Innovations in Solar Energy Harvesting and Photothermal Generation
Exploring the possibilities of 3D solar harvesting and spectral-selective nano hybrids for energy applications. Introduction of photothermal energy generation through transparent film multilayers. Delve into the advancements in PV solar cells and solar panels, paving the way for more efficient and i
0 views • 16 slides
Enhanced Spectral NITF Implementation Profile (SNIP) Version 1.2 Overview
This document outlines the Spectral NITF Implementation Profile (SNIP) version 1.2, its development, applications, and new elements. SNIP is a mandated standard for EO still imagery on DoD and IC systems, aiming to reduce integration costs and meet advanced exploitation needs for future HSI systems.
2 views • 14 slides
Dynamic Subchannel Operation in IEEE 802.11-23/1892r0: Enhancing Spectral Efficiency
The document discusses the implementation of Dynamic Subchannel Operation in IEEE 802.11 to address underutilization of bandwidth by narrowband devices. By allowing dynamic switching to secondary subchannels, the aim is to maximize spectral efficiency and enable communication with narrowband STAs on
0 views • 9 slides
Evolution of Wi-Fi and Cellular Technologies for Next Generation
The document discusses the initiation of a new study group for the next generation of Wi-Fi following IEEE 802.11be, emphasizing objectives like deterministic operation, increased throughput, and capacity. It outlines a timeline for the launch of new mainstream PHY/MAC generations every four years.
6 views • 12 slides
Understanding Algorithm Efficiency Analysis
In this chapter, Dr. Maram Bani Younes delves into the analysis of algorithm efficiency, focusing on aspects such as order of growth, best case scenarios, and empirical analysis of time efficiency. The dimensions of generality, simplicity, time efficiency, and space efficiency are explored, with a d
1 views • 28 slides
Rate Optimization in Wideband RIS-assisted Wireless Systems
This research focuses on rate optimization in wideband RIS-assisted wireless systems, specifically investigating MIMO RIS-assisted systems in sub-6 GHz mmWave settings. Pathloss and blockage modeling, along with LOS vs. spectral efficiency and RIS-UE distance vs. spectral efficiency analyses, are ke
0 views • 4 slides
High-Level Thoughts on Distributed Tone Resource Unit (dRU) Design in IEEE 802.11-23/1988r2 November 2023
Various aspects of Distributed Tone Resource Unit (dRU) design in IEEE 802.11-23/1988r2, such as PSD limitations, distributed transmission regulations, application areas, and open questions are discussed in this presentation by Lin Yang from Qualcomm. Topics include tone distribution, power pooling
0 views • 19 slides
IEEE 802.11-20/1938r8 TXOP Sharing for MU P2P Communication
The document discusses the IEEE 802.11-20/1938r8 standard and proposes mechanisms for an Access Point (AP) to facilitate peer-to-peer communication between stations (STAs). It introduces the concept of triggered TXOP sharing to enhance latency performance and spectral efficiency in scenarios involvi
8 views • 8 slides
802.11ax Evaluation for IMT-2020 eMBB in Dense Urban Environments
The document presents a detailed analysis of the 802.11ax technology's performance in meeting IMT-2020 requirements for eMBB in dense urban settings. It includes results from simulations evaluating peak spectral efficiency, data rates, user experience, and mobility metrics. The study confirms 802.11
0 views • 14 slides
Evaluation of IEEE 802.11ax for IMT-2020 eMBB Dense Urban Test Environment
This document discusses the evaluation of IEEE 802.11ax technology in the context of the IMT-2020 Enhanced Mobile Broadband (eMBB) Dense Urban test environment. It analyzes the performance of 802.11ax in meeting the key PHY/MAC metrics required for eMBB Dense Urban scenarios, such as Peak Spectral E
2 views • 13 slides
Proposed Main Directions for Next-Gen IEEE 802.11 Standard
This proposal outlines a focused approach for utilizing spectrum below 7GHz, aiming for reliable communication with high data rates. It emphasizes spectral efficiency, throughput improvements, enhanced channel access, reliability, coverage, and reduced latency, targeting various use cases such as AR
0 views • 11 slides
Insights on Future Wireless Standards Development
Delve into the progression of IEEE 802.11 standards with a focus on the transition from 802.11be to the next generation. Discussions revolve around the evolution of PHY/MAC task groups, motivations for the new generation, and potential enhancements in system efficiency, latency, throughput, and spec
0 views • 8 slides
Multi-RU Indication in Trigger Frame for IEEE 802.11
This document discusses the concept of Multi-RU (Resource Unit) allocation in trigger frames for IEEE 802.11 standards, specifically focusing on the indication methods within trigger frames for improved spectral efficiency. The proposal suggests various options for indicating multiple RUs in trigger
0 views • 14 slides
Enhancing Wireless Spectrum Efficiency with Distributed-Tone Resource Units in IEEE 802.11
In the document "Jan 2023.doc: IEEE 802.11-23/0037r0," the focus is on leveraging Distributed-Tone Resource Units (dRU) to overcome Power Spectral Density (PSD) limitations in wireless communication. By distributing tones over a wide bandwidth, dRU allows for higher transmit power, enabling enhanced
0 views • 9 slides
Pure Shift NMR Workshop: Advancements and Insights
Explore the latest developments and insights in Pure Shift NMR spectroscopy through presentations on acquisition methods, implementations, and the quest for spectral purity. Discover the evolution of magnet development and the potential of high-temperature superconductivity in NMR technology. Delve
2 views • 27 slides
Understanding Ultraluminous X-ray Sources (ULXs) Properties
Explore the timing and spectral properties of Ultraluminous X-ray Sources (ULXs) through research conducted by Middleton, Gladstone, Roberts, Done, Uttley, and others. Learn about the spectral shapes, spectral deconvolutions, variability in X-ray spectra, timing tools, classification into low and hi
0 views • 23 slides
Quantum Query Complexity Measures for Symmetric Functions
Explore the relationships between query complexity measures, including quantum query complexity, adversary bounds, and spectral sensitivity, in the context of symmetric functions. Analysis includes sensitivity graphs, the quantum query model, and approximate counting methods. Results cover spectral
0 views • 19 slides
CAMSS Meteoroid Elemental Abundance Application and Modeling Development
Cameras for All-sky Meteor Surveillance Spectroscopy (CAMSS) aims to obtain meteoroid elemental abundances through relative ratios and absolute atom counts, sampling from comets and asteroids. The system uses grating cameras with high resolutions to automate spectral analysis processes. The CAMSS Co
0 views • 14 slides
Analytical Evaluation of IMT-2020 mMTC and URLLC Requirements in IEEE 802.11-19/0888r0
This contribution analyzes the IMT-2020 mMTC and URLLC requirements in IEEE 802.11-19/0888r0, evaluating the capabilities of 802.11ax technology in meeting these demands. It discusses key aspects such as connection density, message size, delay per user, evaluation scenarios, system configurations, S
0 views • 9 slides
Enhancing Energy Efficiency for Sustainable Development
This content covers a symposium on maximizing energy efficiency, presented by Richard Sedano at the NECPUC 2014 event. It introduces the Regulatory Assistance Project (RAP), a non-profit organization aiding government officials in energy and environmental issues with a focus on cost-effective energy
1 views • 27 slides
Understanding Infrared Spectroscopy: An Overview of Vibration Energy and Spectral Regions
Infrared spectroscopy involves analyzing absorption spectra resulting from changes in vibration and rotation energy in molecules. The infrared region spans from 0.8 to 200 μm, with distinct zones categorized based on wavenumber and wavelength. Group frequencies and fingerprint regions offer detaile
1 views • 26 slides
Modification of Nucleon Spectral Function in Nuclear Medium from QCD Sum Rules
Investigating the modification of nucleon properties in the nuclear medium using QCD sum rules, focusing on hadron properties, mass spectrum, and chiral symmetry restoration. The study discusses the mass differences, non-perturbative contributions, and the analysis of QCD sum rule in nuclear matter.
0 views • 27 slides
Addressing Energy Efficiency in Cooling Sector: 2021 Report Highlights
The 2021 update report from the TEAP Energy Efficiency Task Force emphasizes the critical nature of the climate emergency and the need to transition to lower GWP refrigerants and higher efficiency cooling systems. The report focuses on initiatives to enhance the efficiency of room ACs and refrigerat
0 views • 44 slides
Charge Transport Model for Swept Charge Devices (SCD) in Astrophysics Research
Exploring the charge transport model for Swept Charge Devices (SCD) in collaboration with various institutions like ISRO Satellite Centre and e2V technologies Ltd. The research aims to enhance spectral response, reduce uncertainties, and improve global lunar elemental mapping using advanced X-ray sp
0 views • 30 slides
Role of Solvent in Spectral Properties and Solvatochromism
Solvent plays a crucial role in physical and chemical processes, affecting kinetics, equilibria, and spectral properties such as UV-vis, IR, and NMR. Solvathochromism describes the change in spectral bands caused by solvent interactions. Factors like solvent polarity and hydrogen bonding influence d
0 views • 19 slides
Insights into Cosmic Ray Spectrum Breaks and Hardening after Centuries of High-Resolution Measurements
Spectral breaks in cosmic ray (CR) spectrum reveal rigidity-dependent behaviors, such as proton break at 240 GeV and remarkable hardening post-breaks. Various experiments like PAMELA, ATIC, CREAM II, and others showcase unique features and spectral indices, shedding light on CR composition and accel
0 views • 15 slides
Modified Transmit Spectral Mask for IEEE P802.15 Working Group
This submission presents a modified transmit spectral mask for TG3e by Japan Radio Co., Ltd. The proposed mask aims to improve power efficiency without violating radio regulations. The motivation for the modification is to reduce unwanted aliasing and enhance SNR by employing a steep anti-aliasing s
0 views • 17 slides
Understanding Yukawa Textures and Spectral Data in Computing
Exploring the low energy limit of the Heterotic string, focusing on Yukawa couplings and spectral data in the context of Calabi-Yau threefold and Weierstrass elliptically fibered CY3. The goal involves direct computation of challenging cohomologies and utilizing Fourier-Mukai transform for bundle co
0 views • 17 slides
Spectral Characteristics of Infrared Sounders: Overview and Comparison
This presentation discusses the spectral characteristics of classic and smallsat types of infrared sounders, focusing on key parameters of LEO hyperspectral IR sounder sensors, spectral coverage, resolution, sampling, as well as the impact of spectral bands on power consumption and volume in smallsa
0 views • 4 slides
Spectral and Radiometric Considerations for Government Remote Sensing Instruments
This presentation explores the important considerations in designing and calibrating government passive optical remote sensing instruments, focusing on spectral and radiometric aspects. Topics include spectral variation, design considerations, uniformity, reflectance calibration, and examples from i
0 views • 27 slides
IEEE 802.11-21 Spectral Mask Floor Considerations
This document discusses the considerations related to changing the absolute power spectral density (PSD) floor for IEEE 802.11-21 transmissions. It covers requirements from regulatory bodies like ETSI and FCC, as well as considerations for coexistence with technologies like 5GNR. The document also h
0 views • 10 slides
Energy Efficient Relay Antenna Selection for AF MIMO Two-Way Relay Channels
The study explores energy-efficient relay antenna selection for AF MIMO two-way relay channels, aiming to optimize energy efficiency while maintaining performance. It discusses the advantages and disadvantages of two-way MIMO relay systems, emphasizing higher spectral efficiency, improved reliabilit
0 views • 17 slides
PySAT Point Spectra Tool: Spectral Analysis and Regression Software
PySAT is a Python-based spectral analysis tool designed for point spectra processing and regression tasks. It offers various features such as preprocessing, data manipulation, multivariate regression, K-fold cross-validation, plotting capabilities, and more. The tool's modular interface allows users
0 views • 6 slides
Evolution of Light Emitting Diodes: From Discovery to Modern Applications
The history of Light Emitting Diodes (LEDs) dates back to the early 20th century, with significant milestones such as the discovery of electroluminescence in 1907 and the development of visible-spectrum LEDs in the 1960s. LEDs operate based on a semiconductor chip doped with impurities to create a p
0 views • 11 slides
SUNSTORM: Advanced X-ray Technology for Solar Measurements
SUNSTORM, also known as XFM, is a cutting-edge technology designed specifically for measuring X-rays from the Sun, tailored for Space Weather monitoring. It offers high spectral and time resolution, a wide spectral range, and a large dynamic range, making it ideal for various scientific studies rela
0 views • 4 slides
Insights into Binning and Response Matrices for Spectral Analysis
Understanding the impact of binning and response matrices in spectral analysis, including energy bin properties, flux evaluation techniques, assumptions, and strategies for improvement. The discussion delves into challenges and solutions for accurate data interpretation and modeling in high-resoluti
0 views • 20 slides
Exploring the Ethics of Efficiency in Economics Education
Delve into the intriguing discussion on whether efficiency is ethical in the realms of economics and education. This session, featuring the new Ethics, Economics, and Social Issues curriculum through EconEdLink, analyzes the concept of efficiency through diverse examples and engages participants in
0 views • 26 slides
Comprehensive Analysis of Full-Duplex Massive MIMO Cellular Networks with Low-Resolution ADCs/DACs
Explore the feasibility and advantages of full-duplex massive MIMO technology in cellular networks, focusing on enhancing spectral efficiency, reducing latency, and improving reliability. Discuss challenges such as self-interference and propose solutions like using low-resolution ADCs/DACs. The stud
0 views • 8 slides
Enhancing Spectral Efficiency Through Nonprimary Channel Access in IEEE 802.11
IEEE 802.11 is exploring nonprimary channel access to address underutilization of spectrum and improve latency and throughput. This approach involves enabling nonprimary channel access with simple modifications to existing rules, such as limiting TXOP duration and using control frames for coordinati
0 views • 13 slides
Advancements in Non-Orthogonal Multiple Access (NOMA) Technology
Non-Orthogonal Multiple Access (NOMA) technology has revolutionized the way multiple users' messages are superimposed and transmitted over the same frequency simultaneously. NOMA offers enhanced spectral efficiency, massive connectivity, and increased throughput compared to traditional multiple acce
0 views • 5 slides