Massive mimo techniques for 5g and beyond—opportunities and challenges

D Borges, P Montezuma, R Dinis, M Beko - Electronics, 2021 - mdpi.com
Telecommunications have grown to be a pillar to a functional society and the urge for
reliable and high throughput systems has become the main objective of researchers and …

IRS, LIS, and radio stripes-aided wireless communications: A tutorial

A Gashtasbi, MM da Silva, R Dinis - Applied Sciences, 2022 - mdpi.com
This is a tutorial on current techniques that use a huge number of antennas in intelligent
reflecting surfaces (IRS), large intelligent surfaces (LIS), and radio stripes (RS), highlighting …

DSP-based flexible-waveform and multi-application 5G fiber-wireless system

RM Borges, LAM Pereira… - Journal of Lightwave …, 2019 - ieeexplore.ieee.org
This article reports the implementation and experimental performance investigation of a DSP-
based flexible-waveform fiber-wireless (FiWi) system for 5G enhanced mobile broadband …

On the Performance of LDPC-Coded Large Intelligent Antenna System

A Gashtasbi, MM da Silva, R Dinis, J Guerreiro - Applied Sciences, 2023 - mdpi.com
This article studies Large Intelligent Systems (LIS) along with Single Carrier with Frequency
Domain Equalization (SC-FDE), utilizing Low-Density Parity-Check (LDPC). Four different …

A simplified massive MIMO implemented with pre or post-processing

MM da Silva, R Dinis - Physical Communication, 2017 - Elsevier
This paper considers the use of massive multiple input, multiple output (MIMO) combined
with single-carrier with frequency-domain equalization (SC-FDE) modulations, associated to …

Computationally efficient data detection in massive MIMO wireless systems via semi-iterative method

IA Khoso, X Zhang, IA Khoso… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
Practical data detectors must achieve low error-rate at low-complexity for massive multiple-
input multiple-output (MIMO) wireless systems. Since near-optimal minimum mean square …

On the performance of partial LIS for 6G systems

M Marques da Silva, A Gashtasbi, R Dinis, G Pembele… - Electronics, 2024 - mdpi.com
One of the key technologies of 6G communications relies on large intelligent surfaces (LIS),
which can be viewed as a near-field beamformer that is supportive of extremely high symbol …

Low-complexity SC-FDE techniques for massive MIMO schemes with low-resolution ADCs

J Guerreiro, R Dinis… - IEEE Transactions on …, 2018 - ieeexplore.ieee.org
Massive multiple-input multiple-output (mMIMO) systems are very important for 5G since
they are one of the main enablers of the targeted huge capacity gains. On the other hand …

Equal-gain transmission in massive MIMO systems under Ricean fading

SN Jin, DW Yue, HH Nguyen - IEEE Transactions on Vehicular …, 2018 - ieeexplore.ieee.org
This paper considers a multicell downlink (DL) massive MIMO system operating over Ricean
fading channels in which each base station (BS) is equipped with a massive antenna array …

Low-Complexity Decision Feedback Equalization for Single-Carrier Massive MIMO Systems

X Zhang, L Xing, H Wu, B Ji… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
Decision feedback equalization (DFE) has demonstrated its potential to achieve near-
optimal performance in signal detection within single-carrier massive MIMO systems …