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

The Korean Institute of Commucations and Information Sciences (한국통신학회)
권호 표지
DOI QR코드

DOI QR Code

DFT-Based Channel Estimation Scheme for the Uplink of LTE-A Systems

LTE-A 시스템 상향링크를 위한 DFT 기반 채널추정 기법

  • Kim, Kyung Jun (School of Electrical and Electronic Engineering, Yonsei University) ;
  • Choi, Kyung Jun (School of Electrical and Electronic Engineering, Yonsei University) ;
  • Kim, Kwang Soon (School of Electrical and Electronic Engineering, Yonsei University)
  • Received : 2015.01.05
  • Accepted : 2015.01.27
  • Published : 2015.02.28
Download PDF
⟨ Previous Next ⟩

Abstract

In this letter, a DFT-based channel estimator is proposed for the uplink of LTE-A systems to solve the leakage and enhance the spectral efficiency. It is confirmed that the proposed estimator can significantly improve user and cell spectral efficiencies compared to conventional estimators.

본 논문은 LTE-A 시스템 상향링크에서 채널누수 문제를 해결하고 스펙트럼 효율을 개선하기 위한 DFT 기반 채널추정 기법을 제안하였다. 제안하는 추정기는 기존 추정기들과 비교하여 사용자 및 셀 스펙트럼 효율을 뛰어나게 개선할 수 있음을 확인하였다.

Keywords

References

  1. 3GPP, Evolved Universal Terrestrial Radio Access, Physical channels and modulation, 3GPP TS 36.211 v11.0.0, Oct. 2012.
  2. B. Shim and B. Lee, "Evolution of MIMO technology," J. KICS, vol. 38, no. 8, pp. 712-723, Aug. 2013.
  3. M. Zhou, B. Jiang, T. Li, W. Zhong, and X. Gao, "DCT-based channel estimation techniques for LTE uplink," in Proc. IEEE PIMRC, pp. 1034-1038, Tokyo, Japan, Sept. 2009.
  4. K. J. Kim, H. G. Hwang, K. J. Choi, and K. S. Kim, "Low-complexity DFT-based channel estimator with leakage nulling for OFDM systems," IEEE Commun. Lett., vol. 18. no. 3, pp. 415-418, Mar. 2014. https://doi.org/10.1109/LCOMM.2013.123113.132361

Cited by

  1. 다중사용자 상향링크 환경을 위한 적응형 다중안테나 채널추정 기법 vol.40, pp.7, 2015, https://doi.org/10.7840/kics.2015.40.7.1293
  2. 신뢰도를 모르는 불완전한 채널 정보에 기초한 선형 프리코딩 vol.40, pp.9, 2015, https://doi.org/10.7840/kics.2015.40.9.1678
  3. 고속 이동체를 위한 상향링크 주파수 옵셋 보상 방법 vol.40, pp.9, 2015, https://doi.org/10.7840/kics.2015.40.9.1699
  4. ZCZ 부호와 블록 확산을 이용한 사용자 동기화 경감 OFDM-CDMA vol.41, pp.1, 2016, https://doi.org/10.7840/kics.2015.41.1.23