Science

Science
Author:
Publisher:
Total Pages: 822
Release: 1925
Genre: Science
ISBN:

Vols. for 1911-13 contain the Proceedings of the Helminothological Society of Washington, ISSN 0018-0120, 1st-15th meeting.

Principles of Spread-Spectrum Communication Systems

Principles of Spread-Spectrum Communication Systems
Author: Don Torrieri
Publisher: Springer
Total Pages: 650
Release: 2015-04-23
Genre: Technology & Engineering
ISBN: 3319140965

This textbook provides a concise but lucid explanation of the fundamentals of spread-spectrum systems with an emphasis on theoretical principles. The choice of specific topics is tempered by the author’s judgment of their practical significance and interest to both researchers and system designers. Throughout the book, learning is facilitated by many new or streamlined derivations of the classical theory. Problems at the end of each chapter are intended to assist readers in consolidating their knowledge and to provide practice in analytical techniques. This third edition includes new coverage of topics such as CDMA networks, Acquisition and Synchronization in DS-CDMA Cellular Networks, Hopsets for FH-CDMA Ad Hoc Networks, and Implications of Information Theory, as well as updated and revised material on Central Limit Theorem, Power Spectral Density of FH/CPM Complex Envelopes, and Anticipative Adaptive-Array Algorithm for Frequency-Hopping Systems.

Spread Spectrum and CDMA

Spread Spectrum and CDMA
Author: Valeri P. Ipatov
Publisher: John Wiley & Sons
Total Pages: 400
Release: 2005-05-06
Genre: Science
ISBN: 9780470091784

Spread spectrum and CDMA are cutting-edge technologies widely used in operational radar, navigation and telecommunication systems and play a pivotal role in the development of the forthcoming generations of systems and networks. This comprehensive resource presents the spread spectrum concept as a product of the advancements in wireless IT, shows how and when the classical problems of signal transmission/processing stimulate the application of spread spectrum, and clarifies the advantages of spread spectrum philosophy. Detailed coverage is provided of the tools and instruments for designing spread spectrum and CDMA signals answering why a designer will prefer one solution over another. The approach adopted is wide-ranging, covering issues that apply to both data transmission and data collection systems such as telecommunications, radar, and navigation. Presents a theory-based analysis complemented by practical examples and real world case studies resulting in a self-sufficient treatment of the subject Contains detailed discussions of new trends in spread spectrum technology such as multi-user reception, multicarrier modulation, OFDM, MIMO and space-time coding Provides advice on designing discrete spread spectrum signals and signal sets for time-frequency measuring, synchronization and multi-user communications Features numerous Matlab-based problems and other exercises to encourage the reader to initiate independent investigations and simulations This valuable text provides timely guidance on the current status and future potential of spread spectrum and CDMA and is an invaluable resource for senior undergraduates and postgraduate students, lecturers and practising engineers and researchers involved in the deployment and development of spread spectrum and CDMA technology. Supported by a Companion website on which instructors and lecturers can find a solutions manual for the problems and Matlab programming, electronic versions of some of the figures and other useful resources such as a list of abbreviations.

Fundamentals of Spread Spectrum Modulation

Fundamentals of Spread Spectrum Modulation
Author: Rodger E. Ziemer
Publisher: Springer Nature
Total Pages: 79
Release: 2022-06-01
Genre: Technology & Engineering
ISBN: 3031016742

This lecture covers the fundamentals of spread spectrum modulation, which can be defined as any modulation technique that requires a transmission bandwidth much greater than the modulating signal bandwidth, independently of the bandwidth of the modulating signal. After reviewing basic digital modulation techniques, the principal forms of spread spectrum modulation are described. One of the most important components of a spread spectrum system is the spreading code, and several types and their characteristics are described. The most essential operation required at the receiver in a spread spectrum system is the code synchronization, which is usually broken down into the operations of acquisition and tracking. Means for performing these operations are discussed next. Finally, the performance of spread spectrum systems is of fundamental interest and the effect of jamming is considered, both without and with the use of forward error correction coding. The presentation ends with consideration of spread spectrum systems in the presence of other users. For more complete treatments of spread spectrum, the reader is referred to [1, 2, 3].

Acousto-optic Correlators and Spectrum Analyzers

Acousto-optic Correlators and Spectrum Analyzers
Author: Iurii Vasilevich Egorov
Publisher: SPIE Press
Total Pages: 190
Release: 1997
Genre: Computers
ISBN: 9780819422583

This volume aims to enhance the algorithms for acousto-optic correlative and spectral signal processing and extend their applications. The text assumes a basic familiarity with optical methods of information processing.

Full-Spectrum Thinking

Full-Spectrum Thinking
Author: Bob Johansen
Publisher: Berrett-Koehler Publishers
Total Pages: 264
Release: 2020-03-02
Genre: Business & Economics
ISBN: 1523087536

Leading futurist Bob Johansen shows how a new way of thinking, enhanced by new technologies, will help leaders break free of limiting labels and see new gradients of possibility in a chaotic world. The future will get even more perplexing over the next decade, and we are not ready. The dilemma is that we're restricted by rigid categorical thinking that freezes people and organizations in neatly defined boxes that often are inaccurate or obsolete. Categories lead us toward certainty but away from clarity, and categorical thinking moves us away from understanding the bigger picture. Sticking with this old way of thinking and seeing isn't just foolish, it's dangerous. Full-spectrum thinking is the ability to seek patterns and clarity outside, across, beyond, or maybe even without any boxes or categories while resisting false certainty and simplistic binary choices. It reveals our commonalities that are hidden in plain view. Bob Johansen lays out the core concepts of full-spectrum thinking and reveals the role that digital media—including gameful engagement, big-data analytics, visualization, blockchain, and machine learning—will play in facilitating and enhancing it. He offers examples of broader spectrums and new applications in a wide range of areas that will become possible first, then mandatory. This visionary book provides powerful ways to make sense of new opportunities and see the world as it really is.

Organic Chemistry

Organic Chemistry
Author: SOLOMONS.
Publisher: John Wiley & Sons
Total Pages: 1235
Release: 2022-12-29
Genre:
ISBN: 1119889448