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Design and Performance Analysis of FSC Receiver for Improvement of D2D Communication in Cellular Network

셀룰러 네트워크에서 D2D 통신 향상을 위한 FSC 수신기 설계 및 성능 분석

  • Moon, Sangmi (School of Electronics & Computer Engineering Chonnam National University) ;
  • Choe, Hun (School of Electronics & Computer Engineering Chonnam National University) ;
  • Chu, Myeonghun (School of Electronics & Computer Engineering Chonnam National University) ;
  • Kim, Hanjong (School of Electrical, Electronics & Communication Engineering, Korea University of Technology and Education) ;
  • Hwang, Intae (School of Electronics & Computer Engineering Chonnam National University)
  • 문상미 (전남대학교 전자컴퓨터공학과) ;
  • 최훈 (전남대학교 전자컴퓨터공학과) ;
  • 추명훈 (전남대학교 전자컴퓨터공학과) ;
  • 김한종 (한국기술교육대학 정보기술공학부) ;
  • 황인태 (전남대학교 전자컴퓨터공학과)
  • Received : 2015.02.27
  • Accepted : 2015.04.27
  • Published : 2015.05.25

Abstract

Cellular Network assisted device-to-device (D2D) communication has been growing to reduce the overload of eNodeB and mitigate the frequency shortage. However, by sharing the uplink frequency resource with the cellular network, the interference between cellular and D2D is increased. In this paper, we propose an advanced receiver for full suppression cancellation (FSC) to reduce the interference between cellular and D2D. The proposed receiver can suppress and cancel the interference by integrating the interference rejection combining (IRC) technique with successive interference cancellation (SIC). We perform a system level simulation based on the 20-MHz bandwidth of the 3GPP LTE-A system. Simulation results show that the proposed receiver can improve SINR, throughput and spectral efficiency compared to conventional receivers.

셀룰러 네트워크에서 기지국의 과부하를 줄이고 주파수 부족 현상을 완화시킬 수 있는 D2D(Device-to-Device) 통신에 대한 연구가 활발히 진행되고 있다. 하지만 셀룰러 네트워크의 상향링크 주파수 자원을 공유함으로써 상호간의 간섭은 증가하게 된다. 본 논문에서는 셀룰러와 D2D 사이의 간섭을 줄이기 위하여 새로운 하이브리드 수신기 FSC(Full Suppression Cancellation)를 제안한다. 제안한 수신기는 IRC(Interference Rejection Combining)와 SIC(Successive Interference Cancellation)를 결합하여 간섭을 억제 및 제거 할 수 있다. 시스템 레벨 시뮬레이션은 3GPP LTE-A 시스템의 20MHz 대역을 기반으로 이루어 졌으며, 시뮬레이션 결과 제안한 수신기를 통해 기존 수신기보다 SINR, 전송률 및 스펙트럼 효율 측면에서 성능 향상을 가져다주는 것을 확인하였다.

Keywords

References

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