In this letter, we propose a learning based channel estimation scheme for orthogonal frequency division multiplexing (OFDM) systems in the presence of phase noise doubly-selective fading channels. Two-dimensional (2D) convolutional neural networks (CNNs) are employed effective training and tracking variation both as well time domain. The proposed network learns estimates coefficients entire tim...

The membrane properties of isolated cultured microglia have been extensively studied but it is important to understand their properties in situ, where they protect the brain against infection, but also contribute to neurodegenerative diseases. Microglia and macrophages attack bacteria by generating reactive oxygen species, a process which involves NADPH oxidase pumping electrons out across the ...

this study addresses executive compensation from shareholders perspective by empirically examining the effects of chief executive officer (ceo) compensation on firm performance subsequent to the year of compensation. three factors of ceo compensation are examined, size, total annual compensation; form percentage of total compensation comprised of cash, cash bonuses and stock; and sensitivity. t...

In this paper, we evaluate the selective combination of algorithms for fiber nonlinearity compensation, transceiver impairments mitigation and variable-rate coding in unrepeatered optical transmission. A post-emphasis filter a two-stage 4×4 multiple-input multiple-output equalizer compensate impact bandwidth limitations in-phase quadrature skew. Nonlinear compensation is accomplished by fast-co...