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The Basics
Published in Douglas Self, Small Signal Audio Design, 2020
This form of noise is named after the sound of popcorn being cooked rather than eaten. It is also called burst noise or bistable noise and is a type of low frequency noise that is found primarily in integrated circuits, appearing as low-level step changes in the output voltage, occurring at random intervals. Viewed on an oscilloscope, this type of noise shows bursts of changes between two or more discrete levels. The amplitude stays level up to a corner frequency, at which point it falls at a rate of 1/f2. Different burst-noise mechanisms within the same device can exhibit different corner frequencies. The exact mechanism is poorly understood but is known to be related to the presence of heavy-metal ion contamination, such as gold. As for 1/f noise, the only measure that can be taken against it is to choose an appropriate device. Like 1/f noise, popcorn noise does not have a Gaussian amplitude distribution.
Cable Modems
Published in Keshab K. Parhi, Takao Nishitani, Digital Signal Processing for Multimedia Systems, 2018
Burst noise is, as would be expected from its name, a randomly occurring, finite duration burst of noise that tends to wipe out the signal for a short period of time. As the clipping noise is impulsive the burst noise is the only source of noise that requires an interleaver to correct (see Section 7.5). Its source is somewhat mysterious possibly being due to leakage from the upstream RF into the downstream RF in the user’s modem. Proof of its existence however is the presence of interleavers that have been added to systems after they were tested. AH of the proposed systems can correct bursts of up to 25μs. Therefore we can only assume that bursts of length up to about 25μs exist and longer bursts are possible. As far as channel modeling is concerned one possible test would be to randomly replace a section of demodulator input data by random noise for 25μs. This test determines if the adaptive systems within the demodulator function correctly after a burst of this length.
Basics
Published in Douglas Self, Small Signal Audio Design, 2014
This form of noise is named after the sound of popcorn being cooked, rather than eaten. It is also called burst noise or bistable noise, and is a type of low frequency noise that appears primarily in integrated circuits, appearing as low level step changes in the output voltage, occurring at random intervals. Viewed on an oscilloscope, this type of noise shows bursts of changes between two or more discrete levels. The amplitude stays level up to a corner frequency, at which point it falls at a rate of 1/f2. Different burst-noise mechanisms within the same device can exhibit different corner frequencies. The exact mechanism is poorly understood, but is known to be related to the presence of heavy-metal ion contamination, such as gold. As for 1/f noise, the only measure that can be taken against it is to choose an appropriate device. Like 1/f noise, popcorn noise does not have a Gaussian amplitude distribution.
A bulk-driven, buffer-biased, gain-boosted amplifier for biomedical signal enhancement
Published in Cogent Engineering, 2019
Sarin Vijay Mythry, D. Jackuline Moni
The dominant sources of CMOS device noise are to be superintended to design front end amplifiers for bio-medical applications. The dominant noise sources are categorized as (i) Flicker Noise, (ii) Shot Noise, (iii) Thermal Noise, (iv) Bulk-driven Noise, (v) Avalanche Noise, and (vi) Burst Noise. The spectral density, that is noise voltage (or) noise current per root hertz , specifies the noise parameter in MOSFETs.