This detailed introduction presents the theory of digital modulation and coding underpinning the modern design of modems for telecommunications. From baseband and passband modulation and demodulation to sequence estimation, turbo codes, and the Viterbi algorithm, a wide range of key topics is covered, whilst end-of-chapter exercises test students' understanding throughout.
Of related interest … Digital Telephony John Bellamy "As a departure from conventional treatment of communication theory, the book stresses how systems operate and the rationale behind their design, rather than presenting rigorous analytical formulations." —Telecommunications Journal Both a reference for telecommunication engineers and a text for graduate level engineering and computer science students, this book provides an introduction to all aspects of digital communication, with emphasis on voice digitization, digital transmission, digital switching, network synchronization, network control, and network analysis. Its aim is to present system level design considerations, and then relate the specific equipment to telephone networks around the world, particularly North America. 526 pp. (0 471-08089-6) 1982 A Reference Manual for Telecommunications Engineering Roger L. Freeman Here’s a comprehensive reference for those who design, build, purchase, use, or maintain telecommunications systems, offering the only system design database devoted exclusively to the field. It pulls together a vast amount of information from such diverse sources as CCITT/CCIR, EIA, US Military Standards and Handbooks, NBS, BTL/ATT, REA, and periodicals and monographs published by over twenty principal manufacturers. Covers telephone traffic, transmission factors in telephony, outside plant-metallic pair systems, noise and modulation, radio-frequency data and regulatory information, facsimile transmission, and more. 1504 pp. (0 471-86753-5) 1985
The long paper which gives the title to this collection and which has never before been published as paperback was initially an attempt to promote international academic understanding. The Economics Department at the London School of Economics had arranged a colloquy between two groups of Russian and British economists; and where the author asked to contribute a general survey of the present state of economic theory as taught in Western centers. For reasons, which are explained in the opening section, the author decided to adopt an historical approach; and the notes on which the present paper is based were the result.The remainders of the papers have as their common denominator a continuing interest in the history of economic thought. Beginning with a lengthy critique of Schumpeter's magisterial History of Economic Analysis, they range from an appraisal of Bentham's continuing relevance to a review of Robertson's Lectures on Economic Principles, with some special attention to John Stuart Mill both as a human being and as an economist. They have been written at various times in the last thirty-five years; and minute scrutiny, if such were thought to be worthwhile--which of course it is not--might detect some variations of emphasis, particularly perhaps in the implicit valuations of Marshall and his contribution, in the papers on Wicksteed and Schumpeter's History respectively. But in spite of a certain shift of perspective here, the author thought it worthwhile to attempt substantial redrafting.Apart from the correction of obvious inelegances or actual errors, the excision of some duplicating quotations and, in a few cases, the addition of supplementary material and references, the papers are reproduced as originally written. In each instance the author has given footnote acknowledgements of the place of original publication.
This book uses a practical approach in the application of theoretical concepts to digital communications in the design of software defined radio modems. This book discusses the design, implementation and performance verification of waveforms and algorithms appropriate for digital data modulation and demodulation in modern communication systems. Using a building-block approach, the author provides an introductory to the advanced understanding of acquisition and data detection using source and executable simulation code to validate the communication system performance with respect to theory and design specifications. The author focuses on theoretical analysis, algorithm design, firmware and software designs and subsystem and system testing. This book treats system designs with a variety of channel characteristics from very low to optical frequencies. This book offers system analysis and subsystem implementation options for acquisition and data detection appropriate to the channel conditions and system specifications, and provides test methods for demonstrating system performance. This book also: Outlines fundamental system requirements and related analysis that must be established prior to a detailed subsystem design Includes many examples that highlight various analytical solutions and case studies that characterize various system performance measures Discusses various aspects of atmospheric propagation using the spherical 4/3 effective earth radius model Examines Ionospheric propagation and uses the Rayleigh fading channel to evaluate link performance using several robust waveform modulations Contains end-of-chapter problems, allowing the reader to further engage with the text Digital Communications with Emphasis on Data Modems is a great resource for communication-system and digital signal processing engineers and students looking for in-depth theory as well as practical implementations.
Deliberately eschewing disciplinary and temporal boundaries, this volume makes a major contribution to the de-traditionalization of political thinking within the discourses of international relations. Collecting the works of twenty-five theorists, this Ashgate Research Companion engages some of the most pressing aspects of political thinking in world politics today. The authors explore theoretical constitutions, critiques, and affirmations of uniquely modern forms of power, past and present. Among the themes and dynamics examined are textual appropriation and representation, materiality and capital formation, geopolitical dimensions of ecological crises, connections between representations of violence and securitization, subjectivity and genderization, counter-globalization politics, constructivism, biopolitics, post-colonial politics and theory, as well as the political prospects of emerging civic and cosmopolitan orders in a time of national, religious, and secular polarization. Radically different in their approaches, the authors critically assess the discourses of IR as interpretive frames that are indebted to the historical formation of concepts, and to particular negotiations of power that inform the main methodological practices usually granted primacy in the field. Students as well as seasoned scholars seeking to challenge accepted theoretical frameworks will find in these chapters fresh insights into contemporary world-political problems and new resources for their critical interrogation.
This Edition Includes Several New Topics To Make The Coverage More Comprehensive And Contemporary. Various Concepts And Issues Involved In Economic Analysis Have Been Thoroughly Explained And Illustrated With The Help Of Examples Drawn From Our Daily Experience. The Inter-Relationships Between Different Concepts Have Been Suitably Highlighted. The Application Of Economic Tools For Problem Solving Has Been Emphasised. Review Questions And Exercises Have Been Included In Each Chapter To Help Students To Test Their Understanding And Prepare Confidently For Examinations.The Book Would Serve As Excellent Text For B.A., B.Com And Business Administration Students. Candidates Preparing For Various Professional And Competitive Examinations Would Also Find It Very Useful.
This collection offers a timely opportunity to re-examine both the coherence of the concept of an ‘early Enlightenment’, and the specific contribution of natural law theories to its formation. It reassesses the work of major thinkers such as Grotius, Hobbes, Locke, Malebranche, Pufendorf and Thomasius, and evaluates the appeal and importance of the discourse of natural jurisprudence both to those working inside conventional educational and political structures and to those outside.
Theory of Superconductivity: From Weak to Strong Coupling leads the reader from basic principles through detailed derivations and a description of the many interesting phenomena in conventional and high-temperature superconductors. The book describes physical properties of novel superconductors, in particular, the normal state, superconducting crit
