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Communications technologies increasingly pervade our everyday lives, yet the underlying principles are a mystery to most. Even among engineers and technicians, understanding of this complex subject remains limited. However, there is undeniably a growing need for all technology disciplines to gain intimate awareness of how their fields are affected by a more densely networked world. The computer science field in particular is profoundly affected by the growing dominance of communications, and computer scientists must increasingly engage with electrical engineering concepts. Yet communications technology is often perceived as a challenging subject with a steep learning curve.To address this need, the authors have transformed classroom-tested materials into this accessible textbook to give readers an intimate understanding of fundamental communications concepts. Readers are introduced to the key essentials, and each selected topic is discussed in detail to promote mastery. Engineers and computer scientists will gain an understanding of concepts that can be readily applied to their respective fields, as well as provide the foundation for more advanced study of communications. Provides a thorough grounding in the basics by focusing on select key conceptsClarifies comprehension of the subject via detailed explanation and illustrationHelps develop an intuitive sense of both digital and analog principlesIntroduces key broadcasting, wireless and wired systemsHelps bridge the knowledge gap between software and electrical engineeringRequires only basic calculus and trigonometry skillsClassroom tested in undergraduate CS and EE programsCommunications Engineering by Lee, Chiu, and Lin will give advanced undergraduates in computer science and beginning students of electrical engineering a rounded understanding of communications technologies. The book also serves as a key introduction to specialists in industry, or anyone who desires a working understanding of communications technologies.
Richard Chia Tung Lee, Dept. of Computer Science, National Chi Nan University, Taiwan. Mao-Ching Chiu, Dept. of Electrical Engineering, National Chung Cheng University, Taiwan.Jung-Shan Lin, Dept. of Electrical Engineering, National Chi Nan University, Taiwan.
Preface vii1 An Overview of Computer Communications 1Further Reading 32 Signal Space Representation 52.1 The Vector Space 62.2 The Signal Space 72.3 Summary 14Further Reading 15Exercises 153 Fourier Representations of Signals 173.1 The Fourier Series 203.2 Cosine-only Expansion of Fourier Series 333.3 Fourier Series in Complex Exponentials 373.4 The Fourier Transform 483.5 Physical Meaning of Fourier Transform 543.6 Properties of the Fourier Transform 563.7 Fourier Transform Representations for Periodic Signals 643.8 The Discrete Fourier Transform 683.9 The Inverse Discrete Fourier Transform 773.10 Physical Meaning of the Discrete Fourier Transform 78Further Reading 92Exercises 924 Analog Modulation Techniques 974.1 Amplitude Modulation 984.2 Double-sideband Suppressed Carrier (DSB-SC) 1074.3 Single-sideband (SSB) Modulation 1114.4 Frequency Modulation (FM) 1194.5 Superheterodyne AM and FM Receivers 1274.6 Analog Modulation with Frequency Division Multiplexing 1314.7 Concluding Remarks 132Further Reading 133Exercises 1335 Digital Modulation Techniques 1355.1 Baseband Pulse Transmission 1365.2 Amplitude-shift Keying (ASK) 1415.3 Binary Phase-shift Keying (BPSK) 1465.4 Binary Frequency-shift Keying (FSK) 1515.5 Quadriphase-shift Keying (QPSK) 1575.6 Quadrature Amplitude Modulation 1655.7 Orthogonal Frequency Division Multiplexing (OFDM) 1695.8 OFDM in Wireless Local Area Networks 1815.9 Digital Audio Broadcast Using OFDM and TDMA 1835.10 The Role of Inner Product in Digital Modulation 1855.11 Review of Digital Modulation Techniques 186Further Reading 187Exercises 1876 Multiple-access Communications 1896.1 Frequency-division Multiple Access (FDMA) 1906.2 Time-division Multiple Access (TDMA) 1926.3 Code-division Multiple Access (CDMA) 1966.4 Carrier-sense Multiple Access (CSMA) 2046.5 The Multiplexing Transmission Problem 205Further Reading 206Exercises 2067 Spread-spectrum Communications 2097.1 The Basic Concept of Spread-spectrum 2097.2 Baseband Transmission for Direct-sequence Spread-spectrum (DSSS) Communications 2127.3 BPSK Modulation for DSSS 2187.4 Pseudo-random Binary Sequence 2207.5 Frequency-hopping Spread-spectrum 2227.6 Application of Spread-spectrum Techniques to Multiple-access Systems 224Further Reading 230Exercises 2308 Source Coding and Channel Coding 2318.1 Average Codeword Length of Source Coding 2338.2 Prefix Codes 2348.3 Huffman Coding 2358.4 Channel Coding 2378.5 Error-correcting Capability and Hamming Distance 2378.6 Hamming Codes 2398.7 Convolutional Codes 243Further Reading 250Exercises 250Appendix 253Bibliography 255Index 257
San Kyeong, Michael G. Pecht, South Korea) Kyeong, San (University of Maryland, USA; Seoul National University of Seoul, USA) Pecht, Michael G. (University of Maryland, USA; University of Wisconsin at Madison