Electronic Communications System: Fundamentals Through Advanced, Fifth Edition

The purpose of this book is to introduce the reader to the basic concepts of traditional analog electronic communications systems and to expand the reader's knowledge of more modern digital, optical fiber, microwave, satellite, data, and cellular telephone communications systems. The book was written so that a reader with previous knowledge in basic electronic principles and an understanding of mathematics through the fundamental concepts of calculus will have little trouble understanding the topics presented. Within the text, there are numerous examples that emphasize the most important concepts. Questions and problems are included at the end of each chapter and answers to selected problems are provided at the end of the book. This edition of Electronic Communications Systems: Fundamentals Through Advancedprovides a modern, comprehensive coverage of the field of electronic communications. Although nothing has been omitted from the previous edition, there are several significant additions, such as three new chapters on telephone circuits and systems, two new chapters on cellular and PCS telephone systems, and three new chapters on the fundamental concepts of data communications and networking. In addition, numerous new figures have been added and many figures have been redrawn. The major topics included in this edition are as follows. Chapter 1 introduces the reader to the basic concepts of electronic communications systems and includes a new section on power measurements using dB and dBm. This chapter defines modulation and demodulation and describes the electromagnetic frequency spectrum. Chapter 1 also defines bandwidth and information capacity and how they relate to one another, and provides a comprehensive description of noise sources and noise analysis. Chapters 2 and 3 discuss signals, signal analysis, and signal generation using discrete and linear-integrated circuits. Chapter 3 gives a comprehensive coverage of phase-locked loops. Chapters 4 through 8 describe analog communications systems, such as amplitude modulation AM , frequency modulation FM , phase modulation PM , and single sideband SSB . A comprehensive mathematical and theoretical description is given for each modulation technique and the basic components found in analog transmitters and receivers are described in detail. Chapter 9 discusses the fundamental concepts of digital modulation, including comprehensive descriptions of amplitude-shift keying ASK , frequency-shift keying FSK , phase-shift keying PSK , quadrature amplitude modulation QAM , and differential phase-shift keying DPSK . Chapter 9 introduces the student to trellis code modulation and gives a comprehensive description of probability of error, bit error rate, and error performance. Chapters 10 and 11 describe the basic concepts of digital transmission and multiplexing. Chapter 10 describes pulse code modulation, while Chapter 11 describes time-division multiplexing of PCM-encoded signals and explains the North American Digital Hierarchy and the North American FDM Hierarchy. Wavelength division multiplexing of light waves is also introduced in Chapter 11. Chapters 12 through 15 describe the fundamental concepts of electromagnetic waves, electromagnetic wave propagation, metallic and optical fiber transmission lines, free-space wave propagation, and antennas. Chapters 16 through 18 give a comprehensive description of telephone instruments, signals, and wireline systems used in the public telephone network. Chapters 19 and 20 describe the basic concepts of wireless telephone systems, including cellular and PCS. Chapters 21 through 23 introduce the fundamental concepts of data communications circuits and describe basic networking fundamentals, such as topologies, error control, protocols, hardware, accessing techniques, and network architectures. Chapters 24 through 26 describe the fundamental concepts of terrestrial and satellite microwave-radio communications. Chapter 24 describes analog terrestrial microwave systems; Chapters 25 and 26 describe digital satellite systems. Appendix A describes the Smith Chart.

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