34 citations · 108 across the 18 of their papers we have counts for
19 papers
The ISAC systems aided by MIMO, RIS and with Beamforming Techniques
Rafael Augusto Pedriali, Isadora Martines Ferreira, Jose Carlos Marinello +1
This paper explores the integration of communication and sensing in modern wireless systems through the configuration of BS and RIS antenna elements. By leveraging time multiplexin…
Manifold-Based Optimizations for RIS-Aided Massive MIMO Systems
Wilson de Souza Junior, David William Marques Guerra, José Carlos Marinello +2
Manifold optimization (MO) is a powerful mathematical framework that can be applied to optimize functions over complex geometric structures, which is particularly useful in advance…
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…
LSTM-ACB-Based Random Access for Mixed Traffic IoT Networks
Herman L. dos Santos, João H. I. Souza, José Carlos Marinello +1
We propose a novel random access (RA) protocol that accounts for the network traffic in mixed URLLC-mMTC scenarios. By considering an IoT environment under high mMTC traffic demand…
LSTM-ACB-Based RA for IoT Mixed Traffic
Herman L. dos Santos, José Carlos Marinello, Cristiano Magalhaes Panazio +1
A novel random access (RA) scheme for mixed URLLC-mMTC traffic scenario is proposed using realistic statistical models, with the use mode presenting long-term traffic regularity. T…
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…
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…
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…
Total Energy Efficiency of TD- and FD-MRC Receivers for Massive MIMO Uplink
Jose Carlos Marinello, Cristiano Panazio, Taufik Abrao +1
This paper proposes a detailed investigation on the uplink (UL) performance of massive multiple-input-multiple-output (maMIMO) systems employing maximum-ratio combining at the rece…
Sequential likelihood ascent search detector for massive MIMO systems
Giovanni Maciel Ferreira Silva, Jose Carlos Marinello Filho, Taufik Abrao
In this paper, we have analyzed the performance-complexity tradeoff of {a selective} likelihood ascent search (LAS) algorithm initialized by a linear detector, such as matched filt…
Massive MIMO Pilot Assignment Optimization based on Total Capacity
Jose Carlos Marinello, Cristiano Magalhaes Panazio, Taufik Abrao
We investigate the effects of pilot assignment in multi-cell massive multiple-input multiple-output systems. When deploying a large number of antennas at base station (BS), and lin…
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…
BER Analysis of Multi-Cellular MIMO Systems with Increasing Number of BS Antennas
José Carlos Marinello, Taufik Abrão
In this work, salient characteristics of a wireless communication system deploying a great number of antennas in the base station (BS), namely Massive MIMO system, are investigated…