Wireless Personal Communications

, Volume 83, Issue 1, pp 427–440 | Cite as

Coordinative Stochastic Resonance Filtering Based Inter-cell Interference Suppression in FrFT-OFDMA Cellular Systems

Article
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Abstract

In fractional Fourier transform (FrFT) based orthogonal frequency division multiple access cellular systems, the inter-cell inference combined with multiple linear frequency modulated (LFM) signals degrades the system performance at the receiver. A novel coordinative stochastic resonance (CSR) filtering method, which is described by an overdamped bistable dynamical system, is proposed to improve the signal-to-interference-plus-noise ratio (SINR), which is defined to characterize CSR in optimal FrFT domain. Simulation results show that the output SINR is effectively improved by the use of CSR filter, which is based on the underlying mechanism that interfering LFM signals cooperate with noise in part to promote particles motion periodically with larger amplitude in a symmetric double well.

Keywords

Fractional Fourier transform Orthogonal frequency division multiple access Stochastic resonance Inter-cell interference suppression 
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Notes

Acknowledgments

This project is supported by the National Natural Science Foundation of China under Grant No. 11301360, the Specialized Research Fund for the Doctoral Program of Higher Education under Grant No. 20120181120089 and the Sichuan Province Office of Education under Grant No. 15ZA0030.

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Huiqi Wang
    • 1
  • Wangyong Lv
    • 2
  • Hao Peng
    • 3
  • Guichuan Zhou
    • 4
  1. 1.College of Mathematics and StatisticsChongqing UniversityChongqingChina
  2. 2.College of Mathematics and Software ScienceSichuan Normal UniversityChengduChina
  3. 3.College of MathematicsSouthwest Jiaotong UniversityChengduChina
  4. 4.Business School of Sichuan UniversityChengduChina

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