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A Modified Doppler Diversity Receiver for OFDM

  • Yufeng Ma
  • Xueyan Chen
  • Hongyuan Wang
  • Baixin Mu
  • Yao Fu
Conference paper
Part of the Advances in Intelligent and Soft Computing book series (AINSC, volume 146)

Abstract

A Doppler diversity receiver for OFDM is proposed by Kim B C [4]. The received signal is first frequency shifted to generate various signal branches. After FFT transformation in each branch, branches output of the same subcarrier are weighted and added together to get the signal which is used to make demodulating decisions. In the conventional Doppler diversity receiver, only the correlations of interferences of two branches less correlated are taken into account when choosing the frequency shift ,so choose the branches with f x  = 0.75/T. Different from it, we find that when f x  = 0.8/T, the correlations of interferences of three branches are less correlated to each other. Experiment results show that the modified receiver can achieve better BER performance than the conventional Doppler diversity receiver.

Keywords

Doppler diversity receiver OFDM BER performance 

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References

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Copyright information

© Springer-Verlag GmbH Berlin Heidelberg 2012

Authors and Affiliations

  • Yufeng Ma
    • 1
    • 2
  • Xueyan Chen
    • 1
  • Hongyuan Wang
    • 1
  • Baixin Mu
    • 1
  • Yao Fu
    • 1
  1. 1.Shenyang Ligong UniveristyShenyangChina
  2. 2.State Key Laboratory of Rail Traffic Control and SafetyBeijing Jiaotong UniversityBeijingChina

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