비교해 보고자 한다.

Keywords

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