Impulsive noise in UWB systems and its suppression
Mobile Networks and Applications
Reconstruction of the samples corrupted with impulse noise in multicarrier systems
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Estimation and compensation of clipping noise in OFDMA systems
IEEE Transactions on Wireless Communications
Time-domain equalizer for multicarrier systems in impulsive noise
International Journal of Communication Systems
Journal of Signal Processing Systems
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Orthogonal frequency division multiplexing (OFDM) is a technique used for terrestrial digital video broadcasting (DVB-T) and many other modern applications. The longer OFDM symbol duration provides an advantage in a presence of weak impulsive noise, because impulsive noise energy is spread among simultaneously transmitted OFDM sub-carriers. However, it has been recently recognized that this advantage turns into a disadvantage if the impulsive noise energy exceeds certain threshold. In this paper the algorithm for impulsive noise suppression in OFDM receivers is proposed and investigated. Whereas traditional methods for impulsive noise suppression are implemented in a time domain before OFDM demodulation, proposed algorithm compensates impulsive noise in a frequency domain after OFDM demodulation and channel equalization. The method is applied to DVB-T and its performance is studied by means of simulation.