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Mitigation of Signal Interference by Positioning FFT Window for OFDMA System

  • Salauddin Mohammad
  • Madan Gopal
  • Rajarao Manda
  • Khaleel Rehman
Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 624)

Abstract

In today’s generation, there is a need for achieving high-data rate to compete with the standard applications like OFDMA. The high speed depends on how efficiently the spectrum is being used to transmit the data from transmitter to the receiver. Due to the time-dispersive nature of the fast fading channels, the signal may get faded when reaching the receiver. The signal formed by group of symbols travels via multiple paths to reach the receiver. The fading caused by multipath propagation is called the multipath fading. To reduce the signal interference, many equalization technique algorithms have been proposed [1]. Apart from equalization algorithms, FFT operation window can be positioned at the downlink module of OFDMA system ensuring all the symbols have been received at the receiver to reduce the interference and increase the SNR. ModelSim 10.2 and MATLAB have been used to simulate and compare the results. The simulation results of the proposed method show 4.8% significant improvement of SNR.

Keywords

OFDMA FFT Equalization algorithms Signal interference 

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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • Salauddin Mohammad
    • 1
  • Madan Gopal
    • 2
  • Rajarao Manda
    • 1
  • Khaleel Rehman
    • 1
  1. 1.Department of Electronics and Communication EngineeringUniversity of Petroleum and Energy StudiesDehradunIndia
  2. 2.JNTUHyderabadIndia

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