Global position systems (GPS) receiver based on least mean square (LMS) could resist the interference by null jamming direction. Considering that existing band-limited Gaussian noise signals were easily suppressed LMS-based GPS receivers, a time domain random flicker algorithm was proposed to improve its performance. By disturbing convergence of LMS, it achieve purpose suppressing GPS. Simulati...

We propose a nonlinear concealing–restoring system (CRS) set on the data link layer of open-systems-interconnection (OSI) reference model to secure physical layer. CRS conceals those by disturbing them with some random noises, and restores from concealed ones original noise elimination based proper stochastic filtering theory.

The review article by Xie and colleagues examines the impact of noise and noise reduction strategies on sleep quality for critically ill patients. Evaluating the impact of noise on sleep quality is challenging, as it must be measured relative to other factors that may be more or less disruptive to patients' sleep. Such factors may be difficult for patients, observers, and polysomnogram interpre...

Noise is the most disturbing factor of indoor environment in open offices (Haapakangas et al. 2008a). Several independent laboratory experiments have shown that noise, especially speech, reduces task performance of cognitively demanding tasks. According to the model of Hongisto et al. (2008), task performance reduces with increasing speech intelligibility. The room acoustic design of open offic...

Power transformers can be sources of disturbing and annoying acoustic noise. This paper is a first phase report of a wider framework of study that investigates the noise radiation characteristics of air-cooled power transformers. The dynamics of the transformer core structure plays a significant role in the noise generation process. The reported work focuses on the influence of lamination of th...

The paper describes methodology of experimental diagnostics examining the influence of small home appliances in operation resulting in the injection of impulse noise into local communication lines. The most important result of practical experiments is a data bank of disturbing impulses that will serve for defining of impulse noise model. Keywords–impulse noise; communication lines; local loop; ...

A technique that enables the variation of bias currents in a filter without causing disturbances at the output is presented. Thus, the bias current can be kept at the minimum value necessary for the total input signal being processed, reducing the noise and power consumption. To demonstrate this approach, a dynamically biased log-domain filter has been designed in a 0.25m BiCMOS technology. The...