29 citations · 55 across the 9 of their papers we have counts for
10 papers
Strong Duality in Nonconvex Quadratic Problems with Separable Quadratic Constraints
Javier Zazo, Santiago Zazo
We study nonconvex quadratic problems (QPs) with quadratic separable constraints, where these constraints can be defined both as inequalities or equalities. We derive sufficient co…
Learning Parametric Closed-Loop Policies for Markov Potential Games
Sergio Valcarcel Macua, Javier Zazo, Santiago Zazo
Multiagent systems where agents interact among themselves and with a stochastic environment can be formalized as stochastic games. We study a subclass named Markov potential games…
Diff-DAC: Distributed Actor-Critic for Average Multitask Deep Reinforcement Learning
Sergio Valcarcel Macua, Aleksi Tukiainen, Daniel García-Ocaña Hernández +3
We propose a fully distributed actor-critic algorithm approximated by deep neural networks, named \textit{Diff-DAC}, with application to single-task and to average multitask reinfo…
Investigation on Radio Wave Propagation in Shallow Seawater: Simulations and Measurements
Eugenio Jimenez, Gara Quintana, Pablo Mena +5
The authors present full wave simulations and experimental results of propagation of electromagnetic waves in shallow seawaters. Transmitter and receiver antennas are ten-turns loo…
Cooperative Network Node Positioning Techniques Using Underwater Radio Communications
Javier Zazo, Santiago Zazo, Sergio Valcarcel Macua +4
We analyze the problem of localization algorithms for underwater sensor networks. We first characterize the underwater channel for radio communications and adjust a linear model wi…
Simulation of Underwater RF Wireless Sensor Networks using Castalia
Sergio Valcarcel Macua, Santiago Zazo, Javier Zazo +4
We use real measurements of the underwater channel to simulate a whole underwater RF wireless sensor networks, including propagation impairments (e.g., noise, interference), radio…
Dynamic Potential Games in Communications: Fundamentals and Applications
Santiago Zazo, Sergio Valcarcel Macua, Matilde Sánchez-Fernández +1
In a noncooperative dynamic game, multiple agents operating in a changing environment aim to optimize their utilities over an infinite time horizon. Time-varying environments allow…
Distributed Policy Evaluation Under Multiple Behavior Strategies
Sergio Valcarcel Macua, Jianshu Chen, Santiago Zazo +1
We apply diffusion strategies to develop a fully-distributed cooperative reinforcement learning algorithm in which agents in a network communicate only with their immediate neighbo…
Belief Consensus Algorithms for Fast Distributed Target Tracking in Wireless Sensor Networks
Vladimir Savic, Henk Wymeersch, Santiago Zazo
In distributed target tracking for wireless sensor networks, agreement on the target state can be achieved by the construction and maintenance of a communication path, in order to…
Location-aided Distributed Primary User Identification in a Cognitive Radio Scenario
Pavle Belanovic, Sergio Valcarcel Macua, Santiago Zazo
We address a cognitive radio scenario, where a number of secondary users performs identification of which primary user, if any, is transmitting, in a distributed way and using limi…