Mario Nicola

Mario Nicola
Istituto Superiore Mario Boella (ISMB) | ISMB · Research Division of Navigation Technologies (NavSAS)

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46
Publications
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389
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Introduction
Skills and Expertise

Publications

Publications (46)
Article
The Public Observation (PO) test phase of the Galileo Open Service Navigation Message Authentication (OSNMA) signal is officially opened since November $15^{\text {th}}~2021$ , by the European Union Agency for the Space Programme (EUSPA). During this phase, any interested users is allowed to access the Signal in Space (SIS) for testing purposes, wh...
Article
Full-text available
The authentication of the navigation signals can be considered as the contribution of the system to the robustness against spoofing attacks and it is becoming an important requirement for a growing number of user communities. GPS and Galileo systems are proposing evolutions of their civil signals to embed features of authentication. For Galileo, th...
Article
Full-text available
Many GNSS applications have been experiencing some constantly growing needs in terms of security and reliability. To address some of them, both GPS and Galileo are proposing evolutions of their legacy civil signals, embedding features of authentication. This paper focuses on the Galileo Open Signal Navigation Message Authentication (OSNMA) and desc...
Article
Full-text available
Nowadays, the Global Navigation Satellite Systems (GNSS) technology is not the primary means of navigation for civil aviation and Air Traffic Control, but its role is increasing. Consequently, the vulnerabilities of GNSSs to Radio Frequency Interference, including the dangerous intentional sources of interference (i.e., jamming and spoofing), raise...
Article
Full-text available
Precision Agriculture (PA) refers to applications asking for reliable and highly available precise positions, at centimeter level, in most of operational scenarios. Machinery guidance, automatic steering and controlled traffic farming enable machinery to move along repeatable tracks on the field, minimizing pass-to-pass errors and overlaps. In the...
Article
Following the issue by the Galileo Service Center of the Notice Advisory to Galileo Users (NAGU) reporting Service Outage for all the Galileo satellites, as curious Galileo users our team of researchers of the NavSAS group started an independent investigation of the received signals in space (SISs). Available at: https://www.gpsworld.com/why-gali...
Article
Many infrastructures that shape our lifestyle depend on the GPS. Even though not used for positioning, these infrastructures need GPS to derive a precise time synchronization necessary for their operations. Examples are power distribution grids, gateways for financial transactions, and telecommunication networks. However, GPS receivers, and more in...
Article
Full-text available
During the last decade, the number of applications for land transportation that depend on systems for accurate positioning has significantly increased. Unfortunately, systems based on low cost Global Navigation Satellite System (GNSS) components harshly suffer signal impairments due to the environment surrounding the antenna, but new designs based...
Conference Paper
Full-text available
The paper deals with the development of a Robust Position Unit (RPU) based on the real-time implementation of an advanced positioning algorithm. The RPU uses a tightly-coupled technique between a mass market single frequency GNSS chipset with a low cost Inertial Measurement Unit (IMU) based on Micro Electro-Mechanical Systems and an odometer. The t...
Conference Paper
The availability and accuracy constraints that must be satisfied by GNSS-based positioning systems make the Kalman filter solution a key point in order to reach the required level of performance. For example, the update process of the filter requires a careful weighting of the GNSS measurements to work properly. This paper presents a method that in...
Conference Paper
GNSS receivers take advantage from the software defined radio approach because they can use the intrinsic flexibility to evolve toward new satellite positioning systems and applications. For this type of implementation the use of embedded platforms is particularly interesting, due to the associated portability and low cost. This paper describes the...
Conference Paper
In modern communications, the flexibility is a key point in the implementation of receivers because it eases the development of new products and the introduction of new features in already existing ones. In the silicon-based products the extra-cost associated to the introduction of a new functionality is mainly due to the development process rather...
Conference Paper
The Software Defined Radio (SDR) technology, applied to the reception of Global Navigation Satellite Signals (GNSS), allows the implementation of a positioning device with a high flexibility level. The advantage is twofold: not only the GNSS SDR receiver can be easily updated during its operational life, but it becomes an outstanding tool in protot...
Conference Paper
In recent years, research activities in the field of Satellite Navigation have boosted worldwide. At the same time, it has become evident that few educational opportunities in the field were available for students and there was a need to develop dedicated tools for hands-on sessions. To partially answer this need, the NavSAS Group has developed N-F...
Conference Paper
Full-text available
On the 20th of October 2011, the first two satellites of the Galileo constellation have been launched successfully. The possibility to have these two satellites in orbit represented a great opportunity for researchers to receive and monitor the first Galileo signals. After the satellite switch-on, we continuously monitored the signal broadcast by b...
Conference Paper
“Peers-based aiding GNSS” refers to collaborative systems composed by GNSS receivers that exchange aiding data in order to improve their performance. One of the main issues related to this type of systems is the time synchronization between receivers. The required precision of the synchronization depends on the type of data the receivers exchange....
Conference Paper
Services based on Global Navigation Satellite Systems (GNSS) are currently in use in many critical networked infrastructures and crucial applications. Within the described scenario, the importance for the GNSS community of investigating the effects of spoofing attacks, together with anti-spoofing techniques, appears essential. This paper describes...
Article
A VLSI encoder and decoder implementation for the IEEE 802.16 WiMax convolutional turbo code is presented. Architectural choices employed to achieve high throughput, while granting a limited occupation of resources, are addressed both for the encoder and decoder side, including also the subblock interleaving and symbol selection functions specified...
Article
Full-text available
N-Gene is a GNSS receiver completely designed in software, able to run in real-time on a common Personal Computer. This kind of receiver implements the concept of Software Defined Radio (SDR) and can be used as a test-bed for the development of innovative algorithms and for their valida- tion in a real-time environment. This paper presents the so-...
Article
A low complexity, parallel, collision-free interleaver architecture for the WiMax duo-binary turbo decoder is presented. The proposed architecture dynamically adapts to different block sizes and it features reduced complexity resorting to parallel circular shifting interleavers. Moreover, it sustains a peak throughput of nearly 90 Mb/s with a 200 M...
Article
This work proposes a VLSI decoding architecture for concatenated convolutional codes. The novelty of this architecture is twofold: 1) the possibility to switch on-the-fly from the universal mobile telecommunication system turbo decoder to the WiMax duo-binary turbo decoder with a limited resources overhead compared to a single-mode WiMax architectu...
Conference Paper
Modern video surveillance applications pose strict constraints on implemented algorithms in order to obtain low complexity, low cost, and low power consumption. Motion detection algorithms enable good power efficiency since the system may be woken up only when motion is detected. In this paper an algorithm with a high degree of reliability against...
Conference Paper
Modern wireless systems have to achieve very high data rates over noisy channels. Channel codes are usually used to guarantee reliable communication, but validating a system with extremely low Bit Error Rate (BER) requires the simulation of a huge number of samples. The simulation complexity furtherly increases if we want to take into account the j...
Conference Paper
Full-text available
Orthogonal frequency division multiplexing (OFDM) is a data transmission technique which is used in wired and wireless digital communication systems. In this technique, fast Fourier transformation (FFT) and inverse FFT (IFFT) are kernel processing blocks in an OFDM system, and are used for data (de)modulation. OFDM systems are increasingly required...
Conference Paper
In this paper, the design and implementation of a new high performance hardware channel emulator is presented. The purpose of the developed emulator is to efficiently reproduce in a laboratory environment the accurate behaviour of several effects of the radio channel over a multiple antennas wireless communication system, including AWGN (additive w...
Conference Paper
In this paper, the design and implementation of a new high performance hardware channel emulator is presented. The purpose of the developed emulator is to efficiently reproduce in a laboratory environment the accurate behaviour of several effects of the radio channel over a multiple antennas wireless communication system, including AWGN (additive w...
Conference Paper
2G wireless systems have gained a widespred diffusion. Due to this fact, the transition to 3G ones can be critical. A possible solution to the interoperability problem can came from the Software Defined Radio paradigm. In this paper a complete, reconfigurable CDMA receiver implementation over a Xilinx XCV300E FPGA is described.
Article
Full-text available
The trend for wireless systems is characterized by the necessity to support multiple standards and transmission modes. This calls for user-transparent system reconfigurations between wireless networks and user terminals. System reconfig-uration, in turn, requires flexible implementations. In addition to flexibility, the implementations must meet ti...

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