Frequency-Hopped Spread-Spectrum Systems Have a Larger Multiple-Access Capability: The Effect of Interfering Signals with Unequal Power Levels

Frequency-Hopped Spread-Spectrum Systems Have a Larger Multiple-Access Capability: The Effect of Interfering Signals with Unequal Power Levels
Author: Evaggelos Geraniotis
Publisher:
Total Pages: 48
Release: 1988
Genre:
ISBN:

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In this report we present a new method for the evaluation of the probability of error of uncoded frequency-hopped spread-spectrum multiple-access (FH/SSMA) communications. For systems with binary FSK modulation, the method provides an accurate approximation and a tight upper bound to the bit error probability; for systems with M -ary FSK modulation, it provides tight upper bounds to the symbol error probability. This method relies on the integration of the product of the characteristic function of the envelope of the branch of the BFSK demodulator, which carries the desired signal, and of the derivative of the characteristic function of the envelope of the other branch; it can achieve any desirable accuracy and the computational effort required for its evaluation grows linearly with the number of interfering users. In the M -ary case, tight upper bounds based on the union bound and the results of the binary case are derived. Keywords: Frequency hopping, Spread spectrum, Multiple access, and Error control coding. (RH).

Multiple-Access Capability of Frequency-Hopped Spread-Spectrum Revisited: An Exact Analysis of the Effect of Unequal Power Levels

Multiple-Access Capability of Frequency-Hopped Spread-Spectrum Revisited: An Exact Analysis of the Effect of Unequal Power Levels
Author:
Publisher:
Total Pages: 49
Release: 1988
Genre:
ISBN:

Download Multiple-Access Capability of Frequency-Hopped Spread-Spectrum Revisited: An Exact Analysis of the Effect of Unequal Power Levels Book in PDF, Epub and Kindle

In this paper we present a new method for the evaluation of the probability of error of uncoded frequency-hopped spread-spectrum multiple-access (FH/SSMA) communications. For systems with binary FSK modulation the method provides an accurate approximation and a tight upper bound to the bit error probability; for systems with M-ary FSK modulation it provides tight upper bounds to the symbol error probability. This method relies on the integration of the product of the characteristic function of the envelope of the branch of the BFSK demodulator, which carries the desired signal, and of the derivative of the characteristic function of the envelope of the other branch; it can achieve any desirable accuracy and the computational effort required for its evaluation grows linearly with the number of interfering users. In the M-ary case tight upper bounds based on the union bound and the results of the binary case are derived.

Ultra-Wideband Communications Systems

Ultra-Wideband Communications Systems
Author: W. Pam Siriwongpairat
Publisher: John Wiley & Sons
Total Pages: 240
Release: 2007-11-16
Genre: Technology & Engineering
ISBN: 0470179759

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The only book that provides full coverage of UWB multiband OFDM technology Ultra-wideband (UWB) has emerged as a technology that offers great promise to satisfy the growing demand for low-cost, high-speed digital networks. The enormous bandwidth available, the potential for high data rates, and the promise for small size and low processing power with reduced implementation cost all present a unique opportunity for UWB to become a widely adopted radio solution for future wireless home networking technology. Ultra-Wideband Communications Systems is the first book to provide comprehensive coverage of the fundamental and advanced issues related to UWB technology, with a particular focus on multiband orthogonal frequency division multiplexing (multiband OFDM). The multiband OFDM approach was a leading method in the IEEE 802.15.3astandard and has recently been standardized by ECMA International. The book also explores several major advanced state-of-the-art technologies to enhance the performance of the standardized multiband OFDM approach. Additional coverage includes: * Characteristics of UWB channels * An overview of UWB single-band and multiband OFDM approaches * MIMO multiband OFDM * Performance characterization * Performance under practical considerations * Differential multiband OFDM * Power-controlled channel allocation * Cooperative UWB multiband OFDM Complete with pointers for future research opportunities to enhance the performance of UWB multiband OFDM technology over current and future wireless networks, this is an indispensable resource for graduate students, engineers, and academic and industrial researchers involved with UWB.

Fixed Broadband Wireless System Design

Fixed Broadband Wireless System Design
Author: Harry R. Anderson
Publisher: John Wiley & Sons
Total Pages: 532
Release: 2003-03-14
Genre: Technology & Engineering
ISBN: 9780470844380

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Drahtlose Systeme mit fester Bandbreite sind eine mögliche Technologie, mit der Endnutzer im privaten oder geschäftlichen Bereich an breitbandige Internet- und andere Dienste angebunden werden können. In diesem Werk finden Sie alle wesentlichen Informationen über solche Systeme. - drahtlose Systeme mit fester Bandbreite sind billiger und schneller anwendbar als traditionelle Glasfaser- oder telefongebundene Lösungen - Netzwerk mit fester Bandbreite kann viel größere Datenraten zur Verfügung stellen als die derzeit im Kommen befindlichen zellularen Systeme der dritten und vierten Generation - hier werden zugrunde liegende Prinzipien kurz und knapp eingeführt sowie fortgeschrittene Netzwerke, Vielfachzugang und Techniken für die Funkschnittstelle besprochen - drahtlose Systeme mit fester Bandbreite werden im Kontext der zuvor erläuterten Grundgedanken erklärt - besprochen wird der Entwurf und die Inbetriebnahme der Systeme

Instrumentation Reference Book

Instrumentation Reference Book
Author: Walt Boyes
Publisher: Butterworth-Heinemann
Total Pages: 929
Release: 2009-11-25
Genre: Technology & Engineering
ISBN: 0080941885

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The discipline of instrumentation has grown appreciably in recent years because of advances in sensor technology and in the interconnectivity of sensors, computers and control systems. This 4e of the Instrumentation Reference Book embraces the equipment and systems used to detect, track and store data related to physical, chemical, electrical, thermal and mechanical properties of materials, systems and operations. While traditionally a key area within mechanical and industrial engineering, understanding this greater and more complex use of sensing and monitoring controls and systems is essential for a wide variety of engineering areas--from manufacturing to chemical processing to aerospace operations to even the everyday automobile. In turn, this has meant that the automation of manufacturing, process industries, and even building and infrastructure construction has been improved dramatically. And now with remote wireless instrumentation, heretofore inaccessible or widely dispersed operations and procedures can be automatically monitored and controlled. This already well-established reference work will reflect these dramatic changes with improved and expanded coverage of the traditional domains of instrumentation as well as the cutting-edge areas of digital integration of complex sensor/control systems. Thoroughly revised, with up-to-date coverage of wireless sensors and systems, as well as nanotechnologies role in the evolution of sensor technology Latest information on new sensor equipment, new measurement standards, and new software for embedded control systems, networking and automated control Three entirely new sections on Controllers, Actuators and Final Control Elements; Manufacturing Execution Systems; and Automation Knowledge Base Up-dated and expanded references and critical standards

Novel Applications of the UWB Technologies

Novel Applications of the UWB Technologies
Author: Boris Lembrikov
Publisher: BoD – Books on Demand
Total Pages: 458
Release: 2011-08-01
Genre: Technology & Engineering
ISBN: 9533073241

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Ultra wideband (UWB) communication systems are characterized by high data rates, low cost, multipath immunity, and low power transmission. In 2002, the Federal Communication Commission (FCC) legalized low power UWB emission between 3.1 GHz and 10.6 GHz for indoor communication devices stimulating rapid development of UWB technologies and applications. The proposed book Novel Applications of the UWB Technologies consists of 5 parts and 20 chapters concerning the general problems of UWB communication systems, and novel UWB applications in personal area networks (PANs), medicine, radars and localization systems. The book will be interesting for engineers and researchers occupied in the field of UWB technology.

Wireless Communications

Wireless Communications
Author: Theodore S. Rappaport
Publisher: Cambridge University Press
Total Pages: 734
Release: 2024-02-08
Genre: Technology & Engineering
ISBN: 1009489828

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Now reissued by Cambridge University Press, the updated second edition of this definitive textbook provides an unrivaled introduction to the theoretical and practical fundamentals of wireless communications. Key technical concepts are developed from first principles, and demonstrated to students using over 50 carefully curated worked examples. Over 200 end-of-chapter problems, based on real-world industry scenarios, help cement student understanding. The book provides a thorough coverage of foundational wireless technologies, including wireless local area networks (WLAN), 3G systems, and Bluetooth along with refreshed summaries of recent cellular standards leading to 4G and 5G, insights into the new areas of mobile satellite communications and fixed wireless access, and extra homework problems. Supported online by a solutions manual and lecture slides for instructors, this is the ideal foundation for senior undergraduate and graduate courses in wireless communications.