Mathieu Grossard 1 and Micky Rakotondrabe 2,* 1 Interactive Robotics Laboratory (IRL) CEA LIST DIGITEO Labs, Rue Noetzlin, Bâtiment 660, 91190 Gif sur Yvettes, France; [email protected] 2 Department of Automatic Control and MicroMechatronic Systems (AS2M) FEMTO-ST Institute CNRS UMR6174—University of Franche-Comté at Besancon-UBFC-ENSMM-UTBM, 25000 Besancon, France * Correspondence: mrako...

Metod Saniga, Michel Planat, Petr Pracna and Péter Lévay Astronomical Institute, Slovak Academy of Sciences SK-05960 Tatranská Lomnica, Slovak Republic ([email protected]) 2 Institut FEMTO-ST, CNRS, 32 Avenue de l’Observatoire F-25044 Besançon, France ([email protected]) J. Heyrovský Institute of Physical Chemistry, v.v.i., Academy of Sciences of the Czech Republic, Doleǰskova 3, CZ-1822...

Background: In this prospective cohort study (flap-off epi-eye-surgery), the results of femtosecond optical maser-assisted in situ keratomileusis (femto-eye-surgery) and epipolis eye-surgery refractile surgery for myopia were compared.
 Purpose: Comparison or myopic astigmia improvement by a six- multidimensional amaris exciter maser establish that both femto- flap-off epi-eye-surgery are ...

Femtocell technology has become a radical approach to improve network capacity and coverage. Because femtocells can use the same frequency bands as the cellular network, the cochannel interference is a critical issue in femto networks. To efficiently reduce interference between femto BS and other BSs, low duty mode (LDM) operation has been developed. In this work, we construct a mechanism integ...

In wireless access network optimization, today’s main challenges reside in traffic offload and in the improvement of both capacity and coverage networks. The operators are interested in solving their localized coverage and capacity problems in areas where the macro network signal is not able to serve the demand for mobile data. Thus, the major issue for operators is to find the best solution at...

The interference mitigation technique based on fractional frequency reuse (FFR) provides improved cell-edge performance with similar overall cell capacity as that of systems with the frequency reuse factor of one. Furthermore, frequency sub-band allocation by FFR has the benefit of allowing flexibility for the deployment of femto-cells through frequency partitioning. Determination of a proper f...

Femtocells represent a novel configuration for existing cellular communication, contributing towards the improvement of coverage and throughput. The dense deployment of these femtocells causes significant femto-macro and femto-femto interference, consequently deteriorating the throughput of femtocells. In this study, we compare two heuristic approaches, i.e., particle swarm optimization (PSO) a...

In femto/macro cellular networks, the stability and fairness problems caused by the unplanned and random characteristic of femtocells must be solved. By applying queueing theory in IP based femto/macro cellular networks, we found the stability condition, and described two kinds of cell section policies of users. As a main contribution, we provided the adaptive channel distribution algorithm whi...

Energy Efficiency has become a critical metric in the current wireless communication and network because the energy spent for operating the networks is more. In particular, the base station is the most energy consuming part of a mobile network. This proposes an energy efficient Femtocells Power management scheme for enterprise environment.In order to achieve Power saving, this use the sleep mod...

The purpose of writing this article is to present and study femtocellular technologies for mobile cellular networks. With the introduction fourth 4G-LTE fifth 5G generation systems, term femto cell began be strongly mentioned. Femto cells are very small that provide service users with a home base station connect telecommunications operator's network. femtocell mainly looking ever higher data ra...