Frequency Hopped Spread Spectrum Systems Have A Larger Multiple Access Capability The Effect Of Interfering Signals With Unequal Power Levels
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Frequency Hopped Spread Spectrum Systems Have A Larger Multiple Access Capability The Effect Of Interfering Signals With Unequal Power Levels
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Author : Evaggelos Geraniotis
language : en
Publisher:
Release Date : 1988
Frequency Hopped Spread Spectrum Systems Have A Larger Multiple Access Capability The Effect Of Interfering Signals With Unequal Power Levels written by Evaggelos Geraniotis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with categories.
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).
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1995
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Aeronautics categories.
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Multiple Access Capability Of Frequency Hopped Spread Spectrum Revisited An Exact Analysis Of The Effect Of Unequal Power Levels
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Author :
language : en
Publisher:
Release Date : 1988
Multiple Access Capability Of Frequency Hopped Spread Spectrum Revisited An Exact Analysis Of The Effect Of Unequal Power Levels written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with categories.
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.
Technical Reports Awareness Circular Trac
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Author :
language : en
Publisher:
Release Date : 1989
Technical Reports Awareness Circular Trac written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Science categories.
Government Reports Announcements Index
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Author :
language : en
Publisher:
Release Date : 1989
Government Reports Announcements Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Science categories.
Ultra Wideband Communications Systems
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Author : W. Pam Siriwongpairat
language : en
Publisher: John Wiley & Sons
Release Date : 2007-11-16
Ultra Wideband Communications Systems written by W. Pam Siriwongpairat and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-11-16 with Technology & Engineering categories.
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.
Government Reports Annual Index
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Author :
language : en
Publisher:
Release Date :
Government Reports Annual Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with Research categories.
Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
Fixed Broadband Wireless System Design
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Author : Harry R. Anderson
language : en
Publisher: John Wiley & Sons
Release Date : 2003-03-14
Fixed Broadband Wireless System Design written by Harry R. Anderson and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-03-14 with Technology & Engineering categories.
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
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Author : Walt Boyes
language : en
Publisher: Butterworth-Heinemann
Release Date : 2009-11-25
Instrumentation Reference Book written by Walt Boyes and has been published by Butterworth-Heinemann this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-11-25 with Technology & Engineering categories.
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
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Author : Boris Lembrikov
language : en
Publisher: BoD – Books on Demand
Release Date : 2011-08-01
Novel Applications Of The Uwb Technologies written by Boris Lembrikov and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-08-01 with Technology & Engineering categories.
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.