نتایج جستجو برای: single frequency network

تعداد نتایج: 1889398  

Journal: :EURASIP Journal on Wireless Communications and Networking 2010

Journal: :CoRR 2008
George S. Eskander Amir F. Atiya

— In this paper we introduce a new symbolic type neural tree network called symbolic function network (SFN) that is based on using elementary functions to model systems in a symbolic form. The proposed formulation permits feature selection, functional selection, and flexible structure. We applied this model on the River Flow forecasting problem. The results found to be superior in both fitness ...

Journal: :journal of operation and automation in power engineering 2007
j. fallah ardeshir a. ajami a. jalilvand a. mohammadpour

this paper proposes a flexible power electronic transformer (fpet) for the application in the micro-grids. the low frequency transformer is usually used at the point of common coupling (pcc) to connect the low voltage grid and utility network to each other. the conventional 50hz transformer results in enhanced low voltage-grid power management system during grid-connected operation. in this pap...

This study presents a method to reconstruct a high-resolution image using a deep convolution neural network. We propose a deep model, entitled Deep Block Super Resolution (DBSR), by fusing the output features of a deep convolutional network and a shallow convolutional network. In this way, our model benefits from high frequency and low frequency features extracted from deep and shallow networks...

2007
Václav ŘÍČNÝ

The paper deals with principles and properties of single frequency networks of digital television and radio transmitters. Basic definitions and contextual relationships (guard interval, area of SFN, influence of used modulation parameters etc.) are explained.

Journal: :JCM 2009
Wahida Nasrin Md. Majharul Islam Rajib

Intelligent Underlay Overlay (IUO) scheme is one of the most cost effective solution for capacity enhancement of Global System for Mobile Communication (GSM). However, the overall gain from this type of complex architecture depends on how efficiently it is designed and available radio resources are utilized. This paper proposes a step by step process to design IUO in order to optimize the gain....

1998
M. P. Nesnidal T. Earles L. J. Mawst D. Botez J. Buus

A second-order diffraction grating placed below the active region of a phase-locked resonant antiguided array selects the in-phase array mode in addition to its role as a single-longitudinal-mode selector. This type of array-mode discrimination relies on the fact that the resonant in-phase array mode has significantly better field overlap with the grating region than nonresonant array modes. Fu...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1389

abstract: country’s fiber optic network, as one of the most important communication infrastructures, is of high importance; therefore, ensuring security of the network and its data is essential. no remarkable research has been done on assessing security of the country’s fiber optic network. besides, according to an official statistics released by ertebatat zirsakht company, unwanted disconnec...

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