67 citations · 334 across the 53 of their papers we have counts for
11 papers · 1 filter
Accelerated Randomized Methods for Receiver Design in Extra-Large Scale MIMO Arrays
Victor Croisfelt Rodrigues, Abolfazl Amiri, Taufik Abrão +2
Massive multiple-input-multiple-output (M-MIMO) features a capability for spatial multiplexing of large number of users. This number becomes even more extreme in extra-large (XL-MI…
XL-MIMO Energy-Efficient Antenna Selection under Non-Stationary Channels
Gabriel Avanzi Ubiali, Taufik Abrão
Massive multiple-input-multiple-output (M-MIMO) is a key technology for 5G networks. Within this research area, new types of deployment are arising, such as the extremely-large reg…
Stochastic Channel Models for Massive and XL-MIMO Systems
Lígia May Taniguchi, Taufik Abrão
In this paper, stochastic channel models for massive MIMO (M-MIMO) and extreme large MIMO (XL- MIMO) system applications are described, evaluated and systematically compared. This…
A Grant-based Random Access Protocol in Extra-Large Massive MIMO System
Otávio Seidi Nishimura, José Carlos Marinello Filho, Taufik Abrão
Extra-large massive multiple-input multiple-output (XL-MIMO) systems is a new concept, where spatial non-stationarities allow activate a high number of user equipments (UEs). This…
Antenna Selection for Improving Energy Efficiency in XL-MIMO Systems
José Carlos Marinello, Taufik Abrão, Abolfazl Amiri +2
We consider the recently proposed extra-large scale massive multiple-input multiple-output (XL-MIMO) systems, with some hundreds of antennas serving a smaller number of users. Sinc…
Direction-of-Arrival Estimation Methods: A Performance-Complexity Tradeoff Perspective
Edno Gentilho, Paulo Rogério Scalassara, Taufik Abrão
This work analyses the performance-complexity tradeoff for different direction of arrival (DoA) estimation techniques. Such tradeoff is investigated taking into account uniform lin…
Heuristic Chaotic Hurricane-aided Efficient Power Assignment for Elastic Optical Networks
Layhon R. dos Santos, Taufik Abrão
In this paper we propose a dynamical transmission power allocation for elastic optical networks (EONs) based on the evolutionary hurricane search optimization (HSO) algorithm with…
Low-Complexity Distributed XL-MIMO for Multiuser Detection
Victor Croisfelt Rodrigues, Abolfazl Amiri, Taufik Abrão +2
In this paper, the zero-forcing and regularized zero-forcing schemes operating in crowded extra-large MIMO (XL-MIMO) scenarios with a fixed number of subarrays have been emulated u…
NOMA Systems Optimization to Ensure Maximum Fairness to Users
Jaime Laelson Jacob, Taufik Abrao
In this contribution, the optimization of power proportion allocated for each user in the downlink (DL) non-orthogonal multiple access (NOMA) systems have been developed. Successiv…
Achieving Fair Random Access Performance in Massive MIMO Crowded Machine-Type Networks
José Carlos Marinello, Taufik Abrão, Richard Demo Souza +2
The use of massive multiple-input multiple-output (MIMO) to serve a crowd of user equipments (UEs) is challenged by the deficit of pilots. Assuming that the UEs are intermittently…
Closed-Form Bit Error Probabilities for FBMC Systems
Ricardo Tadashi Kobayashi, Taufik Abrao
This paper analyses the data reconstruction effects emerged from the deployment of non-perfect prototype filters in Filter Bank MultiCarrier (FBMC) systems operating over Additive…