Author: Rudolf W. BurgiPublisher:
ISBN:
Category :
Languages : en
Pages : 62
Book Description
Synchronization and Demodulation of Differential Phase Shift Keyed Signals with Linear Surface Acoustic Wave Devices
Author: Rudolf W. BurgiMasters Theses in the Pure and Applied Sciences
Author: Wade H. ShaferPublisher: Springer Science & Business Media
ISBN: 1468451979
Category : Science
Languages : en
Pages : 407
Book Description
Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1 957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 29 (thesis year 1984) a total of 12,637 theses titles from 23 Canadian and 202 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work. While Volume 29 reports theses submitted in 1984, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time.
The Imperfectly-timed Demodulation of Differential Phase Shift Keyed Signals
Author: Ronald J. HuffPublisher:
ISBN:
Category :
Languages : en
Pages : 70
Book Description
The effects of bit synchronization error on the performance of receivers used to demodulate differential phase shift keyed (DPSK) signals are analyzed. In the two cases of interest considered, the carrier signal is bi-phase modulated with either the differentially encoded (binary) data stream or the modulo two sum of the encoded data stream and a binary pseudo-noise (PN) signal. The bit timing error is assumed to be Gaussian distributed. Since the effects of both non-zero timing offset and random jitter are investigated, the results provide an adequate basis for the design of synchronizers as employed, for example, in time division multiple access systems. (Author).
Surface Acoustic Wave Devices for Mobile and Wireless Communications, Four-Volume Set
Author: Colin CampbellPublisher: Academic Press
ISBN: 9780121573409
Category : Art
Languages : en
Pages : 660
Book Description
Written for readers with or without surface acoustic wave (SAW) experience, this book covers a wide range of SAW filter- and device-design techniques as well as applications to mobile and wireless circuitry. It provides numerous references and worked examples on SAW devices to highlight various design aspects, and contains illustrations from many leading electronic companies around the world. The first half of the book covers the principles of SAW devices. The secondhalf focuses on applications to the mobile/wireless field, including SAW devices for antenna duplexers, RF and IF filters for cellular cordless phones, front-end filters for wireless transceivers, fixed and tunable oscillators, filters for on-board satellite communications, as well as coding and convolvers for indoor/outdoor spread-spectrum communications. Surface Acoustic Wave Devices for Mobile and Wireless Communications serves as an excellent sourcebook for engineers and designers with some SAW background, or for technical staff with no prior knowledge of SAW devices who need to know how this technology can help their products. It can be used as a textbook for senior and graduate students engaged in the study of signal processing techniques and systems for mobile communications. Key Features * First SAW text applied to mobile and wireless communications * Written by an award-winning researcher with over 20 years of SAW device experience * Presents the theory and design of major SAW devices for mobile/wireless communications as applied to some of the major telecommunication standards * Accessible to both engineering and scientific readers with or without prior SAW device knowledge
Quasi-Coherent Demodulation of Phase-Shift-Keyed Signals
Author: A. GhoshQuasi-coherent Demodulation of Phase-shift-keyed Signals
Author: Amitabha GhoshPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
The major part of the work described in the thesis is a study of a novel technique for the demodulation of two level phase shift keyed signals. Its advantage over conventional coherent demodulation methods is that it uses a free running oscillator as the local oscillator in the receiver, which is not locked to the transmitted carrier signal. Thus this novel system does not require the complex synchronisation techniques used in conventional phase shift keyed demodulators. This new demodulator like conventional coherent demodulators has not got the fixed speed disadvantage of differential phase shift keying. This new demodulator also referred to as a Quasi-Coherent demodulator has been characterised both theoretically and experimentally and compared with conventional coherent and differential phase shift-keyed systems. The possibility of extending this technique to multiphase phase shift keyed system is also discussed. The performance of a multilevel coherent phase shift keyed system in the presence of interference can be predicted by computing the exact mathematical equation for the error rate. In the thesis an approximate, but quick and simple method has been developed to, predict the performance of multilevel coherent phase shift keyed system from the well known result of a two level coherent phase shift keyed system. In all the interference analysis so far done by other authors, it is assumed that the reference at the receiver is coherent with the received signal. However, it is evident that in the presence of a strong interference, a phase locked loop derived reference will in general be coherent with the composite signal (i.e. signal plus interference plus noise) and not with the signal as assumed by previous authors. The effect of such a reference i.e. coherent with the composite signal on the performance of a two level system has been discussed fully in chapter four. The performance of a digital system also depends on the receiving filter characteristic and on the sampling jitter that is inevitably present in the sampling pulse in the decision circuitry of the receiver. The effect of these two factors on the performance of a two level coherent phase shift keyed system has been fully discussed in chapter five.
Coherent Phase - Sift - Keyed Demodulation Using Derived Synchronization
Author: Richard F. MackPublisher:
ISBN:
Category : Phase modulation
Languages : en
Pages : 138
Book Description
Imperfect Differential Detection of a Biphase Modulated Signal
Author: Thomas William MillerPublisher:
ISBN:
Category : Differential equations
Languages : en
Pages : 194
Book Description
International Aerospace Abstracts
Author: NASA Patent Abstracts Bibliography
Author: United States. National Aeronautics and Space Administration. Scientific and Technical Information ProgramPublisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 632
Book Description