Power-ordered NOMA with massive MIMO for 5G systems

M Marques da Silva, R Dinis - Applied Sciences, 2021 - mdpi.com
The aim of this article is to study the conventional and cooperative power-order Non-
Orthogonal Multiple Access (NOMA) using the Single Carrier with Frequency Domain …

A low complexity channel estimation and detection for massive MIMO using SC-FDE

M Marques da Silva, R Dinis, J Guerreiro - Telecom, 2020 - mdpi.com
5G Communications will support millimeter waves (mm-Wave), alongside the conventional
centimeter waves, which will enable much higher throughputs and facilitate the employment …

On the Performance of LDPC-Coded MIMO Schemes for Underwater Communications Using 5G-like Processing

M Marques da Silva, R Dinis, J Aleixo, LML Oliveira - Applied Sciences, 2022 - mdpi.com
This article studies the underwater acoustic (UWA) communications associated with multiple
input–multiple output (MIMO), single carrier with frequency-domain equalization (SC-FDE) …

Performance analysis of a SAGE-based semi-blind channel estimator for pilot contaminated MU massive MIMO systems

K Mawatwal, D Sen, R Roy - IEEE Access, 2020 - ieeexplore.ieee.org
Massive multiple-input multiple-output (M-MIMO) is one of the key ingredients in the
upcoming 5G technology. The benefits associated with M-MIMO rely largely on the accuracy …

Precoded generalized spatial modulation for downlink MIMO transmissions in beyond 5G networks

JP Pavia, V Velez, B Brogueira, N Souto, A Correia - Applied Sciences, 2020 - mdpi.com
The design of multiple input multiple output (MIMO) schemes capable of achieving both high
spectral and energy efficiency constitutes a challenge for next-generation wireless networks …

[PDF][PDF] Energy-Efficient and Spectrally-Efficient MIMO

MM Silva, R Dinis, J Guerreiro - 2019 - repositorio.ual.pt
While enabling energy efficiency and spectral efficiency, MIMO systems tends to be
associated to an exponential increase of complexity and of signal processing, with the …

Channel estimation using in-band pilots for uplink massive mimo

CT Lam, B Ng, K Wang, E Law - 2021 IEEE 21st International …, 2021 - ieeexplore.ieee.org
In this paper, we extend the channel estimation technique using in-band pilots (IBP) for
uplink DFT-Precoded OFDM single input single output (SISO) to massive multiple input …

On the Performance of LDPC Codes over Radio Stripes System

A Gashtasbi, MM Da Silva… - 2023 Photonics & …, 2023 - ieeexplore.ieee.org
In the scope of beyond 5G and the forthcoming 6G, Radio Stripes (RS) have been proposed
as a potential technique to enhance communications quality for new users. In this paper, we …

[PDF][PDF] Estimação de canal para comunicações subaquáticas utilizando MIMO Massivo

SMZ Tiago - 2023 - repositorio.ual.pt
RESUMO O propósito desta dissertação de mestrado é demonstrar como a inserção das
variáveis de ruído impulsivo e estimação de canal, afetam os sistemas de comunicações …

[PDF][PDF] On the LIS System Performance with and without Equalization

M Marques da Silva - Progress in Electromagnetics Research …, 2023 - repositorio.ual.pt
In the scope of beyond 5G and the forthcoming 6G, Radio Stripes (RS) have been proposed
as a potential technique to enhance communications quality for new users. In this paper, we …