Publications de Bixio Rimoldi | EPFL Graph Search

Dynamic Routing for Flying Ad Hoc Networks

Dario Floreano, Bixio Rimoldi, Grégoire Hilaire Marie Heitz, Stefano Rosati, Karol Jacek Kruzelecki

This paper reports experimental results on self-organizing wireless networks carried by small flying robots. Flying ad hoc networks (FANETs) composed of small unmanned aerial vehicles (UAVs) are flexible, inexpensive and fast to deploy. This makes them a v ...

Ieee-Inst Electrical Electronics Engineers Inc2016

HMM-Based Error Correction Mechanism for Five-Key Chording Keyboards

Bixio Rimoldi, Pierre Dillenbourg, Adrian Dan Tarniceriu

As different text input devices lead to different typing error patterns, considering the device characteristics when designing an error correction mechanism can lead to significantly improved results. In this paper, we propose and evaluate a spelling corre ...

2015

Fine-Tunning a MAP Error Corrections Algorithm for Five-Key Chording Keyboards

Bixio Rimoldi, Pierre Dillenbourg, Adrian Dan Tarniceriu

Different typing devices lead to different typing error patterns. In addition, different persons using the same device have different error patterns. Considering this, we propose and evaluate a spelling algorithm specifically designed for a five-key chordi ...

2014

Competition of Wireless Providers for Atomic Users

Bixio Rimoldi, Vojislav Gajic

We study a problem where wireless service providers compete for heterogenous wireless users. The users differ in their utility functions as well as in the perceived quality of service of individual providers. We model the interaction of an arbitrary number ...

Ieee-Inst Electrical Electronics Engineers Inc2014

Testbed for Fast-Deployable Flying WiFi Networks

Jean-Christophe Zufferey, Dario Floreano, Bixio Rimoldi, Alberto Jimenez Pacheco, Grégoire Hilaire Marie Heitz, Stefano Rosati, Karol Jacek Kruzelecki

EPFL's Information Processing Group (IPG) and Laboratory for Intelligent Systems (LIS), in conjunction with SenseFly (a LIS spin-off) recently started a project aimed at developing a testbed to experiment with self-organized wireless networks carried by au ...

2013

The Effect of Feedback on Chord Typing

Bixio Rimoldi, Pierre Dillenbourg, Adrian Dan Tarniceriu

The amount of visual feedback when using a mobile device in a busy context is often limited. For example, while texting and walking in a crowded place, we need to focus on the environment and not on the phone. A way to type fast, accurately and with limite ...

2013

LLR Compression for BICM Systems Using Large Constellations

Bixio Rimoldi, Stefano Rosati

Digital video broadcasting (DVB-C2) and other modern communication standards increase diversity by means of a symbol-level interleaver that spans over several codewords. Deinterleaving at the receiver requires a large memory, which has a significant impact ...

Institute of Electrical and Electronics Engineers2013

Implementation of a Wireless Mesh Network of Ultra Light MAVs with Dynamic Routing

Jean-Christophe Zufferey, Dario Floreano, Bixio Rimoldi, Yannick Gasser, Alberto Jimenez Pacheco

This paper describes the implementation and characterisation of a mobile ad-hoc network (MANET) of ultra-light intelligent flying robots. The flying nature of the network makes it suitable to collect or disseminate content in urban areas or challenging ter ...

2012

On the Structure of the Capacity Region of Asynchronous Memoryless Multiple-Access Channels

Bixio Rimoldi, Ninoslav Marina

The asynchronous capacity region of memoryless multiple-access channels is the union of certain polytopes. It is well-known that vertices of such polytopes may be ap- proached via a technique called successive decoding. It is also known that an extension o ...

2012

A Simple Converse of Burnashev's Reliability Function

Bixio Rimoldi, Emre Telatar, Peter Allan Berlin

In a remarkable paper published in 1976, Burna- shev determined the reliability function of variable-length block codes over discrete memoryless channels (DMCs) with feedback. Subsequently, an alternative achievability proof was obtained by Yamamoto and It ...

2009

Asymptotically Optimal Joint Source-Channel Coding with Minimal Delay

Bixio Rimoldi, Marius Kleiner

We present and analyze a joint source-channel coding strategy for the transmission of a Gaussian source across a Gaussian channel in n channel uses per source symbol. Among all such strategies, the scheme presented here has the following properties: i) the ...

IEEE2009

Asymptotically Optimal Joint Source-Channel Coding with Minimal Delay

Bixio Rimoldi, Marius Kleiner

We present and analyze a joint source-channel coding strategy for the transmission of a Gaussian source across a Gaussian channel in n channel uses per source symbol. Among all such strategies, the scheme presented here has the following properties: i) the ...

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Competition of Wireless Providers for Atomic Users: Equilibrium and Social Optimality

Bixio Rimoldi, Vojislav Gajic

We study a problem where wireless service providers compete for heterogenous and atomic (non-infinitesimal) wireless users. The users differ in their utility functions as well as in the perceived quality of service of individual providers. We model the int ...

2009

On Fidelity Per Unit Cost

Bixio Rimoldi, Marius Kleiner

We consider source coding with a ﬁdelity criterion, channel coding with a channel input constraint, and the combined problem of reproducing a source across a noisy channel. All three cases face a similar tradeoff between resource and performance, and the o ...

2009

On the Structure of the Capacity Region of Asynchronous Memoryless Multiple-Access Channels

Bixio Rimoldi, Ninoslav Marina

2008

Game Theoretic Considerations for the Gaussian Multiple Access Channel

Bixio Rimoldi, Vojislav Gajic

We study the behavior of users in a classical Additive White Gaussian Noise Multiple Access Channel. We model users as rational entities whose only interest is to maximize their own communication rate, and we model their interaction as a noncooperative one ...

2008

A Source-Channel Coding Scheme For Discrete Memoryless Channels With Feedback

Bixio Rimoldi, Raja Manakkal

2005

Impact of correlation and coupling on the capacity of MIMO systems

Bixio Rimoldi, Nicolae Chiurtu, Emre Telatar, Volker Pauli

In this work, we consider the multiple antenna systems in which a large number of antennas occupy a given physical volume, and investigate the behavior of the capacity when increasing the number of antennas. In this regime the assumptions of the standard m ...

2004