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

  • 제40권8호
  • /
  • Pages.1485-1491
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  • 2015
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  • 1226-4717(pISSN)
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  • 2287-3880(eISSN)
한국통신학회 (The Korean Institute of Commucations and Information Sciences)
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상향링크 Massive MIMO 시스템에서 파일럿 할당 알고리즘

Pilot Assignment Algorithm for Uplink Massive MIMO Systems

  • 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)
  • 투고 : 2015.05.13
  • 심사 : 2015.07.23
  • 발행 : 2015.08.31
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초록

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.

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.

키워드

참고문헌

  1. H. Lee, B. Lee, and I. Lee, "Iterative detection and decoding with an improved V-BLAST for MIMO-OFDM systems," IEEE J. Sel. Areas Commun., vol. 24, no. 3, pp. 504-513, Mar. 2006. https://doi.org/10.1109/JSAC.2005.862400
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  6. F. Rusek, D. Persson, B. K. Lau, E. G. Larsson, T. L. Marzetta, O. Edfors, and F. Tufvesson, "Scaling up MIMO: Opportunities and challenges with very large arrays," IEEE Signal Process. Soc., vol. 30, no. 1, pp. 40-60, Jan. 2013.
  7. H. Yin, D. Gesbert, M. Filippou, and Y. Liu, "A coordinated approach to channel estimation in large-scale multiple-antenna systems," IEEE J. Sel. Areas Commun., vol. 31, no. 2, pp. 264-273, Feb. 2013. https://doi.org/10.1109/JSAC.2013.130214
  8. A. Ashikhmin and T. Marzetta, "Pilot contamination precoding in multi-cell large scale antenna systems," in Proc. Int. Symp. Inf. Theory Proceedings, pp. 2157-8095, Cambridge, MA, USA, Jul. 2012.

피인용 문헌

  1. MMSE Based Nonlinear Precoding for Multiuser MIMO Broadcast Channels with Inter-Cell Interference vol.41, pp.8, 2015, https://doi.org/10.7840/kics.2016.41.8.896