Non exhaustive methodologies for characterizing equilibria in wireless games terms of existence, uniqueness, selection, and efficiency are provided. The paper will focus on technical problems arising at the physical medium access layers a network, not economic aspects related to it, like auction problem spectrum, even though it is also an important scenario where game theory used.

We describe a non-cooperative interference alignment (IA) technique which allows an opportunistic multiple input output (MIMO) link (secondary) to harmlessly coexist with another MIMO (primary) in the same frequency band. Assuming perfect channel knowledge at primary receiver and transmitter, capacity is achieved by transmiting along spatial directions (SD) associated singular values of its matrix using water-filling power allocation (PA) scheme. Often, limitations lead transmitter leave...

In this paper, the capacity-achieving input covariance matrices for coherent block-fading correlated multiple output (MIMO) Rician channels are determined. contrast with Rayleigh and uncorrelated cases, no closed-form expressions eigenvectors of optimum matrix available. Classically, both eigenvalues computed numerically corresponding optimization algorithms remain computationally very demanding. asymptotic regime where number transmit receive antennas converge to infinity at same rate, new...

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...

The problem of energy-efficient precoding is investigated when the terminals in system are equipped with multiple antennas. Considering static and fast-fading multiple-input multiple-output (MIMO) channels, energy-efficiency defined as transmission rate to power ratio shown be maximized at low transmit power. most interesting case one slow fading MIMO channels. For this type optimal scheme generally not trivial. Furthermore, using all available always sense (which, case, corresponds...

In this work, we introduce hierarchy in wireless networks that can be modeled by a decentralized multiple access channel and for which energy-efficiency is the main performance index. these users are free to choose their power control strategy selfishly maximize energy-efficiency. Specifically, two different ways: 1. Assuming single-user decoding at receiver, investigate Stackelberg formulation of game where one user leader whereas other assumed able react leader's decisions; 2. neither nor...

A key assumption made in this paper is that electric vehicle (EV) battery charging profiles are rectangular. This requires a specific and new formulation of the problem, involving discrete action sets for EVs particular. The considered cost function comprises three components: 1) distribution transformer aging; 2) energy losses; 3) component inherent to EV itself (e.g., monetary cost). Charging start times determined by proposed distributed algorithm, whose analysis conducted using...

A game theoretic approach is used to derive the optimal decentralized power allocation (PA) in fast fading multiple access channels where transmitters and receiver are equipped with antennas.The players (the mobile terminals) free choose their PA order maximize individual transmission rates (in particular they can ignore some specified centralized policies).A simple coordination mechanism between users introduced.The nature influence of this studied detail.The signal indicates which applies...

Internet of Things (IoT) devices will play an important role in emerging applications, since their sensing, actuation, processing, and wireless communication capabilities stimulate data collection, transmission decision processes smart applications. However, new challenges arise from the widespread popularity IoT devices, including need for processing more complicated structures high dimensional data/signals. The unprecedented volume, heterogeneity, velocity calls a paradigm shift search...

This paper investigates the problem of coordinating several agents through their actions, focusing on an asymmetric observation structure with two agents. Specifically, one agent knows past, present, and future realizations a state that affects common payoff function, while other either past nothing about state. In both cases, second is assumed to have strictly causal observations first agent's which enables coordinate. These scenarios are applied distributed power control; key idea...

In this paper, the situation in which a receiver has to execute task from quantized version of information source interest is considered. The modeled by minimization problem general goal function <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$f(x;g)$ </tex-math></inline-formula> for decision notation="LaTeX">$x$ be taken parameters notation="LaTeX">$g$ . This relevant many applications, e.g., radio...

This work tackles the problem of energy-efficient distributed power control in wireless networks with a large number transmitters. The is modeled by dynamic game. Each transmitter-receiver communication characterized state given available energy and/or individual channel and whose evolution governed certain dynamics. Since equilibrium analysis such (stochastic) game generally difficult even impossible, approximated exploiting system assumption. Under an appropriate exchangeability...

Wireless communications is nowadays an important aspect of robotics. There are many applications in which a robot must move to certain goal point while transmitting information through wireless channel depends on the particular trajectory chosen by reach point. In this context, we develop method generate optimum trajectories allow using little mechanical energy as much data possible. This done optimizing (path and velocity profile) so that consumes less also offering good conditions....

In this paper, we review the literature on physical layer energy-efficient communications. The most relevant and recent works are mainly centered around two frameworks: pragmatic information theoretical approaches. Both of them aim at finding best transmit and/or receive policies which maximize number bits that can be reliably conveyed over channel per unit energy consumed. Taking into account both approaches, analysis starts with single user SISO (single-input single-output) channel, is...

Various measures have been taken in different countries to mitigate the Covid-19 epidemic. But, throughout world, many citizens don't understand well how these are and even question decisions by their government. Should be more (or less) restrictive? Are they for a too long short) period of time? To provide some quantitative elements response questions, we consider well-known SEIR model epidemic propagation propose pragmatic government decision-making operation. Although simple obviously...

We address the problem of spectrum sharing where competitive operators coexist in same frequency band. First, we model this as a strategic non-cooperative game simultaneously share according to Nash Equilibrium (NE). Given set channel realizations, several equilibria exist which renders outcome unpredictable. Then, cognitive context with presence primary and secondary operators, inter-operator is reformulated Stackelberg using hierarchy operator leader. The (SE) reached best response taken...

In this paper, we address the problem of spectrum sharing where competitive operators coexist in same frequency band. First, model as a strategic non-cooperative game simultaneously share according to Nash Equilibrium (N.E). Given set channel realizations, several equilibria exist which renders outcome unpredictable. For reason, is reformulated Stackelberg first operator already being deployed and secondary follows next. The equilibrium (S.E) reached best response taken into account upon...