Concept

Wireless LAN

Publications associées (477)

Practical Network Tomography

In this thesis, we investigate methods for the practical and accurate localization of Internet performance problems. The methods we propose belong to the field of network loss tomography, that is, they infer the loss characteristics of links from end-to-en ...

EPFL2012

Degrees of freedom of sparsely connected wireless networks

Michael Christoph Gastpar, Naveen Goela

We investigate how the network connectivity can affect the degrees of freedom (DoF) of wireless networks. We consider a network of n source-destination (SD) pairs and assume that any two nodes are connected with a positive probability p, independent of oth ...

IEEE2012

Distributed throughput optimization over P2P mesh networks using diffusion adaptation

Ali H. Sayed

This work develops a decentralized adaptive strategy for throughput maximization over peer-to-peer (P2P) networks. The adaptive strategy can cope with changing network topologies, is robust to network disruptions, and does not rely on central processors. T ...

IEEE2012

Spatial variability of near surface soil moisture in an alpine catchment: application of a wireless network of meteorological stations

Marc Parlange, Steven Vincent Weijs, Guillermo Barrenetxea Kobas, Raphaël Mutzner

Soil moisture is an essential control on hydrological and meteorological behavior and knowledge of its spatial variability is considered to be of high importance for the performance of distributed hydrological models. Few studies have tried to assess the s ...

2012

A Flexible In Situ Power Monitoring Unit for Environmental Sensor Networks

Alcherio Martinoli, Alexander Bahr, William Christopher Evans

Wireless radios are a great consumer of energy in sensor networks. Retrieving data from a remote deployment in an energy-efficient fashion is a difficult problem, and while solutions have been proposed in literature, real-world systems typically implement ...

2012

Share Risk and Energy: Sampling and Communication Strategies for Multi-Camera Wireless Monitoring Networks

Martin Vetterli, Guillermo Barrenetxea Kobas, Zichong Chen

In the context of environmental monitoring, outdoor wireless cameras are vulnerable to natural hazards. To benefit from the inexpensive imaging sensors, we introduce a multi-camera monitoring system to share the physical risk. With multiple cameras focusin ...

Ieee2012

Reconfigurable parasitic antennas for compact mobile terminals in multiuser wireless systems

Julien Perruisseau-Carrier

This article considers the exploitation of parasitic antenna arrays in multi-user (MU) wireless communication systems by using their adaptive beamforming capabilities in order to improve the average system throughput. The use of parasitic arrays and especi ...

Hindawi Publishing Corporation2012

Band-reject ultra-wideband monopole antenna using patch loading

Anja Skrivervik, Nuno Miguel Faria Pires, Mohsen Koohestani

Proposed is a new simple technique for achieving band rejection characteristics in ultra-wideband monopole antennas. Two band notches were added to an existing UWB antenna by gluing a padding patch printed on a small single-layer piece of commercial substr ...

Inst Engineering Technology-Iet2012

Spatial awareness in robotic swarms through local wireless communications

We propose a fully distributed approach to endow robots in a swarm with awareness of their relative position with respect to the rest of the swarm. Such spatial awareness can be used to support spatially differentiated task allocation or for pattern format ...

2012

Secure key exchange in wireless networks

Christina Fragouli, László Czap

We investigate the problem of exchanging a se- cret key within a group of wireless devices. In particular, we are interested in information theoretically secure key exchange schemes that enable honest nodes of a multi-hop network to establish a secret grou ...

2011

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