5G frequency standardization, technologies, channel models, and network deployment: Advances, challenges, and future directions

YO Imam-Fulani, N Faruk, OA Sowande, A Abdulkarim… - Sustainability, 2023 - mdpi.com
The rapid increase in data traffic caused by the proliferation of smart devices has spurred the
demand for extremely large-capacity wireless networks. Thus, faster data transmission rates …

Hybrid beamforming designs for massive MIMO millimeter-wave heterogeneous systems

D Castanheira, P Lopes, A Silva, A Gameiro - IEEE Access, 2017 - ieeexplore.ieee.org
Network densification through the deployment of small cells along the coverage area of a
macro-cell, employing massive multiple input multiple output (MIMO) and millimeter-wave …

Hybrid multi-user equalizer for massive MIMO millimeter-wave dynamic subconnected architecture

R Magueta, D Castanheira, A Silva, R Dinis… - IEEE …, 2019 - ieeexplore.ieee.org
This paper proposes a hybrid multi-user equalizer for the uplink of broadband millimeter-
wave massive multiple input/multiple output (MIMO) systems with dynamic subarray …

Hybrid iterative space-time equalization for multi-user mmW massive MIMO systems

R Magueta, D Castanheira, A Silva… - IEEE Transactions …, 2016 - ieeexplore.ieee.org
The combination of millimeter wave (mmW) with massive MIMO is a promising approach to
achieve the multi Gb/s required by future wireless systems. Fully digital architectures are not …

[PDF][PDF] An Optimized Algorithm for Resource Allocation for D2D in Heterogeneous Networks.

AK Hamid, FN Al-Wesabi, N Nemri… - … , Materials & Continua, 2022 - cdn.techscience.cn
With the emergence of 5G mobile multimedia services, end users' demand for high-speed,
low-latency mobile communication network access is increasing. Among them, the device-to …

Secure performance analysis of aerial RIS-NOMA-aided systems: Deep neural network approach

HP Dang, MS Van Nguyen, DT Do, MH Nguyen… - Electronics, 2022 - mdpi.com
The next generation of wireless systems has benefits in terms of spectrum and energy
inefficiencies by exploiting two promising techniques including Non-Orthogonal Multiple …

Iterative analog–digital multi-user equalizer for wideband millimeter wave massive MIMO systems

R Magueta, D Castanheira, P Pedrosa, A Silva, R Dinis… - Sensors, 2020 - mdpi.com
Most of the previous work on hybrid transmit and receive beamforming focused on
narrowband channels. Because the millimeter wave channels are expected to be wideband …

Multiple transmit antennas for low PAPR spatial modulation in SC-FDMA: single vs. multiple streams

D Sinanović, G Šišul, AS Kurdija, Ž Ilić - EURASIP journal on wireless …, 2020 - Springer
The main reason for the selection of single-carrier frequency division multiple access (SC-
FDMA) modulation technique in mobile high data rate communications lays in its low value …

[PDF][PDF] Spark spectrum allocation for D2D communication in cellular networks

T Ahmad, I Khan, A Irshad, S Ahmad… - … , Materials & Continua, 2022 - academia.edu
The device-to-device (D2D) technology performs explicit communication between the
terminal and the base station (BS) terminal, so there is no need to transmit data through the …

[PDF][PDF] An Efficient Machine Learning Based Precoding Algorithm for Millimeter-Wave Massive MIMO.

W Shahjehan, A Ullah, SW Shah, AA Aly… - … Materials & Continua, 2022 - cdn.techscience.cn
Millimeter wave communication works in the 30–300 GHz frequency range, and can obtain a
very high bandwidth, which greatly improves the transmission rate of the communication …