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Cellular Network Planning

DC/AC Electrical Fundamentals

Modulation Theory

Modulation Theory

In recent years a considerable amount of effort has been devoted both in industry and academia towards the design performance analysis and evaluation of modulation schemes to be used in wireless and optical networks towards the development of the next and future generations of mobile cellular communication systems. Modulation Theory is intended to serve as a complementary textbook for courses dealing with Modulation Theory or Communication Systems but also as a professional book for engineers who need to update their knowledge in the communications area. The modulation aspects presented in the book use modern concepts of stochastic processes such as autocorrelation and power spectrum density which are novel for undergraduate texts or professional books and provides a general approach for the theory with real life results applied to professional design. This text is suitable for the undergraduate as well as the initial graduate levels of Electrical Engineering courses and is useful for the professional who wants to review or get acquainted with the a modern exposition of the modulation theory. The books covers signal representations for most known waveforms Fourier analysis and presents an introduction to Fourier transform and signal spectrum including the concepts of convolution autocorrelation and power spectral density for deterministic signals. It introduces the concepts of probability random variables and stochastic processes including autocorrelation cross-correlation power spectral and cross-spectral densities for random signals and their applications to the analysis of linear systems. This chapter also includes the response of specific non-linear systems such as power amplifiers. The book presents amplitude modulation with random signals including analog and digital signals and discusses performance evaluation methods presents quadrature amplitude modulation using random signals. Several modulation schemes are discussed including SSB QAM ISB C-QUAM QPSK and MSK. Their autocorrelation and power spectrum densities are computed. A thorough discussion on angle modulation with random modulating signals along with frequency and phase modulation and orthogonal frequency division multiplexing is provided. Their power spectrum densities are computed using the Wiener-Khintchin theorem.

GBP 35.99
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Electronic Devices and Circuit Fundamentals

Energy Conservation Guidebook

Energy Conservation Guidebook

Efficient energy management and effective conservation procedures have been very important considerations for our society for many years. An oil embargo in the 1970s and early 1980s brought about a new awareness of energy conservation. Because of various factors like loss of tax credits and efficiency standards imposed by the government public interest dropped considerably in regard to energy conservation. A revival in energy conservation among the general public occurred following the Persian Gulf War in the early 1990s. What does the 21st century hold? Conflicts in the Middle East high prices for petroleum and increasing population worldwide will all be significant influences on energy and its conservation. Considerable discussion of climate change global warming and increased concerns in regard to our electricity supply have provided motivation for building energy demand to be more flexible. Energy Management and Conservation Fourth Edition provides a very practical discussion of how energy can be managed and saved in most types of buildings. This edition not only updates the previous edition but adds updated content concerning energy cost reduction/going green to improve the environment. The authors of this book have written several books that use the systems approach. Through the use of the systems approach the reader will be able to grasp how different parts of a building fit together to form a unit that uses energy efficiently. This text provides a thorough and practical discussion of the operation of systems that are found in most types of buildings. Each system is discussed with energy management and conservation in mind/going green to save money and improve the environment. There are many ways to manage a building to accomplish efficient energy conservation. Several of the chapters have checklists at the end to summarize ways of conserving energy that relate to the chapter. Important changes in this edition include coverage of governmental requirements from agencies such as Environmental Protection Agency (EPA) United States Department of Energy (USDOE) and American Society of Refrigerating Heating and Air-Conditioning Engineering (ASHRAE) updated as of 2022 standards. Instrumentation updates include types of sensors and the concept of smart devices such as meters. Addition of computer building maintenance management systems and new updates for renewable energy resources are included. Enhancements to existing systems content (such as variable frequency drives for pumps) have been carefully added. | Energy Conservation Guidebook

GBP 130.00
1