Guerino Giancola

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A MAC protocol for Ultra Wide Band (UWB) radio networks named (UWB)2 is proposed. The algorithm exploits typical features of impulse radio such as large processing gain, and is conceived in conjunction with a synchronization strategy which foresees the presence of a synchronization sequence in each transmitted packet. (UWB)2 adopts a pure Aloha approach;(More)
Pulse shaping in Ultra-Wide Band (UWB) networks based on Impulse Radio (IR) is a viable way for adapting the Power Spectral Density (PSD) of transmitted signals to spectral requirements. The proposed pulse shaping method is based on linear combination of a set of base waveforms obtained by differentiation of the Gaussian pulse. Strategies for selecting(More)
Modeling Multi-User Interference (MUI) is crucial in the design of wireless networks. In the case of Impulse Radio (IR)Ultra Wide Band (UWB) networks, most of the adopted models are inspired by the legacy of the reference literature on spread spectrum communications, and do not address specific features for IR systems, where spectrum spreading is basically(More)
Time hopping ultra wide band (TH-UWB) commonly encodes the data symbols by shifting the position of the transmitted pulses by a quantity that is quantized over the inter-pulse interval range. In this paper, we relax the hypothesis of a discrete value for the time shift introduced by the TH code, by considering the possibility of generating real-valued codes(More)
Modeling the resource manager of an ultra wide band (UWB) network is the main object of this paper. The model is tested in two different application scenarios: (i) a UWBWLAN access network to a backbone where the resource management module is implemented at the access points (APs); (ii) a UWB ad hoc network for either local communications or data exchange(More)
When considering applications requiring QoS it is crucial to adopt in the MAC adaptive resource allocation strategies in order to reduce system load. This paper proposes an analytical procedure for optimizing resource allocation in the case of mobile Ultra Wide Band (UWB) users in an indoor environment. The proposed analysis incorporates both the user(More)
Modeling Multi User Interference (MUI) in Impulse Radio (IR) – Ultra Wide Band (UWB) networks is addressed in this paper. The reference scenario consists of multiple asynchronous users transmitting IR-UWB signals using Pulse Position Modulation (PPM) in combination with Time Hopping (TH) coding. We provide a novel analytical expression for the average BER(More)
Time Hopping Ultra Wide Band (TH UWB) commonly encodes the data symbols by shifting the position of the transmitted pulses by a quantity that is quantized over the inter-pulse interval range. In this paper, we relax the hypothesis of a discrete value for the time shift introduced by the TH code, by considering the possibility of generating real-valued codes(More)
We formalize a model for a self-organizing network of nodes that operate according to the UWB principle based on hybrid modelling formalism. We design the rules that lead to the formation of the network and in particular an admission control procedure that is capable to handle both continuous and discrete perturbations, while maintaining the network in a(More)