Recently we have proposed a generalized Hammerstein equalization technique (GHE) to mitigate the intersymbol interference (ISI) effects in linear frequency selective channels. This technique is a nonlinear generalization of a linear equalizer, in which the higher orders of the signal at each tap is used for equalization. In the present work, we employ GHE technique for frequency selective fading channels with different fading models. Moreover, we investigate the effects of different power delay profiles on the performance of GHE. The advantages of our proposed technique over a linear equalizer are discussed in detail using the simulation results. Keywords-nonlinear equalization; power delay profile; frequency selective fading channel; Hammerstein filter I.6
A B S T R A C TWith respect to the dramatic increasing use of electronically communicators and wireless modems, concerns have been raised about the possible effects of emitted electromagnetic radiation on human brain. In this paper, the effects of high-frequency wireless modem waves on the brain signal are investigated. To this end, the Electroencephalograph (EEG) recording of 15 volunteers is examined in four different bands. The experiments are designed to cover in four steps. Average power statistical analysis in different frequency bands and magnitude-squared coherence function shows significant changes in some bands.
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