한국전자파학회논문지 (The Journal of Korean Institute of Electromagnetic Engineering and Science)

  • 제29권1호
  • /
  • Pages.32-35
  • /
  • 2018
  • /
  • 1226-3133(pISSN)
  • /
  • 2288-226X(eISSN)
한국전자파학회 (The Korean Institute of Electromagnetic Engineering and Science)
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UCA MIMO 전송 시 준직교적 빔 쌍을 활용한 합 전송률 향상 방안

Sum-Rate Improvement Method Using Quasi-Orthogonal Beam Pairs for UCA MIMO Transmission

  • Yang, Jiyeong (Department of Electronic Engineering, Sogang University) ;
  • Kim, Huiwon (Department of Electronic Engineering, Sogang University) ;
  • Sung, Wonjin (Department of Electronic Engineering, Sogang University)
  • 투고 : 2017.12.04
  • 심사 : 2018.01.08
  • 발행 : 2018.01.31
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초록

5G 이동통신시스템에서 요구되는 높은 주파수 효율을 달성하기 위해서는 대규모 다중 입출력 송수신(Massive Multiple-Input Multiple-Output: Massive MIMO) 기술의 활용이 필수적이며, 원소 수의 증가에 따라 다양한 형태의 어레이 형상이 사용될 수 있다. 본 논문에서는 균일 원형 어레이(Uniform Circular Array: UCA)를 사용하는 다중 사용자 MIMO 전송 시 활용 가능한 빔 형성 알고리듬을 제시하며, 빔 간 상관도를 활용하여 준 직교적인 빔 인덱스 쌍을 바탕으로 사용자간 간섭을 최소화하여 얻어지는 성능 이득을 평가한다.

Massive multiple-input multiple-output (MIMO) transmission is an essential technique for achieving the high bandwidth efficiency required in 5G mobile communication systems. Various forms of arrays can be used as the number of antenna elements increases for massive MIMO transmission. In this letter, we propose a beamforming algorithm applicable to multiuser MIMO transmission using uniform circular arrays. By employing quasi-orthogonal beam pairs obtained from the inter-beam correlation information, we minimize inter-user interference and evaluate the resulting performance gain.

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참고문헌

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