J4 ›› 2013, Vol. 40 ›› Issue (2): 25-30.doi: 10.3969/j.issn.1001-2400.2013.02.005

• 研究论文 • 上一篇    下一篇



  1. (1. 北京邮电大学 信息与通信工程学院,北京  100876;
    2. 长安大学 电子与控制工程学院,陕西 西安  710064;
    3. 北京邮电大学 电子工程学院,北京  100876)
  • 收稿日期:2012-09-13 出版日期:2013-04-20 发布日期:2013-05-22
  • 通讯作者: 王秋才
  • 作者简介:王秋才(1973-),男,副教授,北京邮电大学博士研究生,E-mail: qcwang@chd.edu.cn.
  • 基金资助:


Frequency domain iterative block DFE for SC-FDMA uplink system

WANG Qiucai1,2;YUAN Chaowei1;ZHANG Jinbo1;LI Yingxue3   

  1. (1. School of Information and Communication Engineering, Beijing Univ. of Posts and Telecommunications, Beijing  100876,China;
    2. School of Electronic and Control Engineering, Chang'an Univ.,Xi'an  710064,China;
    3. School of Electronic Engineering, Beijing Univ. of Posts and Telecommunications, Beijing  100876,China)
  • Received:2012-09-13 Online:2013-04-20 Published:2013-05-22
  • Contact: WANG Qiucai



关键词: 单载波频分多址, 符号间干扰, 频域, 判决反馈均衡


Focusing on intersymbol interference(ISI) and multiuser interference(MUI) existing in single-carrier frequency-division multiple access(SC-FDMA) in multipath fading channels, a new multiuser receiver based on diversity combining is designed, and a novel frequency domain iterative block decision feedback equalization(DFE) approach for multiuser SC-FDMA is proposed. By exploiting the input-decision correlation, it optimizes the tap coefficients of the feedforward and feedback filters, in such a way that the maximized signal-to-interference-plus-noise ratio(SINR) is achieved for each iterative process, thus removing residual interference, and gradually improving the reliability of the detected data. Simulation results show that the proposed approach effectively reduces the bit error rate(BER) and provides significant robustness against multipath fading.

Key words: single-carrier frequency-division multiple access(SC-FDMA), intersymbol interference(ISI), frequency domain(FD), decision feedback equalization(DFE)