A Robust Algorithm for Impulsive Noise Mitigation in OFDM Systems

Orthogonal frequency division multiplexing (OFDM) systems are susceptible to impulsive noise; in essence, if the impulsive noise is not addressed adequately, system performance loss intensifies by the indelible impairment across OFDM signal bandwidth–thanks to the Fast Fourier Transform operation. This paper capitalizes on the majorization-minimization algorithm in tandem with semidefinite relaxation to avert an overwhelming task engaged in solving a non-convex optimization problem–engendered by the rule that data borne on sub-carriers is subject to a digital modulation format. Simulation results attest the robustness of our proposed receiver: the bit error rate performance level is promisingly close to that of the benchmark receiver–which however uses impulse statistics–in fairly hostile environments.