Giacomo Bacci

Università di Pisa | UNIPI · Department of Information Engineering

Holographic MIMO (hMIMO) systems with a massive number of individually controlled antennas N make minimum mean square error (MMSE) channel estimation particularly challenging, due to its computational complexity that scales as $N^3$ . This paper investigates uniform linear arrays and proposes a low-complexity method based on the discrete Fourier tr...

Rainfall precipitation maps are usually derived based on the measurements collected by classical weather devices, such as rain gauges and weather stations. This article aims to show the benefits obtained by opportunistic rainfall measurements based on signal strength measurements provided by commercial-grade satellite terminals (e.g., used in TV br...

Modern MIMO communication systems are almost exclusively designed under the assumption of locally plane wavefronts over antenna arrays. This is known as the far-field approximation and is soundly justified at sub-6-GHz frequencies at most relevant transmission ranges. However, when higher frequencies and shorter transmission ranges are used, the wa...

Effective integration of terrestrial and non-terrestrial segments is one of the key research avenues in the design of current and future wireless communication networks. To this aim, modern communication-satellite constellations intend to attain sufficiently high throughput in terms of bit rate per unit area on the ground by rather aggressive patte...

Effective integration of terrestrial and non-terrestrial segments is one of the key research avenues in the design of current and future wireless communication networks. To this aim, modern communication-satellite constellations intend to attain sufficiently high throughput in terms of bit rate per unit area on the ground by rather aggressive patte...

Modern MIMO communication systems are almost exclusively designed assuming locally plane wavefronts over antenna arrays. This is known as the far-field approximation and is soundly justified at sub-6-GHz frequencies at most relevant transmission ranges. However, when higher frequencies and shorter transmission ranges are used, the wave curvature ov...

Accurate measurement and monitoring of precipitation is crucial for many applications, such as flood and drought risk assessment and management. Conventional meteorological devices for estimating precipitation (i.e., rain gauges, disdrometers, active and passive remote sensors, be they ground-based, spaceborne, or airborne) have their own strengths...

In future communication satellite systems the adoption of higher frequencies as Q/V-band (around 40 GHz for downlink and 50 GHz for uplink) is seen as the promising step forward to achieve higher performance in terms of total system throughput. The envisaged usage of these frequency bands, bringing an additional 5 GHz bandwidth in each polarization...

We present the NEFOCAST project (named by the contraction of "Nefele", which is the Italian spelling for the mythological cloud nymph Nephele, and "forecast"), funded by the Tuscany Region, about the feasibility of a system for the detection and monitoring of precipitation fields over the regional territory based on the use of a widespread network...

Massive Multiple-Input Multiple-Output (mMIMO) is emerging as a cornerstone technology for the 5G. It promises to scale up the performance of the conventional communication systems by growing the number of antennas at the base station side. This paper proposes a decentralized, scalable, and energy efficient radio resource allocation method tailored...

Software Defined Radio (SDR) is currently one of the main topics of interest in military communications, as well as in civil ones. Since 2002, the Italian Ministry of Defense (MoD) has identified the SDR technology as a strategic capability. In this respect, Italy has become part of the major multinational programs related to military SDR and wavef...

The aim of this tutorial is to provide an overview, although necessarily incomplete, of game theory (GT) for signal processing (SP) in networks. One of the main features of this contribution is to gather in a single article some fundamental game-theoretic notions and tools that, over the past few years, have become widespread in the SP literature....

This paper deals with the power allocation problem in a multipoint-to-multipoint network, which is heterogenous in the sense that each transmit and receiver pair can arbitrarily choose whether to selfishly maximize its own rate or energy efficiency. This is achieved by modeling the transmit and receiver pairs as rational players that engage in a no...

In this lecture note, we introduce the basic concepts of game theory (GT), a branch of mathematics traditionally studied and applied in the areas of economics, political science, and biology, which has emerged in the last fifteen years as an effective framework for communications, networking, and signal processing (SP). The real catalyzer has been...

This work develops power control algorithms for bit/Joule energy efficiency (EE) maximization in wireless networks. Unlike previous related works, minimum-rate constraints are imposed and the signal-to-interference-plus-noise ratio takes a more general expression which encompasses some of the most promising 5G candidate technologies. Both network-c...

In this paper, we investigate the power control problem in a cooperative network with multiple wireless transmitters, multiple amplify-and-forward relays, and one destination. The relay communication can be either full duplex or half-duplex, and all source nodes interfere with each other at every intermediate relay node, and all active nodes (trans...

In this tutorial, the basics of game theory are introduced along with an overview of its most recent and emerging applications in signal processing. One of the main features of this contribution is to gather in a single paper some fundamental game-theoretic notions and tools which, over the past few years, have become widely spread over a large num...

The evolution of tactical radio has always been in contrast with money saving, both for the technical requirements of radio military standards and for the cost of new technological solutions. Until now hundreds of radio standards are born to satisfy the need to communicate in several ways and to operate in different scenarios and frequency ranges,...

SDR is today one of the most appealing technology both for military and commercial market. Among the main benefits of SDR there are flexibility and portability, given by the possibility to develop Waveform (WF) independently from the platforms where they will be hosted. this makes the signal processing completely decoupled from the RF hardware. For...

This paper studies a resource allocation problem for a cooperative network with multiple wireless transmitters, multiple full-duplex amplify-and-forward relays, and one destination. A game-theoretic model is used to devise a power control algorithm among all active nodes, wherein the sources aim at maximizing their energy efficiency, and the relays...

In this tutorial, the basics of game theory are introduced along with an overview of its most recent and emerging applications in signal processing. One of the main features of this contribution is to gather in a single paper some fundamental game-theoretic notions and tools which, over the past few years, have become widely spread over a large num...

This work proposes a distributed power allocation scheme for maximizing energy efficiency in the uplink of orthogonal frequency-division multiple access (OFDMA)-based heterogeneous networks (HetNets). The user equipment (UEs) in the network are modeled as rational agents that engage in a non-cooperative game where each UE allocates its available tr...

We apply non-binary coding to the two-way relay channel and evaluate two decoding schemes for the multiple-access phase at the relay: joint decoding for both users and separate decoding for a linear combination of both packets. We evaluate several efficient modulation schemes which combine favorably with non-binary coding and find that joint decodi...

In this work, we derive a distributed resource allocation scheme for the uplink of an OFDMA-based small-cell network. The mobile terminals are modeled as utility-driven rational agents that aim at maximizing the number of bits correctly delivered at destination per unit of energy consumed, under minimum-rate constraints. The theoretical analysis of...

In this work, we derive a distributed power control algorithm for energy-efficientuplink transmissions in interference-limited cellular networks, equipped with either multiple or shared relays. The proposed solution is derived by modeling the mobile terminals as utility-driven rational agents that engage in a noncooperative game, under minimum-rate...

This paper presents an energy-efficient power allocation for relay-aided heterogeneous networks subject to coupling convex constraints, that make the problem at hand a generalized Nash equilibrium problem. The solution to the resource allocation problem is derived using a sequential penalty approach based on the advanced theory of quasi variational...

This work proposes a distributed power allocation scheme for maximizing the energy efficiency in the uplink of non-cooperative small-cell networks based on orthogonal frequency-division multiple-access technology. This is achieved by modeling user terminals as rational agents that engage in a non-cooperative game in which every terminal selects the...

Energy-efficient communications are becoming increasingly important as battery technology has not kept up with the increasing requirements of ubiquitous multimedia applications. In this work, we start dealing with the power allocation problem in a multipoint-to-multipoint network in which the transmit and receiver pairs are modeled as rational play...

In this letter, we derive an energy-efficient power control for the uplink of a code division multiple access (CDMA) wireless network over a frequency-selective and slow-fading channel, in which terminals already code-locked to the base station coexist with some terminals still in the code alignment stage. This formulation is obtained through the a...

This paper shows how to tailor a game-theoretic approach to the issue of distributed resource allocation in a CDMA multiple-access wireless network with different quality of service constraints. According to the nature of the terminals (either fixed/vehicular or mobile/battery-powered, in one respect, and either primary or secondary in another), ea...

This work derives a distributed and iterative algorithm by which mobile terminals can selfishly control their transmit powers during the synchronization procedure specified by the IEEE 802.16m and the 3GPP-LTE standards for orthogonal frequency-division multiple-access technologies. The proposed solution aims at maximizing the energy efficiency of...

The purpose of this paper is to provide a novel energy-efficient perspective to the problem of contention-based synchronization in orthogonal frequency-division multiple-access communication systems. This is achieved by modeling the terminals and their corresponding receivers at the base station as economic and rational agents that engage in a nonc...

Start of the above-titled section of the conference proceedings record.

This work aims at providing an energy-efficient perspective to the problem of contention-based synchronization in (orthogonal) frequency-division multiple-access communication systems. This is achieved by modeling the terminals and their corresponding receivers at the base station as economic and rational agents that engage in a noncooperative game...

One of the challenges faced by future networks is to integrate heterogeneous segments whose protocols are optimized for very different conditions. This work provides an overview of project COMPOUND, which tackles problems in this class to interface an underwater acoustic network comprising both static and mobile nodes to the Internet. The main goal...

In this work, we propose a distributed power control algorithm able to capture the tradeoff between detection capabilities and power consumption for a radar sensor network. This is achieved by modeling the radar sensors as rational agents engaging in a noncooperative game in which the detection threshold and the transmit power are properly designed...

This paper introduces a game-theoretic approach to the issue of power allocation for the uplink of a flat-fading code division multiple access (CDMA) wireless communication network, in which terminals already code-locked to the access point coexist with some terminals still in the code acquisition stage. To capture the tradeoff between obtaining go...

A distributed, energy-efficient power control algorithm for the uplink of a CDMA wireless data network over a frequency-selective and slow-fading channel is derived through the application of noncooperative game theory, focusing on the issue of initial code synchronization. To capture the tradeoff between obtaining good synchronization performance...

This paper introduces a game-theoretic formulation for the problem of resource allocation in an infrastructure CDMA wireless communication network, focusing on the issue of initial code synchronization. To capture the tradeoff between obtaining good synchronization performance and saving as much energy as possible, we propose a noncooperative game...

This chapter focuses on the fundamental limits in the accuracy of wireless positioning. Estimation error bounds play a fundamental role in parameter estimation in general, and in positioning in particular, since they serve as useful benchmarks to assess the performance of practical algorithms, techniques, and estimators. In many cases, assuming com...

This chapter focuses on various satellite-based navigation systems. The most well-known and widespread system currently used for localization of a radio-receiving terminal is the global positioning system (GPS). All GPS satellites share the same frequency bands, making use of the code division multiple access (CDMA) technique. The transmitted signa...

This work investigates a fair adaptive resource management criterion (in terms of transmit powers and subchannel assignment) for the uplink of an orthogonal frequency-division multiple access network, populated by mobile users with constraints in terms of target data rates. The inherent optimization problem is tackled with the analytical tools of c...

This paper proposes a game-theoretic approach to the problem of resource allocation for the uplink of a CDMA wireless communication network, in which terminals code-locked to the access point (in-sync users) coexist with some terminals still in the code acquisition stage (out-of-sync users). To capture the tradeoff between obtaining good performanc...

This work investigates a fair adaptive resource management criterion (in terms of transmit powers and subchannel assignment) for the uplink of an orthogonal frequency division multiple access (OFDMA) network, populated by mobile users with constraints in terms of target data rates. The inherent optimization problem is tackled with the analytical to...

This paper proposes an energy-efficient game-theoretic approach to the issue of resource allocation for the uplink of a multicellular OFDMA network. The problem is decoupled into subcarrier assignment and power control, assuming the data rates to be fixed for all subcarriers and all terminals in the network. To capture the tradeoff between obtainin...

The field of satellite navigation has witnessed the advent of a number of new systems and technologies: after the landmark design and development of the Global Positioning System (GPS), a number of new independent Global Navigation Satellite Systems (GNSSs) were or are being developed all over the world: Russia's GLONASS, Europe's GALILEO, and Chin...

This work studies the impact of a specific channel time corre-lation model on the link-level performance of a coded OFDM system that uses iterative channel estimation. When the main focus of extensive simulation campaigns is to measure the overall system performance, it would be desirable to imple-ment low-complexity algorithms that replace the wel...

The purpose of this chapter is to illustrate some possible applications of non-cooperative game theory to the issue of resource allocation in a multi-user CDMA wireless system, as a typical example of a licensed infrastructure network. To this aim, the first part of the chapter revisits some fundamental results of non-cooperative game theory, by me...

This work deals with the issue of channel estimation in the context of non-binary LDPC-coded OFDM systems over doubly selective multipath channels. In particular, we show how to derive an iterative Wiener-filter-based estimation method using both time and frequency channel correlation and considering the particular characteristics of the channel co...

This paper investigates the performance of distributed power control techniques in the uplink of a flat-fading CDMA wireless network, based on noncooperative game theory. Two energy-efficient criteria, tailored for data detection and code synchronization, are compared in terms of achieved utility at the Nash equilibrium, showing that the optimal po...

This work tackles the issue of channel estimation in the context of non-binary-LDPC-coded OFDM systems over doubly-selective multipath channels. The properties of channel encoding are exploited to derive an iterative Wiener-filter-based estimation method using both time and frequency channel correlation. The proposed algorithm can use either soft i...

This paper studies the performance of coherent and noncoherent code alignment detectors in the uplink of a flat-fading CDMA wireless network. A distributed resource allocation scheme in which each pair transmitter-receiver can set its own transmit power and detection threshold is considered to maximize the probability of code detection per consumed...

Non-Binary Low Density Parity Check (NB-LDPC) codes are expected to reduce the performance gap between binary LDPC and Turbo Codes for both short and medium length codewords, retaining in both cases the best of each. This paper presents the performance evaluation of NB-LDPC when compared to state-of-art channel coding techniques, namely Convolution...

In this paper channel estimation techniques are considered as the support methods for OFDM transmission systems based on Non Binary LDPC (Low Density Parity Check) codes. Standard frequency domain pilot aided LS (Least Squares) and LMMSE (Linear Minimum Mean Square Error) estimators are investigated. Furthermore, an iterative algorithm is proposed...

This work investigates the problem of resource allocation (in terms of transmit powers and subchannel assignment) in the uplink channel of an orthogonal frequency division multiple access (OFDMA) network, populated by mobile users with constraints in terms of target transmit data rates. The optimization problem is tackled with the analytical tools...

This paper proposes a game-theoretic approach to the problem of resource allocation for a CDMA wireless communication network, focusing on code synchronization. To capture the tradeoff between obtaining good synchronization performance and saving as much energy as possible, we propose a noncooperative game in which each pair transmitter-receiver in...

This work considers the problem of channel estimation in the context of non-binary-LDPC-coded OFDM transmission over doubly-selective multipath channels. The potential of channel encoding is exploited to derive an iterative Wiener-filter-based estimation method using both time and frequency autocorrelation of the channel. The proposed algorithm can...

Positioning accuracy in satellite navigation systems depends on time-delay estimation (TDE) between satellite transmitted codes and local receiver replicas. This paper explores the fundamental limits of TDE accuracy of spread spectrum signals making use of estimation theory. In particular, this contribution derives some criteria to improve position...

This paper shows how to tailor a game-theoretic approach to the issue of distributed resource allocation in a multiple-access wireless network with different quality of service constraints. According to the nature of the terminals (either fixed/vehicular or mobile/battery-powered, in one respect, and either licensed or unlicensed in another), each...

This paper describes a theoretical framework for the design and analysis of power control algorithms for high-throughput wireless networks using ultrawideband (UWB) technologies. The tools of game theory are shown to be expedient for deriving scalable, energy-efficient, distributed power control schemes to be applied to a population of battery-oper...