نتایج جستجو برای: transmission losses
تعداد نتایج: 306105 فیلتر نتایج به سال:
In this paper, we are trying to recover coefficients lost during the transmission of subband-encoded images. Unlike many authors in the field of image reconstruction, we are dealing with coefficient losses (represented by a given loss probability) and not with additive noise or propagation effects modeled by a particular transmission function. Our channel can be considered as a digital packettr...
In this paper we address the issue of efficient multimedia communication by integrating an intelligent buffer management with the congestion control scheme at the source. The scheme rewards multiple priority levels in encoded video and fact that most of the transmission losses actually occur at the source control. The integrated system uses priority information from the encoder and network info...
One of the main objectives of the smart grid initiative is to enable bulk power transmission over long distance, with reduced transmission losses. Besides the traditional high-voltage alternating current (HVAC) transmission, with the advancement in power electronics, high-voltage direct current (HVDC) transmission is increasingly becoming important. One of the main factors impacting the transmi...
A promising solution in the transmission of video streams via communication networks is to use forward error control in order to mask some of the transmission errors and data losses at the receiving side. The redundancy required, however, to achieve error correction without retransmissions will consume some transmission capacity of a network, therefore possibly enforcing stronger compression of...
For modeling, the concept of the system and the system boundary is necessary. The system is defined as a group of objects that in order to fulfill a specific purpose in the framework relationship or interdependence of regularly are interconnected. Systems rainfall - runoff from rainfall in the basin is started and after applying the types of losses (evaporation, infiltration, etc) it will beco...
One of the major problems in liberalized power markets is loss allocation. In this paper, a different method for allocating transmission losses to pool market participants is proposed. The proposed method is fundamentally based on decomposition of loss function and current projection concept. The method has been implemented and tested on several networks and one sample summarized in the paper. ...
The optical properties of periodic arrays of subwavelength apertures in metal films on GaAs substrates are studied. Specifically, geometric and material losses for these plasmonic structures are characterized using angular dependent transmission, normal incidence reflection, and angular dependent diffraction experiments, in addition to a crossed-polarizer transmission experiment. The optical pr...
The tremendous growth of wireless networks demands the need to meet different congestion control algorithms for wireless network. Usual transmission control protocol reduces its performance by misinterpreting mobility losses due to node motion as congestion losses in wireless mobility network. So the congestion control algorithms are important role in the
Innovations in optical fiber technology are revolutionizing world communications. The focus of this paper is the development of optical fibers that within 20 years displaced copper wire as the transmission medium of choice for most commercial applications in telecommunications systems and computer networks worldwide. High speed and ultra-high capacity of optical communications have emerged as t...
We report on single mode optical transmission of hollow core glass waveguides (HWG) coupled with an external cavity mid-IR quantum cascade lasers (QCLs). The QCL mode results perfectly matched to the hybrid HE(11) waveguide mode and the higher losses TE-like modes have efficiently suppressed by the deposited inner dielectric coating. Optical losses down to 0.44 dB/m and output beam divergence o...
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