Search Results - tongtong+li

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Secure and Efficient Orthogonal Frequency Division Multiplexing Transmission System with Disguised Jamming

VALUE PROPOSITION The use of orthogonal frequency division multiplexing (OFDM) signal modulation has become widespread in current electronics. Currently 4G, 5G, LTE and other data and telecommunications systems utilize this modulation technique due to its numerous advantages.. With integration of OFDM into consumer, government, and corporate fields,...

Published: 8/16/2024 | Inventor(s): Tongtong Li, Jian Ren, Yuan Liang

Keywords(s):

Category(s): Computer Software, Telecommunications and Internet, Defense

Detection and Prediction of Mild Cognitive Impairment using Resting-State EEG

VALUE PROPOSITION Early discrimination and prediction of mild cognitive impairment (MCI) are crucial for the study of neurodegenerative mechanisms and interventions to promote cognitive resiliency. Existing work mainly focuses on the detection of MCI before Alzheimer’s onset; however, quantitative methods which enable prediction of progression...

Published: 8/13/2024 | Inventor(s): Tongtong Li, Jinxian Deng, Boxin Sun, Bruno Giordani, Mingyan Liu, Voyko Kavcic

Keywords(s):

Category(s): Medical

Blockchain-based Mobile Electronic Voting

VALUE PROPOSITION Electronic voting presents a convenient and cost-effective alternative to current paper ballot-based voting. It provides many benefits such as increased voter turnout and accuracy in the decision-making process. While presenting many improvements, e-voting still faces serious security challenges that hinder its adoption, especially...

Published: 6/25/2024 | Inventor(s): Jian Ren, Ehab Zaghloul, Tongtong Li

Keywords(s):

Category(s): Computer Software, Informatics

PMU-Embedded Analytics for Online Event Detection and Classification in Power Grids

The energy requirement of the world is increasing exponentially every year. With the power demand sites concentrated in the region with the highest population density, energy production sites must be located remotely. This isolation requires lengthy and complicated grids to be designed and manufactured to transmit power over long distances. Grid failures...

Published: 7/30/2024 | Inventor(s): Payman Dehghanian, Shiyuan Wang, Li Li

Keywords(s):

Category(s): Technology Classifications > Industrial or Consumer Tech > Energy Infrastructure and Environment

Regenerating Code uses Rate-matching to Improve Retrieval from Hostile Networks

Executive SummaryA combination of two new regenerating algorithms increases the ability to recover information in a hostile network. This layered approach yields a more efficient and reliable way of detecting and correcting malicious nodes.Description of TechnologyIn a hostile network, conventional regeneration codes struggle to restore corrupt nodes...

Published: 6/8/2021 | Inventor(s): Jian Ren, Jian Li, Tongtong Li

Keywords(s):

Category(s): Computer Software, Communication

Defense Against Primary User Emulation Attacks In Cognitive Radio Networks

Executive SummaryCognitive radio (CR) networks take advantage of unused bandwidth through which secondary unlicensed users may share the spectrum with the licensed primary users to better utilize the spectrum at any given time. Primary user emulation attacks (PUEAs) are malicious attacks in which a malicious user mimics the signal of a primary user...

Published: 6/8/2021 | Inventor(s): Tongtong Li, Jian Ren, Mai Abdelhakim, Ahmed Alahmadi

Keywords(s):

Category(s): Communication

Distributed Feedback Fiber Laser Pumped by Multimode Diode Lasers

Researchers at the University of Arizona College of Optical Sciences and Canada's Carleton University recently succeeded in fabricating high reflectivity (>99%) Fiber Bragg Gratings (FBGs) into phosphate glass fibers using UV light and a phase mask technique. With this new manufacturing technique, fiber lasers can be created as single monolithic...

Published: 4/3/2023 | Inventor(s): Nasser Peyghambarian, Axel Schülzgen, Li Li, Jacques Albert

Keywords(s):

Category(s): Technology Classifications > Imaging & Optics, Technology Classifications > Imaging & Optics > Lasers & Other Sources

All-Fiber Multicore Fiber Laser Devices

Researchers at the University of Arizona have developed a compact, power-scalable, alignment-free fiber laser that takes a new approach to stabilizing phase-locked operation of multi-core fiber lasers by completely removing all free space optical components. This high-brightness, all-fiber laser package uses passive optical fiber spliced at both ends...

Published: 4/3/2023 | Inventor(s): Nasser Peyghambarian, Axel Schülzgen, Li Li

Keywords(s):

Category(s): Technology Classifications > Imaging & Optics, Technology Classifications > Imaging & Optics > Fiber Optics, Technology Classifications > Imaging & Optics > Lasers & Other Sources