Electronic Communication Systems: A Comprehensive Guide by Wayne Tomasi
Electronic Communication Systems: A Comprehensive Guide by Wayne Tomasi
Electronic communication systems are devices and systems that transmit and receive information using electromagnetic signals. They are used for various purposes, such as telephony, radio, television, data transmission, satellite communication, and wireless networking. Electronic communication systems can be classified into analog and digital systems, depending on the type of modulation and demodulation techniques used to encode and decode the information.
One of the most popular and authoritative books on electronic communication systems is Electronic Communication Systems: Fundamentals Through Advanced by Wayne Tomasi. This book provides a comprehensive and modern coverage of the field of digital communications, as well as a solid foundation in the principles of analog communications. The book covers topics such as signal analysis and mixing, oscillators, phase-locked loops, frequency synthesizers, amplitude modulation, single-sideband communications, angle modulation, digital modulation, digital transmission, optical fiber transmission, electromagnetic wave propagation, antennas and waveguides, telephone systems, cellular systems, data communications and networking, microwave radio communications, satellite communications, and more. The book also includes numerous examples, problems, and exercises to help students master the concepts and applications of electronic communication systems.
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The book is suitable for undergraduate and graduate students of electrical engineering, electronics engineering, and communication engineering. It is also a valuable reference for professionals and practitioners in the field of electronic communication systems.The following is a continuation of the article:
Chapter 5: Digital Modulation
Digital modulation is the process of converting digital data into analog signals that can be transmitted over a communication channel. Digital modulation techniques can be classified into two main categories: amplitude shift keying (ASK), and angle shift keying (ASK). ASK techniques vary the amplitude of a carrier signal according to the digital data, while ASK techniques vary the phase or frequency of a carrier signal according to the digital data. Some of the common ASK techniques are on-off keying (OOK), amplitude modulation (AM), and quadrature amplitude modulation (QAM). Some of the common ASK techniques are binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), frequency shift keying (FSK), and minimum shift keying (MSK).
The advantages of digital modulation over analog modulation are higher noise immunity, higher spectral efficiency, higher data rate, and easier implementation. However, digital modulation also has some disadvantages, such as higher bandwidth requirement, higher power consumption, and higher complexity. The choice of a suitable digital modulation technique depends on various factors, such as the channel characteristics, the data rate, the bit error rate, the power efficiency, and the cost.
The book explains the principles and applications of various digital modulation techniques in detail. It also discusses the performance analysis of digital modulation systems in terms of bit error rate, signal-to-noise ratio, bandwidth efficiency, and power efficiency. The book also introduces some advanced topics in digital modulation, such as orthogonal frequency division multiplexing (OFDM), spread spectrum modulation, and multiple-input multiple-output (MIMO) systems. 29c81ba772
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