Results 11 to 20 of about 61,814 (314)

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

open access: yesApplied 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   +11 more
doaj   +1 more source

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

open access: yesIEEE 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   +3 more
doaj   +1 more source

Experimental Demonstration of 40-Gb/s I-SC-FDM With 10G-Class Optics and Low-Complexity DSP for Next-Generation PON

open access: yesIEEE Photonics Journal, 2018
Low cost and low energy consumption are two important issues for the upgrade of next-generation passive optical network (PON). In this paper, we experimentally demonstrated a 40-Gb/s PON downstream transmission employing interleaved single carrier ...
Xizi Tang   +7 more
doaj   +1 more source

Development of methods for equalizing level networks

open access: yesRUDN Journal of Engineering Research, 2020
The article is devoted to comparison of methods of calculating the approximate elevations of nodal points when adjusting leveling networks by strict and non-strict methods.
Ekaterina N. Esina   +1 more
doaj   +1 more source

Equalized Time Reversal Beamforming for Frequency-Selective Indoor MISO Channels

open access: yesIEEE Access, 2017
Time-reversal (TR) is a beamforming technique for wireless frequency-selective channels, which has received increasing attention due to its high energy efficiency and low computational complexity.
Carlos A. Viteri-Mera   +1 more
doaj   +1 more source

Bandwidth and BER Improvement Employing a Pre-Equalization Circuit with White LED Arrays in a MISO VLC System

open access: yesApplied Sciences, 2019
This paper aims to extend the limited bandwidth of phosphorescent white LEDs for a multiple-input single-output (MISO) visible light communication (VLC) system.
Monette H. Khadr   +3 more
doaj   +1 more source

Switched Energy Management Strategy for Fuel Cell Hybrid Vehicle Based on Switch Network

open access: yesEnergies, 2020
Environmentally friendly and pollution-free fuel cell/lithium battery hybrid vehicles have received the attention of the community in recent years. It is imperative for fuel cell/lithium battery hybrid vehicles to use the energy management strategy (EMS)
Xu Chen   +4 more
doaj   +1 more source

Thermogram Breast Cancer Detection: A Comparative Study of Two Machine Learning Techniques

open access: yesApplied Sciences, 2020
Breast cancer is considered one of the major threats for women’s health all over the world. The World Health Organization (WHO) has reported that 1 in every 12 women could be subject to a breast abnormality during her lifetime. To increase survival
Fayez AlFayez   +2 more
doaj   +1 more source

Adaptive frequency-domain equalization for single-carrier MIMO systems [PDF]

open access: yes, 2004
Channel estimation and tracking pose real problems in wideband single-carrier wireless communication systems employing multiple transmit and receive antennas. An alternative to estimating the channel is to adaptively equalize the received symbols.
Coon, J   +7 more
core   +1 more source

Calibration and Equalization for the Measurement Channels of a Photoelectric Testing System With Intersecting Detection Areas

open access: yesIEEE Access, 2021
There are usually non-equilibrium transmission characteristic among the measurement channels of a photoelectric testing system with intersecting detection areas, and it will lead to a poorer measurement result provided that they are not properly ...
Ding Chen, Jinping Ni
doaj   +1 more source

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