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Unformatted text preview: NEAR DISTORTION: nonlinearity creates new difference frequencies, causing energy from one signal in a band to spill over to another (intermodulation distortion). NOISE: Random disturbances, usually additive Thermal noise Burst-type noises THERMAL NOISE Proportional to absolute temperature and proportional to bandwidth SPECTRAL DENSITY CONCEPT: S(f) measures how power of a random noise or signal is distributed in frequency. Thermal noise has a constant spectral density, N0/2. Maximum data rate of a channel - Shannon formula - assume thermal noise. The nois...
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This note was uploaded on 01/26/2014 for the course EE 362 taught by Professor Laporta during the Fall '08 term at Pennsylvania State University, University Park.

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