Results 31 to 40 of about 266,557 (240)
NOVASINERGIA, 2020 La creciente demanda de datos a través de las redes móviles y la búsqueda de servicios más eficientes por parte de los usuarios han inducido a la generación de nuevas técnicas que incrementen la eficiencia espectral.
Néstor Estrada Brito +1 more
doaj +1 more source
EVALUATION OF VOICE TRANSMISSION QUALITY IN THE LTE NETWORKS
Information and Telecommunication Sciences, 2021 Background. LTE mobile networks combine packet network technology and radio technology. Parameters of packet and radio subsystems significantly affects the quality of all traffic types transmission, especially telephone traffic, as the most demanding to ...
Іван Ветошко +1 more
doaj +1 more source
A new Power Efficient – Delay Aware Downlink Algorithm for 3GPP LTE Cellular Networks [PDF]
Port Said Engineering Research Journal, 2020 Scheduling in downlink transmission in long term evolution (LTE) is a very important process accomplished in the eNodeB. Through the scheduling process, the network dynamically allocates the available radio Resource Blocks (RBs) to users based on the ...
Osama Refaat +3 more
doaj +1 more source
Next Generation Dynamic Inter-Cellular Scheduler [PDF]
International Journal of Electronics and Telecommunications, 2019 Orthogonal frequency division multiple access (OFDMA) in Long Term Evolution (LTE) can effectively eliminate intra-cell interferences between the subcarriers in a single serving cell.
Mert Yağcıoğlu, Oğuz Bayat
doaj +1 more source
Space-Time-Frequency Machine Learning for Improved 4G/5G Energy Detection [PDF]
International Journal of Electronics and Telecommunications, 2020 In this paper, the future Fifth Generation (5G New Radio) radio communication system has been considered, coexisting and sharing the spectrum with the incumbent Fourth Generation (4G) Long-Term Evolution (LTE) system.
Małgorzata Wasilewska, Hanna Bogucka
doaj +1 more source
, 2015 Two distinct halo populations were found in the solar neighborhood by a series of works. They can be clearly separated by [alpha\Fe] and several other elemental abundance ratios including [Cu/Fe]. Very recently, a non-local thermodynamic equilibrium (non-
Nissen, P. E. +3 more
core +1 more source
Local Thermal Equilibrium in Quantum Field Theory on Flat and Curved Spacetimes [PDF]
, 2010 The existence of local thermal equilibrium (LTE) states for quantum field theory in the sense of Buchholz, Ojima and Roos is discussed in a model-independent setting.
Buchholz D +7 more
core +1 more source
Hydrogen and helium line formation in OB dwarfs and giants. A hybrid non-LTE approach
, 2007 Aims: Hydrogen and helium line spectra are crucial diagnostic features for the quantitative analysis of OB stars. We compute synthetic spectra based on a hybrid non-LTE approach in order to test the ability of these models to reproduce high-resolution ...
Anders +57 more
core +1 more source
Non-LTE calculations for neutral Na in late-type stars using improved atomic data
, 2011 Neutral sodium is a minority species in the atmospheres of late-type stars, and line formation in local thermodynamic equilibrium (LTE) is often a poor assumption, in particular for strong lines.
A. K. Belyaev +45 more
core +1 more source
Non-LTE treatment of molecules in the photospheres of cool stars [PDF]
, 2000 We present a technique to treat systems with very many levels, like molecules, in non-LTE. This method is based on a superlevel formalism coupled with rate operator splitting.
Andreas Schweitzer +4 more
core +2 more sources