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

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Pilot Assignment Algorithm for Uplink Massive MIMO Systems

상향링크 Massive MIMO 시스템에서 파일럿 할당 알고리즘

  • Jang, Seokju (School of Electrical Engineering, Korea University) ;
  • Kong, Han-Bae (School of Electrical Engineering, Korea University) ;
  • Lee, Inkyu (School of Electrical Engineering, Korea University)
  • Received : 2015.05.13
  • Accepted : 2015.07.23
  • Published : 2015.08.31
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Abstract

This paper introduces a new pilot assignment algorithm for uplink Massive multiple-input multiple-output (MIMO) systems. Since the conventional pilot assignment algorithm has the performance degradation compared to the optimal algorithm which performs the exhaustive search, we propose a new pilot assignment algorithm using Pre-determined Interference and Pre-determined Desired-term techniques. The proposed algorithm has the low complexity and guarantees negligible performance loss compared to the optimal algorithm. Simulation result verifies that the proposed algorithm achieves a large performance gain over the conventional algorithm.

본 논문에서는 상향링크 Massive multiple-input multiple-output 시스템 상황에서의 파일럿 할당 알고리즘을 소개한다. 기존에 제안된 파일럿 할당 알고리즘은 최적 알고리즘에 비해 성능 열화가 크기 때문에, 본 논문에서는 Pre-determined Interference 기법과 Pre-determined Desired-term 기법을 이용한 알고리즘을 제안한다. 제안하는 기법은 최적 알고리즘에 비해 복잡도가 낮음과 동시에 성능 열화가 작다. 실험 결과를 통해 제안하는 기법의 성능을 확인한다.

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References

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