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Achieving Efficient Spectrum Usage In Passive And Active Sensing
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Book Synopsis Achieving Efficient Spectrum Usage in Passive and Active Sensing by : Huaiyi Wang
Download or read book Achieving Efficient Spectrum Usage in Passive and Active Sensing written by Huaiyi Wang and published by . This book was released on 2017 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increasing demand for supporting more wireless services with higher performance and reliability within the frequency bands that are most conducive to operating cost-effective cellular and mobile broadband is aggravating current electromagnetic spectrum congestion. This situation motivates technology and management innovation to increase the efficiency of spectral use. If primary-secondary spectrum sharing can be shown possible without compromising (or while even improving) performance in an existing application, opportunities for efficiency may be realizable by making the freed spectrum available for commercial use. While both active and passive sensing systems are vitally important for many public good applications, opportunities for increasing the efficiency of spectrum use can be shown to exist for both systems. This dissertation explores methods and technologies for remote sensing systems that enhance spectral efficiency and enable dynamic spectrum access both within and outside traditionally allocated bands.
Author :National Academies of Sciences, Engineering, and Medicine Publisher :National Academies Press ISBN 13 :0309373085 Total Pages :254 pages Book Rating :4.3/5 (93 download)
Book Synopsis A Strategy for Active Remote Sensing Amid Increased Demand for Radio Spectrum by : National Academies of Sciences, Engineering, and Medicine
Download or read book A Strategy for Active Remote Sensing Amid Increased Demand for Radio Spectrum written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2015-09-21 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Active remote sensing is the principal tool used to study and to predict short- and long-term changes in the environment of Earth - the atmosphere, the oceans and the land surfaces - as well as the near space environment of Earth. All of these measurements are essential to understanding terrestrial weather, climate change, space weather hazards, and threats from asteroids. Active remote sensing measurements are of inestimable benefit to society, as we pursue the development of a technological civilization that is economically viable, and seek to maintain the quality of our life. A Strategy for Active Remote Sensing Amid Increased Demand for Spectrum describes the threats, both current and future, to the effective use of the electromagnetic spectrum required for active remote sensing. This report offers specific recommendations for protecting and making effective use of the spectrum required for active remote sensing.
Book Synopsis Green Automation for Sustainable Environment by : Sherin Zafar
Download or read book Green Automation for Sustainable Environment written by Sherin Zafar and published by CRC Press. This book was released on 2020-09-28 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores the concepts and role of green computing and its recent developments for making the environment sustainable. It focuses on green automation in disciplines such as computers, nanoscience, information technology, and biochemistry. This book is characterized through descriptions of sustainability, green computing, their relevance to the environment, society, and its applications. Presents how to make the environment sustainable through engineering aspects and green computing Explores concepts and the role of green computing with recent developments Processes green automation linked with various disciplines such as nanoscience, information technology, and biochemistry Explains the concepts of green computing linked with sustainable environment through information technology This book will be of interest to researchers, libraries, students, and academicians that are interested in the concepts of green computing linked with green automation through information technology and their impacts on the future.
Book Synopsis Spectrum Management for Science in the 21st Century by : National Research Council
Download or read book Spectrum Management for Science in the 21st Century written by National Research Council and published by National Academies Press. This book was released on 2010-02-25 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radio observations of the cosmos are gathered by geoscientists using complex earth-orbiting satellites and ground-based equipment, and by radio astronomers using large ground-based radio telescopes. Signals from natural radio emissions are extremely weak, and the equipment used to measure them is becoming ever-more sophisticated and sensitive. The radio spectrum is also being used by radiating, or "active," services, ranging from aircraft radars to rapidly expanding consumer services such as cellular telephones and wireless internet. These valuable active services transmit radio waves and thereby potentially interfere with the receive-only, or "passive," scientific services. Transmitters for the active services create an artificial "electronic fog" which can cause confusion, and, in severe cases, totally blinds the passive receivers. Both the active and the passive services are increasing their use of the spectrum, and so the potential for interference, already strong, is also increasing. This book addresses the tension between the active services' demand for greater spectrum use and the passive users' need for quiet spectrum. The included recommendations provide a pathway for putting in place the regulatory mechanisms and associated supporting research activities necessary to meet the demands of both users.
Book Synopsis Energy Efficient Spectrum Resources Usage in WPANs by : Luís Miguel Borges
Download or read book Energy Efficient Spectrum Resources Usage in WPANs written by Luís Miguel Borges and published by CRC Press. This book was released on 2023-01-31 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wireless Sensor Networks (WSNs) and the Internet of Things are facing tremendous advances both in terms of energy-efficiency as well as in the number of available applications. Consequently, there are challenges that need to be tackled for the future generation of WSNs. After giving an overview of the WSN protocols and IEEE 802.15.4 standard, this book proposes IEEE 802.15.4 Medium Access Control (MAC) sub-layer performance enhancements by employing not only RTS/CTS combined with packet concatenation but also scheduled channel poling (MC-SCP). Results have shown that the use of the RTS/CTS mechanism improves channel efficiency by decreasing the deferral time before transmitting a data packet. Furthermore, the Sensor Block Acknowledgment MAC (SBACK-MAC) protocol enables more efficiency as it allows the aggregation of several acknowledgement responses in one special Block Acknowledgment (BACK) Response packet. The throughput and delay performance have been mathematically derived under both ideal conditions (a channel environment with no transmission errors) and non-ideal conditions (with transmission errors). Simulation results successfully validate the proposed analytical models. This research reveals the importance of an appropriate design for the MAC sub-layer protocol for the desired WSN application. Depending on the mission of the WSN application, different protocols are required. Therefore, the overall performance of a WSN application certainly depends on the development and application of suitable e.g., MAC, network layer protocols.
Book Synopsis Handbook of Frequency Allocations and Spectrum Protection for Scientific Uses by : National Research Council
Download or read book Handbook of Frequency Allocations and Spectrum Protection for Scientific Uses written by National Research Council and published by National Academies Press. This book was released on 2007-04-29 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: The electromagnetic spectrum is a vital part of our environment. Information encoded in the spectrum of radiation arriving at earth from the universe is the means by which we learn about its workings and origin. Radiation collected from the Earth's land, oceans, biosphere, and atmosphere provide us with much of the data needed to better understand this environment. Wise use of the spectrum is necessary if we are to continue these advances in scientific understanding. To help guide this effort, the NSF and NASA asked the NRC to develop a set of principles for fostering effective allocation and protection of spectral bands for scientific research. This handbook contains practical information in this connection including a description of regulatory bodies and issues, a discussion of the relevant scientific background, a list of science spectrum allocations in the United States, and an analysis of spectrum protection issues.
Book Synopsis Using Cross-Layer Techniques for Communication Systems by : Rashvand, Habib F.
Download or read book Using Cross-Layer Techniques for Communication Systems written by Rashvand, Habib F. and published by IGI Global. This book was released on 2012-04-30 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although the existing layering infrastructure--used globally for designing computers, data networks, and intelligent distributed systems and which connects various local and global communication services--is conceptually correct and pedagogically elegant, it is now well over 30 years old has started create a serious bottleneck. Using Cross-Layer Techniques for Communication Systems: Techniques and Applications explores how cross-layer methods provide ways to escape from the current communications model and overcome the challenges imposed by restrictive boundaries between layers. Written exclusively by well-established researchers, experts, and professional engineers, the book will present basic concepts, address different approaches for solving the cross-layer problem, investigate recent developments in cross-layer problems and solutions, and present the latest applications of the cross-layer in a variety of systems and networks.
Book Synopsis Spectrum Access and Management for Cognitive Radio Networks by : Mohammad A Matin
Download or read book Spectrum Access and Management for Cognitive Radio Networks written by Mohammad A Matin and published by Springer. This book was released on 2016-09-16 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents cutting-edge research contributions that address various aspects of network design, optimization, implementation, and application of cognitive radio technologies. It demonstrates how to make better utilization of the available spectrum, cognitive radios and spectrum access to achieve effective spectrum sharing between licensed and unlicensed users. The book provides academics and researchers essential information on current developments and future trends in cognitive radios for possible integration with the upcoming 5G networks. In addition, it includes a brief introduction to cognitive radio networks for newcomers to the field.
Book Synopsis Bandwidth and Power Efficient Wireless Spectrum Sensing Networks by : Jaeweon Kim
Download or read book Bandwidth and Power Efficient Wireless Spectrum Sensing Networks written by Jaeweon Kim and published by . This book was released on 2011 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Opportunistic spectrum reuse is a promising solution to the two main causes of spectrum scarcity: most of the radio frequency (RF) bands are allocated by static licensing, and many of them are underutilized. Frequency spectrum can be more efficiently utilized by allowing communication systems to find out unoccupied spectrum and to use it harmlessly to the licensed users. Reliable sensing of these spectral opportunities is perhaps the most essential element of this technology. Despite significant work on spectrum sensing, further performance improvement is needed to approach its full potential. In this dissertation, wireless spectrum sensing networks (WSSNs) are investigated for reliable detection of the primary (licensed) users, that enables efficient spectrum utilization and minimal power consumption in communications. Reliable spectrum sensing is studied in depth in two parts: a single sensor algorithm and then cooperative sensing are proposed based on a spectral covariance sensing (SCS). The first novel contribution uses different statistical correlations of the received signal and noise in the frequency domain. This detector is analyzed theoretically and verified through realistic simulations using actual digital television signals captured in the US. The proposed SCS detector achieves significant improvement over the existing solutions in terms of sensitivity and also robustness to noise uncertainty. Second, SCS is extended to a distributed WSSN architecture to allow cooperation between 2 or more sensors. Theoretical limits of cooperative white space sensing under correlated shadowing are investigated. We analyze the probability of a false alarm when each node in the WSSN detects the white space using the SCS detection and the base station combines individual results to make the final decision. The detection performance compared with that of the cooperative energy detector is improved and fewer sensor nodes are needed to achieve the same sensitivity. Third, we propose a low power source coding and modulation scheme for power efficient communication between the sensor nodes in WSSN. Complete analysis shows that the proposed scheme not only minimizes total power consumption in the network but also improves bit error rate (BER).
Book Synopsis FCC Record by : United States. Federal Communications Commission
Download or read book FCC Record written by United States. Federal Communications Commission and published by . This book was released on 2002 with total page 778 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Emerging Technologies with High Impact for Ocean Sciences, Ecosystem Management, and Environmental Conservation by : Oscar Pizarro
Download or read book Emerging Technologies with High Impact for Ocean Sciences, Ecosystem Management, and Environmental Conservation written by Oscar Pizarro and published by Frontiers Media SA. This book was released on 2021-07-27 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Resource Allocation and Performance Analysis for Next Generation Wireless Communication and Radio Astronomy Systems by : Dong Han
Download or read book Resource Allocation and Performance Analysis for Next Generation Wireless Communication and Radio Astronomy Systems written by Dong Han and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Radio spectrum is a limited resource for both scientific research and wireless communications industry. The usage of spectrum can be either active, e.g., wireless data transmission and radar detection, or passive, e.g., radio astronomy observation. However, with the rapid growth of active communication and passive signal receiving demand, more efficient and flexible utilization of spectrum is vital. On the other hand, achieving a high power efficiency is also important to signal transmission and detection. This dissertation devotes to developing machine-type communication systems and distributed radio astronomy systems with limited spectrum and power resources. For a radio resource limited multi-tier Machine-type Communication (MTC) network, controlling random access congestion while satisfying the unique requirements of each tier and guaranteeing fairness among nodes is always a challenge. In the first part, we study the network dimensioning and radio resource partitioning for the uplink of an MTC network with signal-to-interference ratio (SIR)-based clustering and relaying, where MTC gateways (MTCGs) capture and forward the packets sent from MTC devices (MTCDs) to the base station (BS). Specifically, under transmission outage probability constraints, we investigate the tradeoff between network utility (in terms of transmission capacity and revenue) and resource allocation fairness. With both outage probability constraints and minimum MTCD density constraints, we propose approaches to maximize the weighted sum of quality of experience (QoE) of different tiers of MTCDs. Furthermore, a transmit power control strategy for MTCG-to-BS link is proposed to achieve a constant data rate. In the second part of this dissertation, we consider a new large-scale communication scheme where randomly distributed backscatter nodes are involved as secondary users to primary transmitter and primary receiver pairs. The secondary communication between a backscatter transmitter and a backscatter receiver introduces additional double fading channels and has a two-side effect to the primary communications. We derive the signal-to-interferenceplus-noise ratio and signal-to-interference ratio based coverage probabilities for two network configuration scenarios, which can provide useful insights in designing such systems. A conflict of the spectrum rights and needs between active wireless communication systems and passive radio astronomy systems (RASs) has become substantially greater due to the phenomenal expansion of wireless communications and increased interest in RAS observation. For sustainable growth and coexistence of cellular wireless communications (CWC) and RAS, a coordinated shared spectrum access paradigm was recently introduced. Embracing such a paradigm, the third part of this dissertation proposes a distributed auxiliary radio telescope (DART) system which can geographically and spectrally coexist with CWC while offering additional capability or performance enhancement to RAS. Theoretical performance analysis of the DART system with different quantization resolutions is presented, and approximate closed-form expressions are obtained. Adaptation of the cooling power of DART receivers according to the time-varying ambient temperature is also proposed. Furthermore, an analytical expression for the DART system parameters under the shared spectrum access paradigm and cooling power constraint to achieve the same performance as the existing single-dish RAS with a radio quiet zone is developed to provide guidance in the DART sysvii tem design. The numerical and simulation results illustrate the feasibility and potentials of the proposed DART system.
Book Synopsis Green Mobile Networks by : Nirwan Ansari
Download or read book Green Mobile Networks written by Nirwan Ansari and published by John Wiley & Sons. This book was released on 2017-03-16 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: Green communications is a very hot topic. As mobile networks evolve in terms of higher rates/throughput, a consequent impact on operating costs is due to (aggregate) network energy consumption. As such, design on 4G networks and beyond have increasingly started to focus on `energy efficiency’ or so-called ‘green’ networks. Many techniques and solutions have been proposed to enhance the energy efficiency of mobile networks, yet no book has provided an in-depth analysis of the energy consumption issues in mobile networks nor has detailed theories, tools and solutions for solving the energy efficiency problems. This book presents the techniques and solutions for enhancing energy efficiency of future mobile networks, and consists of three major parts. The first part presents a general description of mobile network evolution in terms of both capacity and energy efficiency. The second part discusses the advanced techniques to green mobile networks. The third part discusses the solutions that enhance mobile network energy efficiency as well as provides future directions. Whilst the reader is expected to have basic knowledge of wireless communications, the authors present a brief introduction of the evolution of mobile networks, providing the knowledge base for understanding the content of the book. In addition, complicated network problems are illustrated using simple examples. This will help the reader understand the concept and intuition of various techniques and solutions. Incorporates the latest research results from both academia and industry, providing an up-to-date overview of existing technologies and solutions on making mobile networks greener Consists of three sections with a gradually increasing technical depth on green mobile networks, providing the reader with a systematic view of the research area, and helping those with different technical backgrounds to better understand the content Covers existing enabling technologies for green mobile networking, including an innovative discussion of state-of-the-art solutions and algorithms
Book Synopsis From 5G to 6G by : Abdulrahman Yarali
Download or read book From 5G to 6G written by Abdulrahman Yarali and published by John Wiley & Sons. This book was released on 2023-06-30 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: From 5G to 6G Understand the transition to the sixth generation of wireless with this bold introduction The transition from the fifth generation of wireless communication (5G) to the coming sixth generation (6G) promises to be one of the most significant phases in the history of telecommunications. The technological, social, and logistical challenges promise to be significant, and meeting these challenges will determine the future of wireless communication. Experts and professionals across dozens of fields and industries are beginning to reckon seriously with these challenges as the 6G revolution approaches. From 5G to 6G provides an overview of this transition, offering a snapshot of a moment in which 5G is establishing itself and 6G draws ever nearer. It focuses on recent advances in wireless technology that brings 6G closer to reality, as well as the near-term challenges that still have to be met for this transition to succeed. The result is an essential book for anyone wishing to understand the future of wireless telecommunications in an increasingly connected world. From 5G to 6G readers will also find: 6G applications to both AI and Machine Learning, technologies which loom ever larger in wireless communication Discussion of subjects including smart healthcare, cybersecurity, extended reality, and more Treatment of the ongoing infrastructural and technological requirements for 6G From 5G to 6G is essential for researchers and academics in wireless communication and computer science, as well as for undergraduates in related subjects and professionals in wireless-adjacent fields.
Book Synopsis New World Vistas by : United States. USAF Scientific Advisory Board
Download or read book New World Vistas written by United States. USAF Scientific Advisory Board and published by . This book was released on 1996 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Introduction to Cognitive Radio Networks and Applications by : Geetam Tomar
Download or read book Introduction to Cognitive Radio Networks and Applications written by Geetam Tomar and published by CRC Press. This book was released on 2016-10-03 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cognitive radio is 5-G technology, comes under IEEE 802.22 WRAN (Wireless Regional Area Network) standards. It is currently experiencing rapid growth due to its potential to solve many of the problems affecting present-day wireless systems. The foremost objective of "Introduction to Cognitive Radio Networks and Applications" is to educate wireless communication generalists about cognitive radio communication networks. Written by international leading experts in the field, this book caters to the needs of researchers in the field who require a basis in the principles and the challenges of cognitive radio networks.
Book Synopsis Intelligent Sensing and Communications for Internet of Everything by : Zhengyu Zhu
Download or read book Intelligent Sensing and Communications for Internet of Everything written by Zhengyu Zhu and published by Academic Press. This book was released on 2022-01-14 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intelligent Sensing and Communications for Internet of Everything introduces three application scenarios of enhanced mobile broadband (eMBB), large-scale machine connection (mMTC) and ultra reliable low latency communication (URLLC). A new communication model, namely backscatter communication (BackCom), intelligent reflector surface (IRS) and unmanned aerial vehicle (UAV) technology in Internet of Everything (IoE), is described in detail. Also focusing on millimeter wave, the book discusses the potential application of terahertz 6G network spectrum in the Internet of Things (IoT). Finally, the applications of IoE network in big data, artificial intelligence (AI) technology and fog/edge computing technology are proposed. Systematically introduces the technical standards and market analysis of 5G's three application scenarios, as well as the problems and challenges faced Provides readers with the knowledge of spectrum energy efficiency and cost-effective IoE network solutions Introduces the application of physical layer related technologies to the IoT, such as BackCom, IRS and UAV relay in IoE, and millimeter wave technology Discusses the potential application of terahertz 6G network spectrum in the IoT
