Results 81 to 90 of about 140,441 (346)

Optical Wireless Communications with Metasurfaces: Current Status and Potential for Intelligent Communications

Advanced Photonics Research, EarlyView.
Optical wireless communications (OWCs) provide a promising alternative to spectrum‐congested microwave wireless communications. Recently, the use of metasurfaces with sub‐wavelength features for dynamic beam steering, beam manipulation, and spatial or optical‐angular‐momentum mode generation, conversion, and multiplexing in OWCs is proposed and ...
Ke Wang, Chengwei Fang, Md Osman Ali, Xiaojun Chen, Safa Alghadi, Shuo Li, Jiayuan He, Sithamparanathan Kandeepan   +7 more
wiley   +1 more source

Quasi-Orthogonal Space-Time-Frequency Trellis Codes for MIMO-OFDM Systems [PDF]

, 2012
The main objective of this project is to design the full-rate Space-Time-Frequency Trellis code (STFTC), which is based on Quasi-Orthogonal designs for Multiple-Input Multiple-Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) systems.
arxiv   +1 more source

Zonated Copper‐Driven Breast Cancer Progression Countered by a Copper‐Depleting Nanoagent for Immune and Metabolic Reprogramming

Advanced Science, EarlyView.
Spatially resolved multiomics reveals that high‐copper zones are closely associated with tumor metastasis, immune‐desert phenotypes, and oxidative‐phosphorylation (OXPHOS)‐dependent proliferation. A targeted bacterial nanovesicle delivering copper‐depleting agents effectively reduces tumor copper levels, inhibits OXPHOS‐dependent tumor growth, and ...
Lin Chen, Saibo Ma, Hao Wu, Lingna Zheng, Yunpeng Yi, Guangnian Liu, Baoyi Li, Jiayi Sun, Yang Du, Bing Wang, Yike Liu, Cheng Zhang, Jing Chang, Yuheng Pang, Wenjing Wang, Meng Wang, Motao Zhu   +16 more
wiley   +1 more source

Clustered-orthogonal frequency division multiplexing for power line communication: when is it beneficial?

IET Communications, 2014
This study presents a comprehensive analysis to highlight advantages and disadvantages, in terms of channel capacity and computational complexity (CC), of a so-called clustered-orthogonal frequency division multiplexing (OFDM) scheme for power line ...
Moises Vidal Ribeiro, G. R. Colen, F. P. V. Campos, Zhi Quan, H. Poor   +4 more
semanticscholar   +1 more source

Transmission of data with orthogonal frequency division multiplexing technique for communication networks using GHz frequency band soliton carrier

IET Communications, 2014
Microring resonators (MRRs) can be used to generate optical millimetre-wave solitons with a broadband frequency of 40-60 GHz. Non-linear light behaviours within MRRs, such as chaotic signals, can be used to generate logic codes (digital codes).
I. Amiri, Monireh Ebrahimi, A. H. Yazdavar, S. Ghorbani, S. E. Alavi, S. M. Idrus, J. Ali   +6 more
semanticscholar   +1 more source

Adaptive-Modulation-Enabled WDM Impairment Reduction in Multichannel Optical OFDM Transmission Systems for Next-Generation PONs

IEEE Photonics Journal, 2010
The transmission performance of multichannel adaptively modulated optical orthogonal frequency-division multiplexing (AMOOFDM) signals is investigated numerically, for the first time, in optical-amplification-free and chromatic-dispersion-compensation ...
E. Giacoumidis, J. L. Wei, X. L. Yang, A. Tsokanos, J. M. Tang   +4 more
doaj   +1 more source

Isolation Techniques of Micro/Nano‐Scaled Species for Biomedical Applications

Advanced Science, EarlyView.
Separating micro/nano‐scale bioparticles from samples is essential for disease diagnosis, prevention, and monitoring. Therefore, a comprehensive overview of the latest advanced separation technologies is provided, and characteristics and limitations based on six key performance parameters, including purity, recovery rate, throughput, resolution, size ...
Qing Lu, Zhinan Zhang, Xianting Ding
wiley   +1 more source

Artificial Intelligent‐Enhanced Metabolite Profiling for Intraoperative IDH1 Genotyping in Glioma Using an Orthogonally Responsive SERS Probe

Advanced Science, EarlyView.
This study presents a novel approach for intraoperative identification of the IDH1 genotype in glioma patients using a surface‐enhanced Raman scattering (SERS) probe to measure glutathione and hydrogen peroxide. By integrating AI‐driven deep learning algorithms, the method achieves rapid and accurate genotype differentiation, offering the potential to ...
Hang Yin, Xin Zhang, Zheng Zhao, Chong Cao, Minhua Xu, Suhongrui Zhou, Tian Xuan, Ziyi Jin, Limei Han, Yang Fan, Cong Wang, Xiao Zhu, Ying Mao, Jinhua Yu, Cong Li   +14 more
wiley   +1 more source

Implementation of OFDM System For Image Transmission [PDF]

, 2015
Orthogonal frequency division multiplexing (OFDM) is a special case of frequency division multiplexing where a single data stream is transmitted over several lower rate subcarriers, which are placed orthogonal to each other.
, Mr.P.Ratna Bhaskar, K.Mounika
core   +2 more sources

Group-indexed orthogonal frequency division multiplexing index modulation aided performance trade off

ETRI Journal, 2022
In this study, a novel group-indexed orthogonal frequency division multiplexing index modulation (OFDM-IM) scheme is proposed to achieve a tradeoff between spectral efficiency (SE) and bit-error-rate (BER) performance.
Thomas Wilfred Edison Athisaya Anushya, Thangavelu Laxmikandan, Thirunavukkarasu Manimekalai   +2 more
doaj   +1 more source