Results 71 to 80 of about 7,278,007 (216)

Turbulence‐Resilient Coherent Receiver Array on CMOS‐Compatible Silicon Photonics for Free Space Optical Communications

Nanophotonics, Volume 15, Issue 5, 16 March 2026.
A CMOS‐compatible silicon‐photonic 4 × 4 coherent receiver array spatially samples turbulence‐distorted wavefronts and, with maximum‐ratio combining, enables signal recovery. Experimental BPSK tests under moderate turbulence approach theoretical combining efficiency, reducing BER from 1E‐2 to 1E‐15.
Alireza Fardoost, Fatemeh Ghaedi Vanani, Aneesh Sobhanan, Dhruvkumar Desai, Inwoong Kim, Olga Vassilieva, Paparao Palacharla, Guifang Li   +7 more
wiley   +1 more source

Characterization of Transcriptional, Epigenetic, and Phenotypic Plasticity and Discovery of Biomarkers in Acute and Chronic Murine Schistosomiasis Infection

The FASEB Journal, Volume 40, Issue 3, 15 February 2026.
Workflow for discovering parasitological and molecular changes related to Schistosoma mansoni infection. ABSTRACT Parasites can induce changes in their hosts, favoring the success of the infection and its development at each stage of their life cycle.
Sheila de Andrade Penteado Corrêa, Cauã da Silva Oliveira Teodoro, João Paulo Luz da Silva, Fabio Queiroz, Tayná Dandara do Amaral, Silmara Marques Allegretti, Fernanda Silva de Oliveira, Rafaela Ferraz Teixeira, Lizandra Maia de Sousa, Sílvio Roberto Consonni, Matheus de Souza Gomes, Christoph Grunau, Fernanda Janku Cabral   +12 more
wiley   +1 more source

Investigation of the Atmospheric Attenuation Factors in FSO Communication Systems Using the Taguchi Method

International Journal of Optics, 2020
In this study, Mie and Rayleigh scattering in free space optics (FSO) communication systems were investigated in terms of the atmospheric attenuation.
Pelin Demir, Güneş Yılmaz
doaj   +1 more source

Hybrid STA With FNN and CNN Models for Robust Channel Estimation in Turbulent FSO and Doppler‐Affected OFDM transmission for LEO Satellite Communication

IET Communications, Volume 20, Issue 1, January/December 2026.
A hybrid framework of deep learning‐based channel estimation for robust communication in free space optical (FSO)‐based low earth orbit (LEO) satellite system using advanced modulation formats for orthogonal frequency division multiplexing (OFDM) transmission. Simulations demonstrate that STA‐ SRCNN and STA‐DNCNN excel in terrestrial FSO channels (NMSE
Saad Rustum, Usman Habib, Salman Ahmed, Muhammad Ahmad, Muhammad Ijaz   +4 more
wiley   +1 more source

Optimation Free Space Optic (FSO) Design with Kim Model Using Space Diversity

JURNAL INFOTEL, 2019
The development of communication services in remote rural areas is difficult to use cable-based systems such as Digital Subscriber Line (DSL) and FTTx. One solution to solve this problem is to use a wireless system such as radio communication. Free Space Optic (FSO) communication system is a better choice compared to radio communication because of the ...
Dodi Zulherman, Anggun Fitrian Isnawati, Triyono Subekti   +2 more
openaire   +2 more sources

Performance Analysis of the LDPC‐Coded Hybrid LQAM‐MPPM for UWOC Systems

IET Optoelectronics, Volume 20, Issue 1, January/December 2026.
The effectiveness of LDPC codes in improving the performance of hybrid modulations is discussed, with coded 128‐QAM‐(12, 2) MPPM offering ~6.5 and 5.8 dB code gains at a BER of in strong and moderate turbulence, respectively. These results demonstrate the promise of hybrid modulation with LDPC as a robust and efficient modulation scheme for UWOC ...
Hongyan Jiang, Wanyi Hu, Xin Liao, Ning He, Wasiu Popoola, Ahmad Fairuz Omar, Sujan Rajbhandari   +6 more
wiley   +1 more source

Impact of Lunar Dust on Free Space Optical (FSO) Energy Harvesting

2024 IEEE Aerospace Conference
9 pages, 6 figures, to be published in IEEE Aerospace Conference ...
Naqbi, Mohamed, Loranger, Sebastien, Kurt, Gunes Karabulut   +2 more
openaire   +2 more sources

Recovery Capabilities of Rateless Codes on Simulated Turbulent Terrestrial Free Space Optics Channel Model

International Journal of Antennas and Propagation, 2013
Free Space Optics (FSO) links are affected by several impairments: optical turbulence, scattering, absorption, and pointing. In particular, atmospheric optical turbulence generates optical power fluctuations at the receiver that can degrade ...
A. Andò, S. Mangione, L. Curcio, S. Stivala, G. Garbo, R. Pernice, A. C. Busacca   +6 more
doaj   +1 more source

Q‐Learning Power Allocation in FSO‐NOMA Networks Against Intelligent Jamming Attacks

IET Optoelectronics, Volume 20, Issue 1, January/December 2026.
This paper proposes a reinforcement learning‐based power allocation framework for NOMA‐enabled free‐space optical (FSO) communication systems under intelligent jamming attacks. By employing a Q‐learning algorithm, the transmitter adaptively adjusts power distribution to maximise system throughput and resilience.
Mohammad Ali Amirabadi
wiley   +1 more source

Mid‐Infrared Free‐Space Optical Communications: Technologies, Demonstrations and Future Directions

IET Optoelectronics, Volume 20, Issue 1, January/December 2026.
Free‐space optical (FSO) communication is increasingly extending beyond the near‐infrared to the mid‐wave infrared (MWIR) and long‐wave infrared (LWIR) regions, which offer reduced turbulence, scattering and absorption for more robust links. This review summarises recent advances in MWIR/LWIR FSO technologies, including quantum cascade lasers, lithium ...
Darja Cirjulina, Zhuoyan Zhang, Abdul Hayee, Armands Ostrovskis, Richard Schatz, Hamza Dely, Yan‐Ting Sun, Toms Salgals, Sandis Spolitis, Vjaceslavs Bobrovs, Lu Zhang, Djamal Gacemi, Angela Vasanelli, Carlo Sirtori, Xianbin Yu, Oskars Ozolins, Xiaodan Pang   +16 more
wiley   +1 more source