A Novel ICI-SC Scheme in MIMO-OFDM System

  • Zhenchao Wang
  • Jianping Zhang
  • Yanqin Wang
  • Zhenpeng Liu
  • Zhenyang Guan
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 246)

Abstract

MIMO-OFDM system suffers from ICI caused by frequency offset, and the ICI-SC method is a very simple way of suppressing ICI, but the existing ICI-SC method may reduce the anti-noise performance when we improve the CIR performance. This paper proposes a novel ICI-SC scheme that subcarrier signals are remapped in complex weighted data-conjugate method to solve the problem. The proposed method with the minimum phase rotation can effectively reduce the phase error caused by phase rotation of received signal; thereby it improves the system anti-noise performance. According to the simulation, the proposed method has not only a similar CIR performance with the existing method, but also a significantly better BER performance. Another problem is the bandwidth efficiency of ICI self-cancellation method is 1/2, so this paper proposes a novel remapped method of 2/3 rate data to improve the bandwidth efficiency of MIMO-OFDM system.

Keywords

MIMO-OFDM Carrier frequency offset ICI-SC Bandwidth efficiency 

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Zhenchao Wang
    • 1
  • Jianping Zhang
    • 1
  • Yanqin Wang
    • 2
  • Zhenpeng Liu
    • 1
    • 3
  • Zhenyang Guan
    • 1
  1. 1.College of Electronic and Information EngineeringHebei UniversityBaoDingChina
  2. 2.Hebei UniversityBaoDingChina
  3. 3.Network CentreHeBei UniversityBaoDingChina

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