Optimized mitigation of impulsive noise in OFDM system using CSI

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• 作者：Shivani Sehrawat ^{shivanisehrawat1992@gmail.com" class="auth_mail" title="E-mail the corresponding author}Author Vitae ; Amit Kumar Kohli ; ^{drkohli_iitr@yahoo.co.in" class="auth_mail" title="E-mail the corresponding author} ; ^{akkohli@thapar.edu" class="auth_mail" title="E-mail the corresponding author}Author Vitae
• 关键词：OFDM ; Impulse noise ; Channel estimation ; Channel state information ; DFT ; IDFT
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：127
• 期：20
• 页码：9627-9634
• 全文大小：1763 K

文摘

This paper presents comparison between different impulsive noise mitigation techniques in orthogonal-frequency-division-multiplexing (OFDM) systems, which affect the performance of underlying communication system in terms of the bit-error-rate (BER). The main focus is on Zhidkov’s (ZKV) method and Jia’s method for impulsive noise mitigation using imperfect channel-state-information (CSI). Though former scheme appears to be a promising peak detection method based on the variance of estimated impulsive noise, but latter composite-comparison-value (CCV) method is found to be outperforming in alleviating the adverse effects of impulsive noise in frequency-domain, at the receiving end. In ZKV and CCV methods, different parametric values are optimized to suppress the impulsive noise under fading conditions in the presence of perfect CSI. Simulation results are presented for performance evaluation of these impulsive noise suppression schemes using imperfect CSI for the different modulation schemes, which illustrate the efficacy of CCV method in the field of communication engineering.