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Low complexity frequency domain iterative equalization based on minimum mean square error for single carrier systems

  • Qi Feng Zou
  • , Xue Zhi Tan*
  • , Mei Liu
  • , Lin Ma
  • *Corresponding author for this work
  • School of Electronics and Information Engineering, Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

In Single Carrier Frequency Domain Equalization (SC-FDE) system, a novel equalization algorithm based on Mean Square Error (MSE) criterion was proposed in order to predigest the complexity of Iterative Block Decision Feedback Equalization (IBDFE). The coefficients of the filter can be kept unchanged in each iteration based on the given channel frequency response. The Unique Word (UW) sequence, which was inserted into frame structure and the cyclic prefix, could reduce the overhead of the system. The simulation results show that the performance of the proposed algorithm is better than the conventional linear equalization algorithm in high Signal to Noise Ratio (SNR) and close to the IBDFE algorithm in the same iteration times. However, the complexity of the proposed algorithm is lower than that of the conventional IBDFE algorithm.

Original languageEnglish
Pages (from-to)2062-2068
Number of pages7
JournalJilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition)
Volume45
Issue number6
DOIs
StatePublished - 1 Nov 2015
Externally publishedYes

Keywords

  • Communication
  • Decision feedback equalization
  • Mean square error
  • Single carrier frequency domain equalization (SC-FDE)
  • Unique word sequence

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