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

The Institute of Electronics and Information Engineers (대한전자공학회)
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Performance Analysis of Precoded LTE-Advanced Uplink System

LTE-Advanced 시스템의 선부호화된 상향 링크 성능 분석

  • Kim, Sang-Gu (School of Information and Commun. Engineering, Chungbuk National University) ;
  • Li, Xun (School of Information and Commun. Engineering, Chungbuk National University) ;
  • Kim, Young-Ju (School of Information and Commun. Engineering, Chungbuk National University)
  • 김상구 (충북대학교 정보통신공학과) ;
  • 이신 (충북대학교 정보통신공학과) ;
  • 김영주 (충북대학교 정보통신공학과)
  • Received : 2011.02.01
  • Accepted : 2011.05.17
  • Published : 2011.05.25
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Abstract

LTE-Advanced aims at peak data rates of 1Gbits/s for the downlink and 500 Mbits/s for the uplink, which can be accomplished only by using wide spectrum allocation of 100MHz as well as advanced multiple input multiple output antenna techniques to the uplink. This paper analyzes the uplink precoding techniques which include LTE codebook of downlink, singular value decomposition codebook, and equal gain transmission codebook over LTE defined single carrier frequency division multiplexing systems. Finally considering nonlinear transmit power amplifier model, it is shown that link-level performance of EGT is superior to those of any other precoding schemes.

LTE-Advanced 시스템은 하향링크에서 1Gbps 상향링크에서 500Mbps 데이터 송신율을 목표로 한다. 이는 100MHz 이상의 스펙트럼 할당과 상향링크에서의 진보한 MIMO 안테나 기법에 의해 이루어진다. 본 논문은 LTE-A에서 정의하는 SC-FDMA 시스템 모델에서 LTE 하향링크의 코드북, SVD 코드북, EGT 코드북을 포함하는 상향링크 선부호화 기법을 분석한다. 마지막으로 SC-FDMA 기법에서도 발생하는 PAPR을 컴퓨터 시뮬레이션으로 분석하여, 비선형 전력 증폭기를 송신부에 고려한 채널 모델에서 동 이득 전송 기법이 다른 선 부호화 기법보다 우수함을 증명한다.

Keywords

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