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Digital Communications

For senior level elective courses in digital communications or first-year graduate courses in digital communications (with an emphasis on the discrete-time processing algorithms). Take an exciting non-traditional approach to the traditional topic of digital communications! Rice uses the principles of discrete-time signal processing to introduce and analyze digital communications - connecting continuous-time and discrete-time ideas. Often neglected topics such as carrier phase synchronization, symbol timing synchronization, pulse shaping issues, and channelization are derived from basic principles in the discrete-time domain. Extensive details on implementation are also included.
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Table of Contents

Contents 1 Introduction 1.1 A brief History of Communications 1.2 Basics of Wireless Communications 1.3 Digital Communications 1.4 Why Discrete-Time Processing is so Popular 1.5 Organization of the Text 1.6 Notes and References 2 Signals and Systems 1: A Review of the Basics 2.1 Introduction 2.2 Signals 2.2.1 Continuous-Time Signals 2.2.2 Discrete-Time Signals 2.3 Systems 2.3.1 Continuous-Time Systems 2.3.2 Discrete- Time Systems 2.4 Frequency Domain Characterization 2.4.1 Laplace Transform 2.4.2 Continuous-Time Fourier Transform 2.4.3 Z Transform 2.4.4 Discrete-Time Fourier Transform 2.5 The Discrete Fourier Transform 2.6 The Relationship Between Discrete-Time and Continuous- Time Systems 2.6.1 The Sampling Theorem 2.6.2 Discrete-Time Processing of Continuous-Time Signals 2.7 Discrete-Time Processing of Bandpass Signals 2.8 Notes and References 2.9 Exercises 3 Signals and Systems 2: Some Useful Discrete-Time Techniques for Digital Communications 3.1 Introduction 3.2 Multirate 3.2.1 Impulse Train Sampling 3.2.2 Downsampling 3.2.3 Upsampling 3.2.4 The Noble Identities 3.2.5 Polyphase Filterbanks 3.3 Discrete-Time Filters Design Methods 3.3.1 IIR Filter Design 3.3.2 FIR Filter Design 3.3.3 Two Important Filters: The Differentiator and the Intergrator 3.4 Notes and References 3.5 Exercises 4 A Review of Probability Theory 4.1 Basic Definitions 4.2 Gaussian Random Variables 4.2.1 Density and Distribution Functions 4.2.2 Product Moments 4.2.3 BivariateGaussian Distribution 4.2.4 Functions of Random Variables 4.3 Multivariate Gaussian Random Variables 4.4 Random Sequences 4.4.1 Power Spectral Density 4.4.2 Random Sequences and Discrete-Time LTI Systems 4.5 Additive White Gaussian Noise 4.5.1 Continuous Time Random Processes 4.5.2 The White Gaussian Random Process: A Good Model For Noise 4.5.3 White Gaussian Noise in a sampled data System 4.6 Notes and References 4.7 Exercises 5 Linear Modulation 1: Demodulation, and Detection 5.1 Signal Spaces 5.1.1 Definitions 5.1.2 The Synthesis Equation and Linear Modulation 5.1.3 The Analysis Equation and Detection 5.1.4 The matched Filter 5.2 M-ary Baseband Pulse Amplitude Modulation (PAM) 5.2.1 Continuous-Time Realization 5.2.2 Discrete-Time Realization 5.3 M-ary Quadrature Amplitude Modulation (MQAM) 5.3.1 Continuous-Time Realization 5.3.2 Discrete-Time Realization 5.4 Offset QPSK 5.5 Multicarrier 5.6 Maximum Likelihood detection 5.6.1 Introduction 5.6.2 Preliminaries 5.6.3 Maximum Likelihood Decision Rule 5.7 Notes and References 5.8 Exercises 6 Linear Modulation 2: Performance 6.1 Performance of PAM 6.1.1 Bandwidth 6.1.2 Probability of Error 6.2 Performance of QAM 6.2.1 Bandwidth 6.2.2 Probability of Error 6.3 Comparisons 6.4 Link Budgets 6.4.1 Received Power and The Friis equation 6.4.2 Equivalent Noise Temperature and Noise Figure 6.4.3 The Link Budget Equation 6.5 Projection White Noise Onto An Orthonormal Basis Set 6.6 Notes and References 6.7 Exercises 7 Carrier Phase Synchronization 7.1 Basics Problem Formulation 7.2 Carrier Phase Synchronization for QPSK 7.2.1 A Heuristic Phase Error Detector 7.2.2 The Maximum Likelihood Phase Error Detector 7.2.3 Examples 7.3 Carrier Phase Synchronization for BPSK 7.4 Carrier Phase Synchronization for MQAM 7.5 Carrier Phase Synchronization for Offset QPSK 7.6 Carrier Phase Synchronization for BPSK and QPSK Using Continuous-Time-Techniques 7.7 Phase Ambiguity Resolution 7.7.1 Unique Word 7.7.2 Differential Encoding 7.8 Maximum Likelihood Phase Estimation 7.8.1 Preliminaries 7.8.2 Carrier Phase Estimation 7.9 Notes and References 7.10 Exercises 8 Symbol Timing Synchronization 8.1 Basic Problem Formulation 8.2 Continuous-Time Techniques for M-ary PAM 8.3 Continuous-Time Techniques for MQAM 8.4 Discrete-Time Techniques for M-ary PAM 8.4.1 Timing Error Detectors 8.4.2 Interpolation 8.4.3 Interpolation Control 8.4.4 Examples 8.5 Discrete-Time Techniques for MQAM 8.6 Discrete-Time Techniques for Offset QPSK 8.7 Dealing with Transition Density: A Parctical Consideration 8.8 Maximum Likelihood Estimation 8.8.1 Preliminaries 8.2.2 Symbol Timing Estimation 8.9 Notes and References 8.10 Exercises 9 System Components 9.1 The Continuous-Time Discrete-Time Interface 9.1.1 Analog-to-Digital Converter 9.2.2 Digital-to-Analog Converter 9.2 Discrete-Time Oscillators 9.2.1 Discrete Oscillators Based on LTI Systems 9.2.2 Direct Digital Synthesizer 9.3 Resampling Filters 9.3.1 CIC and Hogenauer Filters 9.3.2 Half-Band Filters 9.3.3 Arbitrary Resampling Using Polyphase Filterbanks 9.4 CoRDiC: Coordinate Rotation Digital Computer 9.4.1 Rotations: Moving on a Circle 9.4.2 Moving Along Other Shapes 9.5 Automatic gain Control 9.6 Notes and References 9.7 Exercise 10 System Design 10.1 Advance Discrete-Time Architectures 10.1.1 Discrete-Time Architectures for QAM Modulators 10.1.2 Discrete-Time Architectures for QAM Demodulators 10.1.3 Putting It all Together 10.2 Channelization 10.2.1 Continuous-Time Techniques: The Superheterodynd Receiver 10.2.2 Discrete-Time Techniques Using Multirate Processing 10.3 Notes and References 10.4 Exercises

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