Impulse noise

About: Impulse noise is a research topic. Over the lifetime, 4816 publications have been published within this topic receiving 63970 citations.

Error Rates for Fading NCFSK Signals in an Additive Mixture of Impulsive and Gaussian Noise

Abstract: The effects of slow and nonselective signal fading on the performance of multilevel noucoherent FSK (NCFSK) systems in an additive mixture of Gaussian and highly impulsive noise are analyzed. For binary systems the bit error rate is derived; for M -ary NCFSK systems upper and lower bounds of the character error probability are obtained. The analysis is performed considering the maximum likelihood receiver for additive white Gaussian noise.

Biomedical image compression using fuzzy transform and deterministic binary compressive sensing matrix

Abstract: Bio medical images are very important in analysing the internal structure of the body in a non-invasive method, to diagnose for any abnormalities and provide proper treatment to the patients. Medical images include X-rays, CT scan and MRI scan etc. It is necessary to compress these images, so that they can be easily stored and communicated from one place to another. The result of compression should be in such a way that, quality of the compressed image should be good and the compression ratio should be high. The biomedical images are mainly prone to impulse noise which may lead to degradation of image quality. So it is important to filter the impulse noise from the biomedical images without affecting the details of the image. In this paper the filtering of impulse noise from the biomedical images is done using fuzzy transform, followed by compressive sensing to compress the bio medical images without losing information content. Compressive sensing uses a sensing matrix to measure random samples from the image signal. This paper proposes the compression of biomedical images using a deterministic binary compressive sensing matrix and for the recovery of the biomedical image, Orthogonal Matching Pursuit (OMP) is used.

System for monitoring exposure to impulse noise

Abstract: In one embodiment, a system for monitoring exposure to impulse noise includes a sound-sensing device, such as a microphone or other type of pressure transducer, operable to sense impulse noise, and a storage module operable to store the waveform of the impulse noise sensed by the sound-sensing device. The sound-sensing device desirably is operable to sense impulses that are greater than 146 dB, such as impulses created by construction machinery and firearms. The system also can include a processor operable to calculate one or more noise parameters of the impulse noise from the waveform, and a user interface program operable to display said one or more noise parameters selected by a user.

Phase resolving partial discharge pattern acquisition and frequency spectrum analysis

Abstract: The 'partial discharge pattern recording technique' is applicable to electrical insulation field measurements, particularly if combined with disturbance rejection and nonconventional pick-ups. Electromagnetic disturbances are eliminated by filtering in the time domain (impulse noise gating) and/or in the frequency domain (down-mixing). PD patterns not only help to identify the defect type but also serve to evaluate the efficiency of a disturbance rejection procedure. >