A5083637183- Wireless Communication Networks Research
- Power Line Communications and Noise
- Wireless Networks and Protocols
- Advanced Wireless Network Optimization
- Bluetooth and Wireless Communication Technologies
- Advanced Wireless Communication Techniques
- Mobile Ad Hoc Networks
- Energy Efficient Wireless Sensor Networks
- Vehicular Ad Hoc Networks (VANETs)
- Opportunistic and Delay-Tolerant Networks
- Indoor and Outdoor Localization Technologies
- IoT Networks and Protocols
- Distributed Sensor Networks and Detection Algorithms
- Energy Harvesting in Wireless Networks
- Advanced MIMO Systems Optimization
- Wireless Communication Security Techniques
- Antenna Design and Analysis
- Millimeter-Wave Propagation and Modeling
- Wireless Body Area Networks
- Microwave Imaging and Scattering Analysis
- Target Tracking and Data Fusion in Sensor Networks
- Satellite Communication Systems
- Cooperative Communication and Network Coding
- Metamaterials and Metasurfaces Applications
- IoT and Edge/Fog Computing
University of Bologna
2016-2025
Laboratori Guglielmo Marconi (Italy)
2018-2024
Consorzio Nazionale Interuniversitario per le Telecomunicazioni
2015-2024
Marconi University
2015-2024
Zambon (Italy)
2018-2020
Roma Tre University
2020
University of Sannio
2020
Institute of Electronics, Computer and Telecommunication Engineering
2006-2020
GNA University
2006-2020
University of Trento
2020
Information and Communication Technologies (ICTs), through wireless communications the Internet of Things (IoT) paradigm, are enabling keys for transforming traditional cities into smart cities, since they provide core infrastructure behind public utilities services. However, to be effective, IoT-based services could require different technologies network topologies, even when addressing same urban scenario. In this paper, we highlight aspect present two city testbeds developed in Italy. The...
Low-power wide-area networks (LPWANs) have become an important enabler for the Internet of Things (IoT) connectivity. Application domains, such as smart cities, agriculture, intelligent logistics, and transportation, require communication technologies that combine long transmission ranges energy efficiency. Recent future trends make long-range network (LoRaWAN) narrowband-IoT (NB-IoT) most prospective drivers IoT business. In this article, after discussing main features two technologies, we...
Street lighting characterizes many smart city initiatives around the world. In fact, significant savings can be achieved by not only replacing traditional luminaires with low-power LEDs, but also providing streetlights light controllers and network connectivity, allowing introduction of a sensible intensity management reduction maintenance costs. Moreover, if designed far-looking view, infrastructure could support city-wide Internet Things services, becoming key enablers revolution, in 5G...
Among the low power wide area network communication protocols for large scale Internet of Things, LoRaWAN is considered one most promising, owing to its flexibility and energy-saving capabilities. For these reasons, during recent years, scientific community has invested efforts into assessing fundamental performance limits understanding trade-offs between parameters different application scenarios. However, this task cannot be effectively accomplished utilizing only analytical methods,...
In this paper, the issue of Bluetooth and IEEE802.11b coexistence in a heterogeneous environment is addressed by means an integrated analytical approach. The methodology proposed carefully takes both physical (i.e., thermal noise, propagation, interference, modulation formats, coding techniques) medium access control (frequency hopping, packet structures, traffic loads) aspects into account. This model can be easily implemented when developing network simulators, thus avoiding need extensive...
This paper is motivated by the concept that successful, effective, and sustainable implementation of smart city paradigm requires a close cooperation among researchers with different, complementary interests and, in most cases, multidisciplinary approach. It first briefly discusses how such methodology, transversal to various disciplines as architecture, computer science, civil engineering, electrical, electronic telecommunication social science behavioral etc., can be successfully employed...
The LoRa modulation scheme is arousing a growing interest in the Internet of Things community as it adopted by emerging LoRaWAN technology. In this paper, we firstly analyse baseband processing for generation signals at transmitter side, providing simple algorithm that leverages digital signal techniques to reduce modulator complexity. Secondly, analytically investigate demodulation technique. Quite surprisingly, found its effectiveness depends on particular choice sampling frequency...
Next-generation wireless networks will see the convergence of communication and sensing, also exploiting availability large bandwidths in Terahertz (THz) spectrum electrically antenna arrays on handheld devices. In particular, it is envisaged that user devices be able to automatically scan their surroundings by steering a very narrow beam collecting echoes reflected objects walls derive map indoors infer users' trajectories using simultaneous localization mapping (SLAM) techniques. this...
Routing strategies deeply affect the performance of wireless ad hoc networks, in terms coverage, interference, and delay. In this work, we investigate impact different routing on overall amount interference generated a distributed network with power control. To end, derive an analytical model for evaluation mean value variance when signal level control is adopted strategies, based long-hop short-hop relay selections schemes, are considered. This allows us to quantify average number hops path...
The interworking of different radio access technologies aimed at providing always the best service to mobile users is future wireless communications. Many researchers are already investigating appropriate architectural solutions, coexistence problems, common resource management algorithms and other topics concerning this issue. In paper we illustrate a simulation platform developed in our research group investigate performance test new strategies such networks. Our purpose, however, not show...
Using vehicles as sensors for traffic and environment monitoring is a new paradigm that opens the way to worthwhile applications. Data collected on board are usually delivered through cellular network, with consequent overloading risk. This paper focuses alternative adoption of short range vehicle-to-vehicle (V2V) vehicle-to-roadside (V2R) communications, particular reference wireless access in vehicular (WAVE)/IEEE802.11p technology. Specifically, we propose validate, simulations urban...
Considering vehicles as sensors for traffic and pollution information is a new paradigm to monitor the environment open way an efficient smart navigation. In this work we focus on uplink acquisition of from toward remote control center. With increase in number equipped with board units (OBUs) enabling cellular transmissions, service leading higher loads network itself and, consequently, costs. paper discuss opportunity take advantage vehicle-to-vehicle (V2V) vehicle-to-roadside...
The behavior of a wireless sensor network dedicated to distributed estimation tasks may be significantly altered by the presence nodes whose sensors are defective and produce erroneous measurements. This paper proposes analyzes performance two algorithms help each node in determining whether it is equipped with sensor. A first collects data from its neighborhood, processes them decide, using some generic local outlier detection test, these contain outliers broadcasts result. Then, determines...
This article proposes two average consensus algorithms exploiting the memory of agents. The performance proposed as well several state-of-the-art is evaluated considering different communication ranges, and evaluating impact transmission errors. To compare asymptotic finite-time schemes, ε-convergence time adopted for a fair comparison. A discussion about requirements, overhead, priori information on network topology, robustness to errors provided.
Mobile communication systems beyond the third generation will see interconnection of heterogeneous radio access networks (UMTS, WiMax, wireless local area networks, etc.) in order to always provide best quality service (QoS) users with multimode terminals. This scenario poses a number critical issues, which have be faced get from integrated network. In this paper, we investigate issue parallel transmission over multiple technologies (RATs), focusing attention on QoS perceived by final users....
A virtual traffic light (VTL) is a mechanism that allows vehicles to autonomously solve priorities at road junctions in the absence of fixed infrastructures (i.e., conventional lights). To develop an effective VTL system, communication between crucial factor and can be handled either using cellular infrastructure or adopting vehicle-to-vehicle (V2V) paradigm. In this paper we present design, implementation, field trial which exploits V2V communications based on IEEE 802.11p. Specif-ically,...
Wireless channel reciprocity can be exploited by two users willing to achieve confidential communications over a public as common source of randomness for the generation secret key. This paper presents an analytical framework investigating amount information that characterizes wireless multi-dimensional Gaussian channels used randomness. The intrinsic secrecy content wide-sense stationary in frequency, time and spatial domains is derived through asymptotic analysis. Some significant case...
The most relevant impairment experienced by on-channel repeaters (OCRs) in single frequency networks scenarios is the presence of a coupling-channel between transmitting and receiving antennas, that generates unwanted echoes. This phenomenon causes degradation repeated signal and, above all, could lead to instability OCRs, owing positive feedback result. For this reason, OCRs are usually equipped with echo canceller units, aimed at removing coupling contributions. In paper, we consider...
The Long Range (LoRa) modulation enables low-cost and low-power communications, serving as the foundation for widely adopted terrestrial wide-area network (LPWAN) technology known LoRaWAN. Owing to its effectiveness, this scheme is emerging a potential option provide direct-to-satellite (DtS) connectivity supporting internet-of-things (IoT) applications in remote or hard-to-reach areas, complementing existing networks. Besides link budget interference, Doppler effect one of main challenges...
In this paper two simple but efficient call admission control (CAC) strategies for IEEE 802.11 WLANs are investigated, which both based on a centralized evaluation of the current network congestion level. A realistic scenario has been considered proper choice CAC parameters as well assessment performance level they provide different traffic mixes. Simulation results show that investigated could significantly improve users satisfaction and fairness