Research of OFDM Systems Channel Estimation Based on DFT Improved Algorithm

被引:2
|
作者
Yan, Xu [1 ]
Ying, Lin [1 ]
机构
[1] Lanzhou Jiaotong Univ, Sch Elect & Informat Engn, Lanzhou 730070, Peoples R China
关键词
OFDM system; channel estimation; LS & MMSE algorithm;
D O I
10.1109/ICCSE.2009.5228449
中图分类号
TP301 [理论、方法];
学科分类号
081202 ;
摘要
Based on the training sequence in the DFT channel estimation method, the further research on the LS and MMSE channel estimation algorithm of OFDM systems is proceeding. To use of the characteristics that signal energy concentrated on time domain improves channel estimation algorithm. Only in the time the trails energy concentrated, the lower energy trail is approximate to zero, so algorithm complexity can be greatly reduced. Simulation result shows that the improved algorithm can not only effectively reduce the calculation amount of channel estimation algorithm, but also calculation accuracy of low SNR is better than original estimates.
引用
收藏
页码:250 / 253
页数:4
相关论文
共 50 条
  • [1] Research on channel estimation based on DFT algorithm in CO-OFDM system
    Zhang, Junling
    PROCEEDINGS OF 2020 IEEE 5TH INFORMATION TECHNOLOGY AND MECHATRONICS ENGINEERING CONFERENCE (ITOEC 2020), 2020, : 187 - 190
  • [2] Improved DFT-Based Channel Estimation for OFDM Systems with Null Subcarriers
    Zhang, Liang
    Hong, Zhihong
    Thibault, Louis
    2009 IEEE 70TH VEHICULAR TECHNOLOGY CONFERENCE FALL, VOLS 1-4, 2009, : 597 - 601
  • [3] Improved DFT-based Channel Estimation in OFDM Systems Based on Phase Compensation
    Jin, Maozhu
    Lei, Xia
    Lin, Shiqing
    APPLIED MATHEMATICS & INFORMATION SCIENCES, 2012, 6 (03): : 629 - 638
  • [4] An Improved Channel Estimation Based on Generalized DFT for OFDM System
    Li, Guihong
    Jing, Xiaojun
    Sun, Songlin
    Huang, Hai
    2014 14TH INTERNATIONAL SYMPOSIUM ON COMMUNICATIONS AND INFORMATION TECHNOLOGIES (ISCIT), 2014, : 341 - 345
  • [5] DFT channel estimation based on improved threshold in OFDM system
    Tian, Chun-Tang, 1600, Northeast University (35):
  • [6] A DFT-Based Channel Estimation Algorithm with Noise Elimination for Burst OFDM Systems
    Zhang, Yupeng
    Liu, Kai
    2019 6TH INTERNATIONAL CONFERENCE ON INFORMATION SCIENCE AND CONTROL ENGINEERING (ICISCE 2019), 2019, : 28 - 31
  • [7] AN ITERATIVE DFT-BASED CHANNEL ESTIMATION ALGORITHM FOR OFDM SYSTEMS WITH VIRTUAL CARRIERS
    Ali, Hassan
    Leyman, A. Rahim
    2013 26TH ANNUAL IEEE CANADIAN CONFERENCE ON ELECTRICAL AND COMPUTER ENGINEERING (CCECE), 2013, : 367 - 371
  • [8] An Improved Channel Estimation Algorithm for OFDM Systems with Virtual Carriers
    Li, Jiandong
    Zhang, Yang
    Pang, Lihua
    Li, Chuan
    2009 5TH INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS, NETWORKING AND MOBILE COMPUTING, VOLS 1-8, 2009, : 1262 - 1266
  • [9] An Improved Channel Estimation Algorithm for MIMO-OFDM Systems
    Li, Yun
    Yi, Zhiqiang
    2010 6TH INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS NETWORKING AND MOBILE COMPUTING (WICOM), 2010,
  • [10] An improved channel estimation algorithm for MIMO-OFDM systems
    Mung'au, Franklin
    Wong, Kai-Kit
    2006 IEEE INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS, NETWORKING AND MOBILE COMPUTING, VOLS 1-4, 2006, : 118 - +