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Using three parallel teaching approachesrigorous mathematical, graphical, and intuitive, this book offers various types of learners a practical and deep understanding of communication systems. Emphasis on the theme of cost vs. performance tradeoffs throughout the book provides a framework and motivation for all the topics examined in it. Fundamentals of frequency domain analysis are reinforced through graphical techniques and communications-oriented examples. Chapter topics cover digital baseband modulation techniques, baseband receiver design, digital bandpass modulation and demodulation techniques, multiplexing techniques, analog-to-digital conversion, basics of information theory and data compression, and basics of error control coding. For electrical engineers interested in the field of communication systems and digital communications.