The Mitigation of the Effect of Impulsive Noise in OFDM-PLC Systems

Authors

  • Mohammad Reza Ahadiat Science and Research Branch, Islamic Azad University
  • Paeiz Azmi Tarbiat Modares University
  • Afrooz Haghbin Science and Research Branch, Islamic Azad University

DOI:

https://doi.org/10.24200/jrset.vol3iss01pp18-25

Abstract

This paper proposes an new iterative method to recover the signals corrupted by impulsive noise in MIMO-OFDM  systems over In-home PLC. In this iterative technique, preliminary decisions are made to get the impulsive noise detection algorithm for finding the locations and amplitudes of the impulses, and then signal estimation block for approximation the signals for two-branch 2*2 MIMO-OFDM at the receiver. In each iteration, this signals approximation are used  to improve the noise estimate. After impulsive noise detection, an comparison - decision algorithm is employed to compare two noises estimated, and algorithm. This method use  an adaptive  threshold and soft decision to estimating and canceling the impulsive noises. Then, by using ML detection, an approximation of signal is obtained. As this impulsive noise detection , comparison - decision and ML detection loop continues, we get better approximates of the signal. The algorithm is analyzed and verified by computer simulations. A comparison between the performance of the different systems is presented and discussed. The Simulation results confirm the robustness of performance of the proposed algorithm.

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Published

2019-09-13

Issue

Vol. 3 No. 01 (2015)

Section

Articles