Advanced Radio Frequency Antennas for Modern Communication and Medical Systems

Download Advanced Radio Frequency Antennas for Modern Communication and Medical Systems PDF Online Free

Author :
Publisher : BoD – Books on Demand
ISBN 13 : 1839683457
Total Pages : 282 pages
Book Rating : 4.8/5 (396 download)

DOWNLOAD NOW!


Book Synopsis Advanced Radio Frequency Antennas for Modern Communication and Medical Systems by : Albert Sabban

Download or read book Advanced Radio Frequency Antennas for Modern Communication and Medical Systems written by Albert Sabban and published by BoD – Books on Demand. This book was released on 2020-09-23 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main objective of this book is to present novel radio frequency (RF) antennas for 5G, IOT, and medical applications. The book is divided into four sections that present the main topics of radio frequency antennas. The rapid growth in development of cellular wireless communication systems over the last twenty years has resulted in most of world population owning smartphones, smart watches, I-pads, and other RF communication devices. Efficient compact wideband antennas are crucial in RF communication devices. This book presents information on planar antennas, cavity antennas, Vivaldi antennas, phased arrays, MIMO antennas, beamforming phased array reconfigurable Pabry-Perot cavity antennas, and time modulated linear array.

Proceedings of ICACTCE'23 — The International Conference on Advances in Communication Technology and Computer Engineering

Download Proceedings of ICACTCE'23 — The International Conference on Advances in Communication Technology and Computer Engineering PDF Online Free

Author :
Publisher : Springer Nature
ISBN 13 : 303137164X
Total Pages : 744 pages
Book Rating : 4.0/5 (313 download)

DOWNLOAD NOW!


Book Synopsis Proceedings of ICACTCE'23 — The International Conference on Advances in Communication Technology and Computer Engineering by : Celestine Iwendi

Download or read book Proceedings of ICACTCE'23 — The International Conference on Advances in Communication Technology and Computer Engineering written by Celestine Iwendi and published by Springer Nature. This book was released on 2023-10-25 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today, communication technology and computer engineering are intertwined, with advances in one field driving advances in the other, leading to the development of outstanding technologies. This book delves into the latest trends and breakthroughs in the areas of communication, Internet of things, cloud computing, big data, artificial intelligence, and machine learning. This book discusses challenges and opportunities that arise with the integration of communication technology and computer engineering. In addition, the book examines the ethical and social implications, including issues related to privacy, security, and digital divide and law. We have explored the future direction of these fields and the potential for further breakthroughs and innovations. The book is intended for a broad audience of undergraduate and graduate students, practicing engineers, and readers without a technical background who have an interest in learning about communication technology and computer engineering.

Low-Visibility Antennas for Communication Systems

Download Low-Visibility Antennas for Communication Systems PDF Online Free

Author :
Publisher : CRC Press
ISBN 13 : 1498777279
Total Pages : 295 pages
Book Rating : 4.4/5 (987 download)

DOWNLOAD NOW!


Book Synopsis Low-Visibility Antennas for Communication Systems by : Albert Sabban

Download or read book Low-Visibility Antennas for Communication Systems written by Albert Sabban and published by CRC Press. This book was released on 2015-09-18 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: Low-visibility antennas have many attractive features, such as being low-profile, flexible, lightweight, small-volume, and low-cost. Low-Visibility Antennas for Communication Systems provides explicit guidelines for the development of these antennas. Offering valuable insight into emerging antenna technologies, the book:Introduces the fundamental t

Applications of Artificial Intelligence in Wireless Communication Systems

Download Applications of Artificial Intelligence in Wireless Communication Systems PDF Online Free

Author :
Publisher : IGI Global
ISBN 13 : 166847350X
Total Pages : 307 pages
Book Rating : 4.6/5 (684 download)

DOWNLOAD NOW!


Book Synopsis Applications of Artificial Intelligence in Wireless Communication Systems by : Kumar, Karan

Download or read book Applications of Artificial Intelligence in Wireless Communication Systems written by Kumar, Karan and published by IGI Global. This book was released on 2023-06-05 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: The application of artificial intelligence technology to 5G wireless communications is now appropriate to address the design of optimized physical layers, complicated decision-making, network management, and resource optimization tasks within networks. In exploring 5G wireless technologies and communication systems, artificial intelligence is a powerful tool and a research topic with numerous potential fields of application that require further study. Applications of Artificial Intelligence in Wireless Communication Systems explores the applications of artificial intelligence for the optimization of wireless communication systems, including channel models, channel state estimation, beamforming, codebook design, signal processing, and more. Covering key topics such as neural networks, deep learning, and wireless systems, this reference work is ideal for computer scientists, industry professionals, researchers, academicians, scholars, practitioners, instructors, and students.

Proceedings of the 8th International Conference on Space Science and Communication

Download Proceedings of the 8th International Conference on Space Science and Communication PDF Online Free

Author :
Publisher : Springer Nature
ISBN 13 : 9819701422
Total Pages : 433 pages
Book Rating : 4.8/5 (197 download)

DOWNLOAD NOW!


Book Synopsis Proceedings of the 8th International Conference on Space Science and Communication by : Mohammad Tariqul Islam

Download or read book Proceedings of the 8th International Conference on Space Science and Communication written by Mohammad Tariqul Islam and published by Springer Nature. This book was released on with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Second International Adaptive and Sustainable Science, Engineering and Technology Conference

Download The Second International Adaptive and Sustainable Science, Engineering and Technology Conference PDF Online Free

Author :
Publisher : Springer Nature
ISBN 13 : 3031539354
Total Pages : 322 pages
Book Rating : 4.0/5 (315 download)

DOWNLOAD NOW!


Book Synopsis The Second International Adaptive and Sustainable Science, Engineering and Technology Conference by : Sunday Cookey Ekpo

Download or read book The Second International Adaptive and Sustainable Science, Engineering and Technology Conference written by Sunday Cookey Ekpo and published by Springer Nature. This book was released on with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Wideband RF Technologies and Antennas in Microwave Frequencies

Download Wideband RF Technologies and Antennas in Microwave Frequencies PDF Online Free

Author :
Publisher : John Wiley & Sons
ISBN 13 : 1119048656
Total Pages : 464 pages
Book Rating : 4.1/5 (19 download)

DOWNLOAD NOW!


Book Synopsis Wideband RF Technologies and Antennas in Microwave Frequencies by : Dr. Albert Sabban

Download or read book Wideband RF Technologies and Antennas in Microwave Frequencies written by Dr. Albert Sabban and published by John Wiley & Sons. This book was released on 2016-06-14 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents wideband RF technologies and antennas in the microwave band and millimeter-wave band This book provides an up-to-date introduction to the technologies, design, and test procedures of RF components and systems at microwave frequencies. The book begins with a review of the elementary electromagnetics and antenna topics needed for students and engineers with no basic background in electromagnetic and antenna theory. These introductory chapters will allow readers to study and understand the basic design principles and features of RF and communication systems for communications and medical applications. After this introduction, the author examines MIC, MMIC, MEMS, and LTCC technologies. The text will also present information on meta-materials, design of microwave and mm wave systems, along with a look at microwave and mm wave receivers, transmitters and antennas. Discusses printed antennas for wireless communication systems and wearable antennas for communications and medical applications Presents design considerations with both computed and measured results of RF communication modules and CAD tools Includes end-of-chapter problems and exercises Wideband RF Technologies and Antennas in Microwave Frequencies is designed to help electrical engineers and undergraduate students to understand basic communication and RF systems definition, electromagnetic and antennas theory and fundamentals with minimum integral and differential equations. Albert Sabban, PhD, is a Senior Researcher and Lecturer at Ort Braude College Karmiel Israel. Dr. Sabban was RF and antenna specialist at communication and Biomedical Hi-tech Companies. He designed wearable compact antennas to medical systems. From 1976 to 2007, Dr. Albert Sabban worked as a senior R&D scientist and project leader in RAFAEL.

Multifunctional Antennas and Arrays for Wireless Communication Systems

Download Multifunctional Antennas and Arrays for Wireless Communication Systems PDF Online Free

Author :
Publisher : John Wiley & Sons
ISBN 13 : 1119535050
Total Pages : 466 pages
Book Rating : 4.1/5 (195 download)

DOWNLOAD NOW!


Book Synopsis Multifunctional Antennas and Arrays for Wireless Communication Systems by : Satish K. Sharma

Download or read book Multifunctional Antennas and Arrays for Wireless Communication Systems written by Satish K. Sharma and published by John Wiley & Sons. This book was released on 2021-05-04 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: MULTIFUNCTIONAL ANTENNAS AND ARRAYS FOR WIRELESS COMMUNICATION SYSTEMS Offers an up-to-date discussion of multifunctional antennas and arrays for wireless communication systems Multifunctional Antennas and Arrays for Wireless Communication Systems is a comprehensive reference on state-of-the-art reconfigurable antennas and 4G/5G communication antennas. The book gives a unique perspective while giving a comprehensive overview of the following topics: Frequency reconfigurable antennas Pattern reconfigurable antennas Polarization reconfigurable antennas Reconfigurable antennas using Liquid Metal, Piezoelectric, and RF MEMS MIMO and 4G/5G wireless communication antennas Metamaterials and metasurfaces in reconfigurable antennas Multifunctional antennas for user equipments (UEs) Defense related antennas and applications Flat panel phased array antennas The book is a valuable resource for the practicing engineer as well as for those within the research field. As wireless communications continuously evolves, more and more functionally will be required, and thus multifunctional antennas and RF systems will be necessary. These multifunctional antennas will require a degree of reconfigurability, and this book discusses various methods which enable this. The main topics of frequency, pattern, and polarization reconfigurability is first discussed. Methods utilizing unique materials and devices, both real and artificial are discussed. The book also delves into 4G/5G antennas as it relates to MIMO, and millimeter-wave phased arrays. Finally, there is a section on defense related multifunctional RF antenna systems.

Handbook of Research on Advanced Trends in Microwave and Communication Engineering

Download Handbook of Research on Advanced Trends in Microwave and Communication Engineering PDF Online Free

Author :
Publisher : IGI Global
ISBN 13 : 1522507744
Total Pages : 716 pages
Book Rating : 4.5/5 (225 download)

DOWNLOAD NOW!


Book Synopsis Handbook of Research on Advanced Trends in Microwave and Communication Engineering by : El Oualkadi, Ahmed

Download or read book Handbook of Research on Advanced Trends in Microwave and Communication Engineering written by El Oualkadi, Ahmed and published by IGI Global. This book was released on 2016-08-25 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wireless communications have become invaluable in the modern world. The market is going through a revolutionary transformation as new technologies and standards endeavor to keep up with demand for integrated and low-cost mobile and wireless devices. Due to their ubiquity, there is also a need for a simplification of the design of wireless systems and networks. The Handbook of Research on Advanced Trends in Microwave and Communication Engineering showcases the current trends and approaches in the design and analysis of reconfigurable microwave devices, antennas for wireless applications, and wireless communication technologies. Outlining both theoretical and experimental approaches, this publication brings to light the unique design issues of this emerging research, making it an ideal reference source for engineers, researchers, graduate students, and IT professionals.

Implanted Antennas in Medical Wireless Communications

Download Implanted Antennas in Medical Wireless Communications PDF Online Free

Author :
Publisher : Morgan & Claypool Publishers
ISBN 13 : 159829055X
Total Pages : 82 pages
Book Rating : 4.5/5 (982 download)

DOWNLOAD NOW!


Book Synopsis Implanted Antennas in Medical Wireless Communications by : Yahya Rahmat-Samii

Download or read book Implanted Antennas in Medical Wireless Communications written by Yahya Rahmat-Samii and published by Morgan & Claypool Publishers. This book was released on 2006-12-01 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the main objectives of this lecture is to summarize the results of recent research activities of the authors on the subject of implanted antennas for medical wireless communication systems. It is anticipated that ever sophisticated medical devices will be implanted inside the human body for medical telemetry and telemedicine. To establish effective and efficient wireless links with these devices, it is pivotal to give special attention to the antenna designs that are required to be low profile, small, safe and cost effective. In this book, it is demonstrated how advanced electromagnetic numerical techniques can be utilized to design these antennas inside as realistic human body environment as possible. Also it is shown how simplified models can assist the initial designs of these antennas in an efficient manner.

Antenna and Sensor Technologies in Modern Medical Applications

Download Antenna and Sensor Technologies in Modern Medical Applications PDF Online Free

Author :
Publisher : John Wiley & Sons
ISBN 13 : 1119683300
Total Pages : 624 pages
Book Rating : 4.1/5 (196 download)

DOWNLOAD NOW!


Book Synopsis Antenna and Sensor Technologies in Modern Medical Applications by : Yahya Rahmat-Samii

Download or read book Antenna and Sensor Technologies in Modern Medical Applications written by Yahya Rahmat-Samii and published by John Wiley & Sons. This book was released on 2021-03-16 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: A guide to the theory and recent development in the medical use of antenna technology Antenna and Sensor Technologies in Modern Medical Applications offers a comprehensive review of the theoretical background, design, and the latest developments in the application of antenna technology. Written by two experts in the field, the book presents the most recent research in the burgeoning field of wireless medical telemetry and sensing that covers both wearable and implantable antenna and sensor technologies. The authors review the integrated devices that include various types of sensors wired within a wearable garment that can be paired with external devices. The text covers important developments in sensor-integrated clothing that are synonymous with athletic apparel with built-in electronics. Information on implantable devices is also covered. The book explores technologies that utilize both inductive coupling and far field propagation. These include minimally invasive microwave ablation antennas, wireless targeted drug delivery, and much more. This important book: Covers recent developments in wireless medical telemetry Reviews the theory and design of in vitro/in vivo testing Explores emerging technologies in 2D and 3D printing of antenna/sensor fabrication Includes a chapter with an annotated list of the most comprehensive and important references in the field Written for students of engineering and antenna and sensor engineers, Antenna and Sensor Technologies in Modern Medical Applications is an essential guide to understanding human body interaction with antennas and sensors.

Novel Wearable Antennas for Communication and Medical Systems

Download Novel Wearable Antennas for Communication and Medical Systems PDF Online Free

Author :
Publisher : CRC Press
ISBN 13 : 9781138047907
Total Pages : 0 pages
Book Rating : 4.0/5 (479 download)

DOWNLOAD NOW!


Book Synopsis Novel Wearable Antennas for Communication and Medical Systems by : Albert Sabban

Download or read book Novel Wearable Antennas for Communication and Medical Systems written by Albert Sabban and published by CRC Press. This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 9.10 Active Transmitting Antenna

Millimeter Wave Wireless Communications

Download Millimeter Wave Wireless Communications PDF Online Free

Author :
Publisher : Pearson Education
ISBN 13 : 0132172283
Total Pages : 705 pages
Book Rating : 4.1/5 (321 download)

DOWNLOAD NOW!


Book Synopsis Millimeter Wave Wireless Communications by : Theodore S. Rappaport

Download or read book Millimeter Wave Wireless Communications written by Theodore S. Rappaport and published by Pearson Education. This book was released on 2015 with total page 705 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Definitive, Comprehensive Guide to Cutting-Edge Millimeter Wave Wireless Design “This is a great book on mmWave systems that covers many aspects of the technology targeted for beginners all the way to the advanced users. The authors are some of the most credible scholars I know of who are well respected by the industry. I highly recommend studying this book in detail.” —Ali Sadri, Ph.D., Sr. Director, Intel Corporation, MCG mmWave Standards and Advanced Technologies Millimeter wave (mmWave) is today's breakthrough frontier for emerging wireless mobile cellular networks, wireless local area networks, personal area networks, and vehicular communications. In the near future, mmWave products, systems, theories, and devices will come together to deliver mobile data rates thousands of times faster than today's existing cellular and WiFi networks. In Millimeter Wave Wireless Communications, four of the field's pioneers draw on their immense experience as researchers, entrepreneurs, inventors, and consultants, empowering engineers at all levels to succeed with mmWave. They deliver exceptionally clear and useful guidance for newcomers, as well as the first complete desk reference for design experts. The authors explain mmWave signal propagation, mmWave circuit design, antenna designs, communication theory, and current standards (including IEEE 802.15.3c, Wireless HD, and ECMA/WiMedia). They cover comprehensive mmWave wireless design issues, for 60 GHz and other mmWave bands, from channel to antenna to receiver, introducing emerging design techniques that will be invaluable for research engineers in both industry and academia. Topics include Fundamentals: communication theory, channel propagation, circuits, antennas, architectures, capabilities, and applications Digital communication: baseband signal/channel models, modulation, equalization, error control coding, multiple input multiple output (MIMO) principles, and hardware architectures Radio wave propagation characteristics: indoor and outdoor applications Antennas/antenna arrays, including on-chip and in-package antennas, fabrication, and packaging Analog circuit design: mmWave transistors, fabrication, and transceiver design approaches Baseband circuit design: multi–gigabit-per-second, high-fidelity DAC and ADC converters Physical layer: algorithmic choices, design considerations, and impairment solutions; and how to overcome clipping, quantization, and nonlinearity Higher-layer design: beam adaptation protocols, relaying, multimedia transmission, and multiband considerations 60 GHz standardization: IEEE 802.15.3c for WPAN, Wireless HD, ECMA-387, IEEE 802.11ad, Wireless Gigabit Alliance (WiGig)

Antennas for Base Stations in Wireless Communications

Download Antennas for Base Stations in Wireless Communications PDF Online Free

Author :
Publisher : McGraw Hill Professional
ISBN 13 : 0071612890
Total Pages : 430 pages
Book Rating : 4.0/5 (716 download)

DOWNLOAD NOW!


Book Synopsis Antennas for Base Stations in Wireless Communications by : Zhi Ning Chen

Download or read book Antennas for Base Stations in Wireless Communications written by Zhi Ning Chen and published by McGraw Hill Professional. This book was released on 2009-07-01 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: Design Antennas for Modern Wireless Communications Systems Written by a global team of expert contributors, this book offers complete details on the wide range of antennas used in today's wireless communication networks. Coverage includes the most popular applications in WWAN (GSM, CDMA, and WCDMA), WLAN (Bluetooth and WiFi), WMAN (WiMAX), and WPAN (UWB and RFID). Antennas for Base Stations in Wireless Communications presents a full picture of modern base station antenna technology--from fundamentals and parameters to engineering and advanced solutions--and highlights new technologies in antenna design with enhanced performance. Real-world case studies provide you with practical examples that can be applied to your own system designs. Apply measurement techniques for various parameters Enable frequency re-use and channel capacity optimization in mobile radio networks Design antennas for mobile communications-CDMA, GSM, and WCDMA Implement advanced antenna technologies for GSM base stations Facilitate enhanced system capacity Design unidirectional antennas, including directed dipole, wideband patch, and complementary antennas Optimize antenna designs for WLAN (WiFi) applications Design antennas for Wireless Personal Area Network (WPAN) applications, including RFID and UWB

Multifunctional Antennas and Arrays for Wireless Communication Systems

Download Multifunctional Antennas and Arrays for Wireless Communication Systems PDF Online Free

Author :
Publisher : John Wiley & Sons
ISBN 13 : 1119534976
Total Pages : 464 pages
Book Rating : 4.1/5 (195 download)

DOWNLOAD NOW!


Book Synopsis Multifunctional Antennas and Arrays for Wireless Communication Systems by : Satish K. Sharma

Download or read book Multifunctional Antennas and Arrays for Wireless Communication Systems written by Satish K. Sharma and published by John Wiley & Sons. This book was released on 2021-04-13 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: MULTIFUNCTIONAL ANTENNAS AND ARRAYS FOR WIRELESS COMMUNICATION SYSTEMS Offers an up-to-date discussion of multifunctional antennas and arrays for wireless communication systems Multifunctional Antennas and Arrays for Wireless Communication Systems is a comprehensive reference on state-of-the-art reconfigurable antennas and 4G/5G communication antennas. The book gives a unique perspective while giving a comprehensive overview of the following topics: Frequency reconfigurable antennas Pattern reconfigurable antennas Polarization reconfigurable antennas Reconfigurable antennas using Liquid Metal, Piezoelectric, and RF MEMS MIMO and 4G/5G wireless communication antennas Metamaterials and metasurfaces in reconfigurable antennas Multifunctional antennas for user equipments (UEs) Defense related antennas and applications Flat panel phased array antennas The book is a valuable resource for the practicing engineer as well as for those within the research field. As wireless communications continuously evolves, more and more functionally will be required, and thus multifunctional antennas and RF systems will be necessary. These multifunctional antennas will require a degree of reconfigurability, and this book discusses various methods which enable this. The main topics of frequency, pattern, and polarization reconfigurability is first discussed. Methods utilizing unique materials and devices, both real and artificial are discussed. The book also delves into 4G/5G antennas as it relates to MIMO, and millimeter-wave phased arrays. Finally, there is a section on defense related multifunctional RF antenna systems.

Antennas for Portable Devices

Download Antennas for Portable Devices PDF Online Free

Author :
Publisher : John Wiley & Sons
ISBN 13 : 0470319658
Total Pages : 304 pages
Book Rating : 4.4/5 (73 download)

DOWNLOAD NOW!


Book Synopsis Antennas for Portable Devices by : Zhi Ning Chen

Download or read book Antennas for Portable Devices written by Zhi Ning Chen and published by John Wiley & Sons. This book was released on 2007-04-04 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offers a comprehensive and practical reference guide to antenna design and engineering for portable devices Antennas are often the most bulky components in many portable wireless devices such as mobile phones. Whilst the demand for ever smaller and more powerful wireless devices increases, as does the importance of designing and engineering smaller antennas to fit these devices. Antennas for Portable Devices provides a complete and cutting-edge guide to the design and engineering of small antennas for portable electronic devices such as mobile phone handsets, laptop computers, RFID (radio frequency identification), microwave thermal therapies devices, wearable devices, and UWB (ultra-wideband) based consumer devices. The book addresses practical engineering issues that antenna professionals have to deal with. It explains the immediate demands for existing systems; discusses the antenna technology for the latest and emerging applications, and gives comprehensive coverage of hot topics in the wireless industry. Issues including design considerations, engineering design, measurement setup and methodology, and practical applications are all covered in depth. Antennas for Portable Devices: Covers antennas for all modern portable wireless devices from handsets, RFID tags, laptops, wearable sensors, UWB-based wireless USB dongles and handheld microwave treatment devices Explains how to design and engineer applications for miniaturization of antenna technology, utilising practical case studies to provide the reader with an understanding of systems and design skills Links the basic antenna theory, with design methodology, and engineering design Is amply illustrated with numerous figures and data tables of antenna designs to aid understanding Features contributions from industry and research experts in antenna technology and applications This invaluable resource will provide a comprehensive overview of miniaturizing antenna technology for antenna engineers in industry, and R&D organizations, graduate students, consultants, researchers, RF professionals, technical managers, as well as practitioners working in the area of consumer electronics, RF systems, wireless communications, or bio-medical devices.

Modern Antenna Systems

Download Modern Antenna Systems PDF Online Free

Author :
Publisher : BoD – Books on Demand
ISBN 13 : 9535129252
Total Pages : 222 pages
Book Rating : 4.5/5 (351 download)

DOWNLOAD NOW!


Book Synopsis Modern Antenna Systems by : Mohammad Abdul Matin

Download or read book Modern Antenna Systems written by Mohammad Abdul Matin and published by BoD – Books on Demand. This book was released on 2017-02-22 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of antenna engineering has been advancing at a remarkable pace to support modern communication systems. Recently, significant progress has been made in the development of new antennas and techniques targeted for applications in medical, defense, health care, communication, etc. The motivation of this project is to present cutting-edge research materials in the field of antennas for modern wireless communication.