数字信号处理 应用MATLABPDF电子书下载

1 INTRODUCTION 1

Overview of Digital Signal Processing 2

A Few Words about MATLAB？ 5

2 DISCRETE-TIME SIGNALS AND SYSTEMS 7

Discrete-time Signals 7

Discrete Systems 20

Convolution 22

Difference Equations 29

Problems 35

3 THE DISCRETE-TIME FOURIER ANALYSIS 40

The Discrete-time Fourier Transform(DTFT) 40

The Properties of the DTFT 47

The Frequency Domain Representation of LTI Systems 53

Sampling and Reconstruction of Analog Signals 60

Problems 74

The Bilateral z-Transform 80

4 THE z-TRANSFORM 80

Important Properties of the z-Transform 84

Inversion of the z-Transform 89

System Representation in the z-Domain 95

Solutions of the Difference Equations 105

Problems 111

5 THE DISCRETE FOURIER TRANSFORM 116

The Discrete Fourier Series 117

Sampling and Reconstruction in the z-Domain 124

The Discrete Fourier Transform 129

Properties of the Discrete Fourier Transform 139

Linear Convolution using the DFT 154

The Fast Fourier Transform 160

Problems 172

6 DIGITAL FILTER STRUCTURES 182

Basic Elements 183

IIR Filter Structures 183

FIR Filter Structures 197

Lattice Filter Structures 208

Problems 219

7 FIR FILTER DESIGN 224

Preliminaries 224

Properties of Linear-phase FIR Filters 228

Window Design Techniques 243

Frequency Sampling Design Techniques 264

Optimal Equiripple Design Technique 277

Problems 294

8 IIR FILTER DESIGN 301

Some Preliminaries 302

Characteristics of Prototype Analog Filters 305

Analog-to-Digital Filter Transformations 327

Lowpass Filter Design Using MATLAB 345

Frequency-band Transformations 350

Comparison of FIR vs.IIR Filters 363

Problems 364

9 APPLICATIONS IN ADAPTIVE FILTERING 371

LMS Algorithm for Coefficient Adjustment 373

System Identification or System Modeling 376

Suppression of Narrowband Interference in a Wideband Signal 377

Adaptive Line Enhancement 380

Adaptive Channel Equalization 380

Summary 383

10 APPLICATIONS IN COMMUNICATIONS 384

Pulse-Code Modulation 384

Differential PCM(DPCM) 388

Adaptive PCM and DPCM(ADPCM) 392

Delta Modulation(DM) 396

Linear Predictive Coding(LPC)of Speech 399

Dual-tone Multifrequency(DTMF)Signals 403

Binary Digital Communications 408

Spread-Spectrum Communications 409

Summary 411

BIBLIOGRAPHY 412

INDEX 413