Results 1 to 10 of about 21,457 (150)

Channel Identification Using Chaos for an Uplink/Downlink Multicarrier Code Division Multiple Access System

Journal of Telecommunications and Information Technology, 2023
A scheme of chaotic spreading sequence for multicarrier code division multiple access system (MC-CDMA) iproposed to estimate the transmission channel. This systespreads spectrum and identifies the channel, simultaneously.
Miloud Frikel, Said Safi, Boubekeur Targui, Mohammed M’Saad   +3 more
doaj   +1 more source

Machine Learning Applications for Short Reach Optical Communication

Photonics, 2022
With the rapid development of optical communication systems, more advanced techniques conventionally used in long-haul transmissions have gradually entered systems covering shorter distances below 100 km, where higher-speed connections are required in ...
Yapeng Xie, Yitong Wang, Sithamparanathan Kandeepan, Ke Wang   +3 more
doaj   +1 more source

Coherent Radar Target Detection With In-Band Cyclostationary Wireless Interference

IEEE Access, 2022
Spectral congestion necessitates the in-band operation or the spectrum-sharing of legacy radar and communication systems. Since these systems operate in the same band in spectrum-sharing mode, they interfere with one another. To address this problem from
Gunnery Srinath, H. Prashantha Kumar, Pathipati Srihari, Ratnasingham Tharmarasa, Thiagalingam Kirubarajan   +4 more
doaj   +1 more source

Evaluation of LDPC codes efficiency in channels with fading [PDF]

E3S Web of Conferences, 2023
The article discusses the operation of communication systems using a low-density parity check codes in channels with multipath propagation. This class of codes has found wide application in modern communication and broadcasting systems and is one of the ...
Shinkevich Artem, Pokamestov Dmitriy, Kryukov Yakov, Shalin Georgiy, Brovkin Andrey, Rogozhnikov Eugeniy   +5 more
doaj   +1 more source

Digital occlusal analysis of bite force distribution in partially edentulous patients before and after prosthetic rehabilitation: An in vivo study

SRM Journal of Research in Dental Sciences, 2021
Background: The measurement of bite force can provide useful data for the evaluation of jaw muscle function and activity. Technological advances in signal detection and processing have improved the quality of the information extracted from bite force ...
Liza Rahman, P Roshan Kumar, Natarajan Kalavathy, Mitha Shetty, Archana K Sanketh, M Roopa   +5 more
doaj   +1 more source

Turkey Red Oil as a Renewable Leveling and Dispersant Option for Polyester Dyeing with Dispersed Dyes

Textiles, 2023
The objective of this work was to evaluate Turkey red oil as a renewable dispersant and leveling option for dyeing polyester knitted fabric with disperse dyes.
Jully Schmidt Pinto Filippi, Angelo Oliveira Silva, Cintia Marangoni, Jeferson Correia, José Alexandre Borges Valle, Rita de Cassia Siqueira Curto Valle   +5 more
doaj   +1 more source

Investigation of FBMC-OQAM Equalization with Real Interference Prediction Algorithm Properties for MIMO Transmission Scheme

Sensors, 2023
Increasing the data transfer rate is an urgent task in cellular, high-frequency (HF) and special communication systems. The most common way to increase the data rate is to expand the bandwidth of the transmitted signal, which is often achieved through ...
Vladimir O. Varlamov, Evgeniy M. Lobov, Elizaveta O. Lobova   +2 more
doaj   +1 more source

Pilot-Assisted OFDM for Underwater Acoustic Communication

Journal of Marine Science and Engineering, 2021
Multicarrier techniques have made it possible to wirelessly transmit data at higher rates for underwater acoustic (UWA) communication. Several multicarrier techniques have been explored in the past for wireless data transmission.
Mohsin Murad, Imran A. Tasadduq, Pablo Otero   +2 more
doaj   +1 more source

Silica Microsphere WGMR-Based Kerr-OFC Light Source and Its Application for High-Speed IM/DD Short-Reach Optical Interconnects

Applied Sciences, 2022
Kerr optical frequency combs (OFCs) based on silica microsphere whispering gallery mode resonator (WGMR) have various applications where they are used as a light source.
Toms Salgals, Janis Alnis, Oskars Ozolins, Alexey V. Andrianov, Elena A. Anashkina, Inga Brice, Roberts Berkis, Xiaodan Pang, Aleksejs Udalcovs, Jurgis Porins, Sandis Spolitis, Vjaceslavs Bobrovs   +11 more
doaj   +1 more source

Time Domain Channel Estimation and Equalization of CP-OTFS Under Multiple Fractional Dopplers and Residual Synchronization Errors

IEEE Access, 2021
In the last few years, orthogonal time frequency space (OTFS) modulation has received significant attention as an alternative to OFDM especially for high mobilty scenarios.
Suvra Sekhar Das, Vivek Rangamgari, Shashank Tiwari, Subhas Chandra Mondal   +3 more
doaj   +1 more source