This work develops power control algorithms for energy efficiency (EE) maximization (measured in bit/Joule) 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 allows one to encompass some of most promising 5G candidate technologies. Both network-centric user-centric EE maximizations considered. In scenario, global minimum network performed. contributions, we develop...

The aim of this tutorial is to provide an overview, although necessarily incomplete, game theory (GT) for signal processing (SP) in networks. One the main features contribution gather a single article some fundamental game-theoretic notions and tools that, over past few years, have become widespread SP literature. In particular, both strategic-form coalition-form games are described detail, key connections differences between them outlined. Moreover, particular attention also devoted...

Carbon Capture and Storage (CCS) is recognised as one of the most effective technologies for reducing CO2 emissions in short to medium term. From a capacity point view, deep saline aquifers offer greatest potential. As supercritical injected aquifer, variety strongly coupled physical chemical processes occur. Among these various mechanisms, vaporisation water requires particular attention it can cause salt precipitation, which reduces porosity permeability reservoir vicinity wellbore. This...

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) network are modeled as rational agents that engage non-cooperative game where each UE allocates its available transmit over set assigned subcarriers so to maximize individual utility (defined user's throughput per Watt power) subject minimum-rate constraints. In this...

We present the NEFOCAST project (named by contraction of “Nefele”, which is Italian spelling for mythological cloud nymph Nephele, and “forecast”), funded Tuscany Region, about feasibility a system detection monitoring precipitation fields over regional territory based on use widespread network new-generation Eutelsat “SmartLNB” (smart low-noise block converter) domestic terminals. Though primarily intended interactive satellite services, these devices can also be used as weather sensors,...

Vaporisation of water during dry CO2 injection can cause salt precipitation and lead to significant reduction in injectivity. Research described this paper aimed at improving the understanding halite scaling process through experimental numerical investigations. Experimental results indicated porosity reductions about 3 - 5% permeability between 13 75%. Numerical simulation have shown that a impact on field operations. They also suggested that, occur caprock interface increasing sealing...

Pore pressure variation resulting from geological CO2 storage may compromise reservoir, caprock and fault integrity. Therefore, we investigate the mechanical impact of industrial-scale at a prospective Danish site by coupled 3D hydro-mechanical simulations carried out two independent modelling groups. Even though chosen strategies are not identical, simulation results demonstrate that integrity is maintained any time. Vertical displacements mainly determined hydraulic conductivity...

In this paper, we investigate the power control problem in a cooperative network with multiple wireless transmitters, amplify-and-forward relays, and one destination. The relay communication can be either full duplex or half-duplex, all source nodes interfere each other at every intermediate node, active (transmitters nodes) base station. A game-theory-based algorithm is devised to allocate powers among nodes. aim maximizing their energy efficiency (in bits per Joule Hertz), whereas relays...

Modern MIMO communication systems are almost exclusively designed assuming locally plane wavefronts over antenna arrays. This is known as the far-field approximation and soundly justified at sub-6-GHz frequencies most relevant transmission ranges. However, when higher shorter ranges used, wave curvature array no longer negligible, arrays operate in so-called radiative near-field region. letter aims to show that classical may significantly underestimate achievable spectral efficiency of...

In this lecture note, we introduce the basic concepts of game theory (GT), a branch mathematics traditionally studied and applied in areas economics, political science, biology, which has emerged last fifteen years as an effective framework for communications, networking, signal processing (SP). The real catalyzer been blooming all issues related to distributed networks, nodes can be modeled players competing system resources. Some relevant notions GT are introduced by elaborating on simple...

In this paper, a game-theoretic model for studying power control wireless data networks in frequency-selective multipath environments is analyzed. The uplink of an impulse-radio ultrawideband system considered. effects self-interference and multiple-access interference on the performance generic Rake receivers are investigated synchronous systems. Focusing energy efficiency, noncooperative game proposed which users network allowed to choose their transmit powers maximize own utilities, Nash...

This work deals with the power allocation problem in a multipoint-to-multipoint network, which is heterogenous sense that each transmit and receiver pair can arbitrarily choose whether to selfishly maximize its own rate or energy efficiency. achieved by modeling pairs as rational players engage non-cooperative game utility function changes according player's nature. The underlying reformulated quasi variational inequality (QVI) using convex fractional program theory. equivalence between QVI...

Effective integration of terrestrial and non-terrestrial segments is one the key research avenues in design current future wireless communication networks. To this aim, modern communication-satellite constellations intend to attain sufficiently high throughput terms bit rate per unit area on ground by rather aggressive patterns spatial frequency reuse. This goal calls for on-board narrow-beam antennas, whose size turns out be many cases incompatible with size/mass accommodation constraints...

The field of satellite navigation has witnessed the advent a number new systems and technologies: after landmark design development Global Positioning System (GPS), independent Navigation Satellite Systems (GNSSs) were or are being developed all over world: Russia's GLONASS, Europe's GALILEO, China's BEIDOU-2, to mention few. In this ever-changing context, availability reliable flexible receivers is becoming priority for host applications, including research, commercial, civil, military....

In this work, we propose a distributed power control algorithm able to capture the tradeoff between detection capabilities and consumption for radar sensor network. This is achieved by modeling sensors as rational agents engaging in noncooperative game which threshold transmit are properly designed according Nash equilibrium solution. An iterative based on best-response dynamics proposed achieve point its performance compared that uniform allocation.

The purpose of this paper is to provide a novel energy-efficient perspective the problem contention-based synchronization in orthogonal frequency-division multiple-access communication systems. This achieved by modeling terminals and their corresponding receivers at base station as economic rational agents that engage noncooperative game. In proposed game, each one trades off its available resources (transmit power detection strategy) so selfishly maximize own revenue (in terms probability...

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 noncooperative game, under minimum-rate constraints. theoretical analysis of game equilibrium used to compare performance two different architectures. Extensive simulations show relay...

Accurate measurement and monitoring of precipitation is crucial for many applications, such as flood drought risk assessment management. Conventional meteorological devices estimating (i.e., rain gauges, disdrometers, active passive remote sensors, be they ground-based, spaceborne, or airborne) have their own strengths weaknesses. The latter are often related to time space resolution, coverage, cost. In the last two decades, several studies been carried out exploit opportunistic signals...

Massive multiple-input multiple-output (mMIMO) is emerging as a cornerstone technology for fifth-generation (5G) communications. It promises to scale up the performance of conventional communication systems by growing number antennas at base station side. This paper proposes decentralized, scalable, and energy-efficient radio resource allocation method tailored uplink upcoming 5G air interface, based on mMIMO physical layer. The proposed solution elaborates game-theoretical approach, which...

Positioning accuracy in satellite navigation systems depends on time-delay estimation (TDE) between transmitted codes and local receiver replicas. This paper explores the fundamental limits of TDE spread spectrum signals making use theory. In particular, this contribution derives some criteria to improve positioning additive white Gaussian noise (multipath-free) scenario, focusing (satellite) transmitter side a direct sequence (DS-SS) system. Three different solutions based minimization...