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词汇 Gaussian channel
分类 英语词汇 英语翻译词典
释义

Gaussian channel

英语百科

Additive white Gaussian noise

Zero-Crossings of a Noisy Cosine
AWGN Contributions in the Phasor Domain

Additive white Gaussian noise (AWGN) is a basic noise model used in Information theory to mimic the effect of many random processes that occur in nature. The modifiers denote specific characteristics:

Wideband noise comes from many natural sources, such as the thermal vibrations of atoms in conductors (referred to as thermal noise or Johnson-Nyquist noise), shot noise, black body radiation from the earth and other warm objects, and from celestial sources such as the Sun. The central limit theorem of probability theory indicates that the summation of many random processes will tend to have distribution called Gaussian or Normal.

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