Giampaolo Mazzini

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In recent years, automated audio recognition is arising as a relevant issue. One of the most successful approaches has proved to be the Philips method [1], by Haitsma et al.. Our work exploits this framework in order to allow for a better tuning of the algorithm. In particular, we show that more accurate hashes do not always lead to a better performance,(More)
In recent years there has been a growing interest in the commercial deployment of NLP technologies. This paper presents SiSSA, a project whose main aim is that of developing an infrastructure for prototyping, editing and validation of NLP application architectures. The system will provide the user with a graphical environment for (1) selecting the NLP(More)
In this paper, a distributed power control mechanism for ad hoc networks is proposed and investigated. This mechanism, acting at different layers, reduces the power consumption maintaining similar behavior, in terms of delay and throughput, as classic schemes. In the proposed strategy, the generic sender uses an appropriate power level to transmit its(More)
In this paper we propose a novel data dissemination protocol for multisink wireless sensor networks based on a geographic random forwarding routing approach. The proposed protocol exploits the intrinsic broadcast nature of the wireless channel in order to allow a reliable and efficient data delivery to a set of data sink in networks with an aggressive(More)
The DepAuDE project wants to develop a design framework to evaluate which techniques, tools and methodologies are best suited to obtain dependability for embedded applications that are distributed on multiple levels. In a second step, it will develop and evaluate elements (both intra-site and inter-site) of an architecture to make these applications more(More)
In this paper we investigate the behaviour of M-GeRaf, Multisink GeRaf, a data dissemination protocol for multisink wireless sensor network environments based on a geographic random forwarding routing approach. The protocol exploits the intrinsic broadcast nature of the wireless channel in order to allow a reliable and efficient data delivery to a set of(More)
The DepAuDE project wants to evaluate which techniques, tools and methodologies are best suited to obtain dependability for embedded applications that are distributed on multiple levels. In a second step, it will develop and evaluate elements (both intra-site and inter-site) of an architecture to make these applications more dependable under these dynamic(More)
The paper presents an analysis of the route acquisition process in the ad hoc on demand distance vector (AODV) routing protocol. We develop an analytical model describing the probability of realizing the route request process in a certain number of hops, taking into account some possible errors and link breaks during the path toward destination. Comparisons(More)
  • G. Mazzini
  • 2005
This paper is devoted to the analytical investigation of an ARQ scheme including the possibility to block the transmissions when the physical layer shows an error burst. The error model is taken by a two states Markov model. The ARQ is blocked when the channel is in fault because it makes not sense to continue to loose energy by attempting transmission over(More)