Fast optimization with zeroth-order feedback in distributed, multi-user MIMO systems

O Bilenne, P Mertikopoulos… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
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 …

Matrix exponential learning: Distributed optimization in MIMO systems

P Mertikopoulos, EV Belmega… - 2012 IEEE International …, 2012 - ieeexplore.ieee.org
We analyze the problem of finding the optimal signal covariance matrix for multiple-input
multiple-output (MIMO) multiple access channels by using an approach based on” ex …

Learning in an uncertain world: MIMO covariance matrix optimization with imperfect feedback

P Mertikopoulos, AL Moustakas - IEEE Transactions on Signal …, 2015 - ieeexplore.ieee.org
In this paper, we present a distributed learning algorithm for the optimization of signal
covariance matrices in Gaussian multiple-input and multiple-output (MIMO) multiple access …

Distributed optimization in multi-user MIMO systems with imperfect and delayed information

P Coucheney, B Gaujal… - 2014 IEEE International …, 2014 - ieeexplore.ieee.org
In this paper, we analyze the problem of signal covariance optimization in Gaussian multiple-
input, multiple-output (MIMO) channels under imperfect (and possibly delayed) channel …

Adaptive power allocation and control in time-varying multi-carrier MIMO networks

I Stiakogiannakis, P Mertikopoulos, C Touati - arXiv preprint arXiv …, 2015 - arxiv.org
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 …

Zero-forcing methods for downlink spatial multiplexing in multiuser MIMO channels

QH Spencer, AL Swindlehurst… - IEEE transactions on …, 2004 - ieeexplore.ieee.org
The use of space-division multiple access (SDMA) in the downlink of a multiuser multiple-
input, multiple-output (MIMO) wireless communications network can provide a substantial …

Network MIMO with linear zero-forcing beamforming: Large system analysis, impact of channel estimation, and reduced-complexity scheduling

H Huh, AM Tulino, G Caire - IEEE Transactions on Information …, 2011 - ieeexplore.ieee.org
We consider the downlink of a multicell system with multiantenna base stations and single-
antenna user terminals, arbitrary base station cooperation clusters, distance-dependent …

SLINR-based downlink optimization in MU-MIMO networks

T Gamvrelis, Z Li, AA Khan, RS Adve - IEEE Access, 2022 - ieeexplore.ieee.org
Optimizing the downlink of multi-cell multiuser multiple input multiple output (MU-MIMO)
networks has received substantial attention; however, the schemes in the literature consider …

Joint optimization of power and data transfer in multiuser MIMO systems

J Rubio, A Pascual-Iserte, DP Palomar… - IEEE Transactions on …, 2016 - ieeexplore.ieee.org
We present an approach to solve the nonconvex optimization problem that arises when
designing the transmit covariance matrices in multiuser multiple-input multiple-output …

Sum-rate maximization in distributed-antenna heterogeneous MIMO downlinks: Application to measured channels

AL Anderson, MA Jensen - IEEE Journal of Selected Topics in …, 2012 - ieeexplore.ieee.org
In a distributed antenna multiple-input multiple-output (MIMO) multiuser channel, multiple
nodes simultaneously access the wireless channel by cooperating to achieve virtual MIMO …