Benoit Geller

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In this paper, we present a closed-form expression of a Bayesian Cramér-Rao lower bound for the estimation of a dynamical phase offset in a non-data-aided BPSK transmitting context. This kind of bound is derived considering two different scenarios: a first expression is obtained in an off-line context and then, a second expression in an on-line context(More)
An important issue of supporting multi-user video streaming over wireless networks is how to optimize the systematic scheduling by intelligently utilizing the available network resources while, at the same time, to meet each video’s Quality of Service (QoS) requirement. In this work, we study the problem of video streaming over multi-channel multi-radio(More)
This letter deals with the Cramer-Rao bound for the estimation of a hybrid vector with both random and deterministic parameters. We point out the specificity of the case when the deterministic and the random vectors of parameters are statistically dependent. The relevance of this expression is illustrated by studying a practical phase estimation problem in(More)
Optical grid systems have been viewed as a promising virtual computing environment to support distributed real-time directed acyclic graph (DAG) applications. For such a system involving many heterogeneous computing and network resources, faults seem to be inevitable. Therefore, a fault-tolerant DAG scheduling scheme is necessary to improve the performance(More)
Abstract — DVB-T2 was the first industrial standard deploying rotated and cyclic Q delayed (RCQD) modulation to improve performance over fading channels. This enables important gains compared to conventional quadrature amplitude modulations (QAM) under severe channel conditions. However, the corresponding demodulation complexity still prevents its use for(More)
In this work, we investigate the optimal system scheduling for competing multiple description (MD) video streams in a resource-limited wireless multihop network. By joint optimization of MD, rate control and multipath routing, we propose an optimal joint rate control and routing algorithm to solve this problem with constraints that arise from the MD streams(More)