114 citations · 664 across the 92 of their papers we have counts for
10 papers · 1 filter
Fast Optimization with Zeroth-Order Feedback in Distributed, Multi-User MIMO Systems
Olivier Bilenne, Panayotis Mertikopoulos, E. Veronica Belmega
In this paper, we develop a gradient-free optimization methodology for efficient resource allocation in Gaussian MIMO multiple access channels. Our approach combines two main ingre…
Distributed stochastic optimization via matrix exponential learning
Panayotis Mertikopoulos, E. Veronica Belmega, Romain Negrel +1
In this paper, we investigate a distributed learning scheme for a broad class of stochastic optimization problems and games that arise in signal processing and wireless communicati…
Learning to be green: robust energy efficiency maximization in dynamic MIMO-OFDM systems
Panayotis Mertikopoulos, E. Veronica Belmega
In this paper, we examine the maximization of energy efficiency (EE) in next-generation multi-user MIMO-OFDM networks that evolve dynamically over time - e.g. due to user mobility,…
Adaptive Power Allocation and Control in Time-Varying Multi-Carrier MIMO Networks
Ioannis Stiakogiannakis, Panayotis Mertikopoulos, Corinne Touati
In this paper, we examine the fundamental trade-off between radiated power and achieved throughput in wireless multi-carrier, multiple-input and multiple-output (MIMO) systems that…
In an Uncertain World: Distributed Optimization in MIMO Systems with Imperfect Information
Panayotis Mertikopoulos, Aris L. Moustakas
In this paper, we introduce a distributed algorithm that optimizes the Gaussian signal covariance matrices of multi-antenna users transmitting to a common multi-antenna receiver un…
Cost-Efficient Throughput Maximization in Multi-Carrier Cognitive Radio Systems
Salvatore D'Oro, Panayotis Mertikopoulos, Aris L. Moustakas +1
Cognitive radio (CR) systems allow opportunistic, secondary users (SUs) to access portions of the spectrum that are unused by the network's licensed primary users (PUs), provided t…