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BER Performance of SFBC–OFDM Systems Working Over Fading Channels Under Impulsive Environment

  • Amit Kumar Kohli
  • Divneet Singh KapoorEmail author
Research Article - Electrical Engineering
  • 18 Downloads

Abstract

This correspondence presents the bit-error-rate (BER) performance analysis of the space-frequency-block-coded OFDM (SFBC–OFDM) communication systems, working over wireless fading channels under the impulsive environment. The effects of imperfect channel state information (CSI) on the BER performance are also investigated, while using the M-ary phase-shift keying and M-ary quadrature amplitude modulation for digital data transmission over the fading channels corrupted by the impulse noise and additive white Gaussian noise (AWGN). The imperfect CSI usually arises due to the noisy channel estimates at receiver. The major focus is on the description of closed-form expressions for the BER performance of underlying SFBC–OFDM systems impaired by impulse noise, in which the noise bucket concept helps in quantifying its performance under the Rayleigh fading scenario. Simulation results are presented to connote the deterioration of BER performance of SFBC–OFDM systems due to the presence of impulse noise, AWGN and noisy channel estimates at the receiver, under different channel fading conditions exhibiting Rayleigh and Nakagami-m probability distributions. For lower values of m in the range \(0.5 \le m < 1\), the adverse impact of impulse noise can be reduced by increasing the number of subcarriers in an OFDM symbol block period.

Keywords

SFBC STBC OFDM Rayleigh fading Nakagami-m fading Impulse noise 

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Copyright information

© King Fahd University of Petroleum & Minerals 2019

Authors and Affiliations

  1. 1.Department of Electronics and Communication EngineeringThapar Institute of Engineering and TechnologyPatialaIndia

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