34 citations · 108 across the 18 of their papers we have counts for
8 papers · 1 filter
Energy-Efficient Active Element Selection in RIS-aided Massive MIMO Systems
Wilson Souza, José Carlos Marinello, Taufik Abrão
This chapter delves into the critical aspects of optimizing energy efficiency (EE) in active reconfigurable intelligent surface (RIS)-assisted massive MIMO (M-MIMO) wireless commun…
Reconfigurable Intelligent Surfaces-Enabled Intra-Cell Pilot Reuse in Massive MIMO Systems
Jose Carlos Marinello Filho, Taufik Abrao, Ekram Hossain +1
Channel state information (CSI) estimation is a critical issue in the design of modern massive multiple-input multiple-output (mMIMO) networks. With the increasing number of users,…
Improving Spectral Efficiency via Pilot Assignment and Subarray Selection Under Realistic XL-MIMO Channels
Gabriel Avanzi Ubiali, Taufik Abrao, Jose Carlos Marinello
The main requirements for 5G and beyond connectivity include a uniform high quality of service, which can be attained in crowded scenarios by extra-large MIMO (XL-MIMO) systems. An…
Reconfigurable Intelligent Surfaces to Enable Energy-Efficient IoT Networks
João Henrique Inacio de Souza, José Carlos Marinello Filho, Taufik Abrão +1
In this article, we study the uplink (UL) channel of a cellular network of Internet of Things (IoT) devices assisted by a reconfigurable intelligent surface (RIS) with a limited nu…
Energy Efficiency and Throughput of Random Access Protocols for RIS-Aided IoT Networks
João Henrique Inacio de Souza, José Carlos Marinello Filho, Taufik Abrão +1
Green Internet of Things (IoT) aims to enable a sustainable smart world by making energy efficiency (EE) the main performance indicator for IoT hardware and software. With respect…
QoS-Aware User Scheduling in Crowded XL-MIMO Systems Under Non-Stationary Multi-State LoS/NLoS Channels
Joao Henrique Inacio de Souza, Jose Carlos Marinello, Abolfazl Amiri +1
Providing minimum quality-of-service (QoS) in crowded wireless communications systems, with high user density, is challenging due to the network structure with limited transmit pow…
User-Centric Perspective in Random Access Cell-Free Aided by Spatial Separability
Victor Croisfelt, Taufik Abrão, José Carlos Marinello
In a cell-free massive multiple-input multiple-output (CF-mMIMO) network, multiple access points (APs) actively cooperate to serve users' equipment (UEs). We consider how the rando…
Pilot Distribution Optimization and Power Control in Multi-Cellular Large Scale MIMO Systems
Jose Carlos Marinello, Taufik Abrao
Massive MIMO communication systems have been identified as one of the most prominent technologies of the next generation wireless standards, such as 5G, due to the large gains in e…