Toward an efficient C-RAN optical fronthaul for the future networks: A tutorial on technologies, requirements, challenges, and solutions

IA Alimi, AL Teixeira, PP Monteiro - … Communications Surveys & …, 2017 - ieeexplore.ieee.org
The exponential traffic growth, demand for high speed wireless data communications, as
well as incessant deployment of innovative wireless technologies, services, and …

Coherent free-space optical communications: Opportunities and challenges

FP Guiomar, MA Fernandes, JL Nascimento… - Journal of Lightwave …, 2022 - opg.optica.org
The ever-increasing data rate demand for wireless systems is pushing the physical limits of
standalone radio-frequency communications, thus fostering the blooming of novel high …

Towards enhanced mobile broadband communications: A tutorial on enabling technologies, design considerations, and prospects of 5G and beyond fixed wireless …

IA Alimi, RK Patel, NJ Muga, AN Pinto, AL Teixeira… - Applied Sciences, 2021 - mdpi.com
There has been a growing interconnection across the world owing to various multimedia
applications and services. Fixed wireless access (FWA) is an attractive wireless solution for …

Adaptive probabilistic shaped modulation for high-capacity free-space optical links

FP Guiomar, A Lorences-Riesgo, D Ranzal… - Journal of Lightwave …, 2020 - opg.optica.org
Infrared free-space optics (FSO) provide an attractive solution for ultra-high-capacity
wireless communications. However, the full potential of FSO is still being hindered by the …

Multiple scattering in rain and fog on free-space optical links

M Grabner, V Kvicera - Journal of lightwave technology, 2013 - ieeexplore.ieee.org
The multiple scattering effects of light propagation in rain and fog are investigated by means
of numerical Monte Carlo photon propagation simulations. Rain and fog consisting of water …

Transparent fiber–millimeter-wave–fiber system in 100-GHz band using optical modulator and photonic down-conversion

PT Dat, Y Yamaguchi, M Motoya… - Journal of Lightwave …, 2022 - ieeexplore.ieee.org
We demonstrate the first fiber–millimeter-wave–fiber system in the 100-GHz band using a
low-loss optical modulator and direct photonic down-conversion technology. The utilization …

High-speed MDM-Ro-FSO system by incorporating spiral-phased Hermite Gaussian modes

S Chaudhary, A Amphawan - Photonic Network Communications, 2018 - Springer
In the wake of growing challenges of dispersing communication services in rural areas,
Radio over Free Space (Ro-FSO) is a useful technology that can carry heterogeneous …

Cost-efficient hybrid WDM-MDM-Ro-FSO system for broadband services in hospitals

P Liang, C Zhang, J Nebhen, S Chaudhary… - Frontiers in …, 2021 - frontiersin.org
The expansion of high-speed communication needs due to explosive growth of subscribers
each year has led the researchers to design the next generation communication systems …

Adaptive optical beam alignment and link protection switching for 5G-over-FSO

MA Fernandes, BT Brandão, P Georgieva… - Optics …, 2021 - opg.optica.org
Free-space optics (FSO) convey an enormous potential for ultra-high-capacity seamless
fiber-wireless transmission in 5G and beyond communication systems. However, for its …

Single-wavelength terabit FSO channel for datacenter interconnects enabled by adaptive PCS

MA Fernandes, PP Monteiro… - 2021 Optical fiber …, 2021 - ieeexplore.ieee.org
Using coherent optics we demonstrate a seamless fiber-FSO link for DCIs supporting up to 1
Tbps. PCS-based bit-rate adaptation and automatic beam alignment effectively counteract …