نتایج جستجو برای: single frequency network

تعداد نتایج: 1889398  

Journal: :Frontiers in Marine Science 2019

Journal: :High Power Laser Science and Engineering 2015

In wide area measurement systems, PMUs are the main component measuring real time synchronized data from different buses. Installation of PMUs at all buses is a primary way to provide full observability of the power network. However, it is not practical in real networks due to the relatively expensive cost of PMUs and other technical limitations. Optimal PMU Placement (OPP) is an optimization p...

Journal: :Physica A: Statistical Mechanics and its Applications 2020

2005
Antti Tölli Markku Juntti

It is foreseen that a single (wideband) air interface mode is not sufficient for achieving the high spectral efficiency targets set for next generation wireless system. A dual-bandwidth approach is adapted to simultaneously provide wide coverage and high capacity in a large range of different operating environments. In this paper, hybrid diversity-multiplexing scheme, where Space-time Turbo Cod...

Measurements of the dual frequency Global Positioning System (GPS) receivers can be used to calculate the electron density and the total electron content (TEC) of the ionosphere layer of the Earth atmosphere. TEC is a key parameter for investigating the ongoing spatial and temporal physical process of the ionosphere. For accurate estimation of TEC from GPS measurements, GPS satellites and GPS r...

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