Results 51 to 60 of about 160,804 (229)
Pervasive and Mobile Computing, 2007 Accurate indoor localization has long been an objective of the ubiquitous computing research community, and numerous indoor localization solutions based on 802.11, Bluetooth, ultrasound and infrared technologies have been proposed. This paper presents the first accurate GSM indoor localization system that achieves median within floor accuracy of 4 m in
Jeffrey Hightower +4 more
openaire +2 more sources
Dynamic Spectrum Refarming of GSM Spectrum for LTE Small Cells
, 2013 In this paper we propose a novel solution called dynamic spectrum refarming (DSR) for deploying LTE small cells using the same spectrum as existing GSM networks.
Lin, Xingqin, Viswanathan, Harish
core +1 more source
Solutions to the GSM Security Weaknesses [PDF]
2008 The Second International Conference on Next Generation Mobile Applications, Services, and Technologies, 2008 Recently, the mobile industry has experienced an extreme increment in number of its users. The GSM network with the greatest worldwide number of users succumbs to several security vulnerabilities. Although some of its security problems are addressed in its upper generations, there are still many operators using 2G systems.
A. A. Beheshti, Mohsen Toorani
openaire +3 more sources
Comparison of measurements of the outer scale of turbulence by three different techniques [PDF]
, 2004 We have made simultaneous and nearly simultaneous measurements of L0, the outer scale of turbulence, at the Palomar Observatory by using three techniques: angle-of-arrival covariance measurements with the Generalized Seeing Monitor (GSM), differential ...
Borgnino, Julien +7 more
core +1 more source
Improvement Majority Function in A5/1 stream cipher Algorithm [PDF]
Engineering and Technology Journal, 2016 Security is an important issue, especially in today’s technologically advanced society. Global System for Mobile Communications (GSM) is a world-wide standard for digital wireless communication.
Hala Bahjat, Mohanad Ali
doaj +1 more source
, 2017 GSM based AMR has low infrastructure cost and it reduces man power. The system is fully automatic, hence the probability of error is reduced. The data is highly secured and it not only solve the problem of traditional meter reading system but also provides additional features such as power disconnection, reconnection and the concept of power management.
Christo Ananth +5 more
openaire +1 more source
Integrasi Wireless Fidelity (WiFi) pada jaringan Universal Mobile Telecommunication System (UMTS)
Jurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems), 2012 Universal Mobile Telecommunication System (UMTS) merupakan sistem telekomunikasi generasi ketiga (3G) hasil pengembangan jaringan Global System for Mobile Communication (GSM) yang memiliki laju data paket 2 Mbps untuk perangkat yang diam di tempat, 384 ...
Endah Budi Purnomowati
doaj +1 more source
ENHANCEMENT OF CODE DIVISION MULTIPLE ACCESS (CDMA) WITHIN THE GSM SYSTEM IN IRAQ
Mağallaẗ Al-kūfaẗ Al-handasiyyaẗDespite the widespread adoption of Global System for Mobile Communications (GSM) in Iraq, the network's capacity and performance limitations have become increasingly apparent, particularly in urban areas with high user density. Currently, LTE (4G) is the
Nabil Abdulwahab Abdulrazaq Baban
doaj +1 more source
Rectified Gaussian Scale Mixtures and the Sparse Non-Negative Least Squares Problem
, 2018 In this paper, we develop a Bayesian evidence maximization framework to solve the sparse non-negative least squares (S-NNLS) problem. We introduce a family of probability densities referred to as the Rectified Gaussian Scale Mixture (R- GSM) to model the
Al-Shoukairi, Maher +4 more
core +1 more source
Retardo en Redes Inalámbricas Colaborativas
Revista Científica, 2020 La radio cognitiva es una tecnología que hace un uso eficiente del espectro y permite a los usuarios secundarios utilizar las oportunidades espectrales de las bandas licenciadas, pero sin interferir con las comunicaciones de los usuarios primarios.
Cesar Augusto Hernández-Suárez +2 more
doaj +1 more source