Communications Toolbox Getting Started Preface What Is the Communications Toolbox? Related Products Using This Guide Expected Background Supplementing This Guide with Command-Line Help Configuration Information Technical Conventions Polynomials as Vectors Matrices Typographical Conventions Getting Started with the Communications Toolbox A Detailed Example What the Example Does Where to Find the Example How the Example Works Output from the Example Using the Communications Toolbox Random Signals and Error Analysis Error Analysis Features of the Toolbox Random Signals Error Rates Eye Diagrams Scatter Plots Source Coding Source Coding Features of the Toolbox Representing Quantization Parameters Quantizing a Signal Optimizing Quantization Parameters Implementing Differential Pulse Code Modulation Optimizing DPCM Parameters Companding a Signal Selected Bibliography for Source Coding Block Coding Block Coding Features of the Toolbox Block Coding Terminology Representing Messages and Codewords Representing Block Coding Parameters Creating and Decoding Block Codes Performing Other Block Code Tasks Selected Bibliography for Block Coding Convolutional Coding Convolutional Coding Features of the Toolbox Polynomial Description of a Convolutional Encoder Trellis Description of a Convolutional Encoder Creating and Decoding Convolutional Codes Examples of Convolutional Coding Selected Bibliography for Convolutional Coding Modulation Modulation Features of the Toolbox Modulation Terminology Representing Analog Signals Simple Analog Modulation Example Other Options in Analog Modulation Filter Design Issues Digital Modulation Overview Representing Digital Signals Significance of Sampling Rates Representing Signal Constellations Simple Digital Modulation Example Customizing the Modulation Process Other Options in Digital Modulation Selected Bibliography for Modulation Special Filters Special Filter Features of the Toolbox Noncausality and the Group Delay Parameter Designing Hilbert Transform Filters Filtering with Raised Cosine Filters Designing Raised Cosine Filters Selected Bibliography for Special Filters Galois Field Computations Galois Field Features of the Toolbox Galois Field Terminology Representing Elements of Galois Fields Default Primitive Polynomials Converting and Simplifying Element Formats Arithmetic in Galois Fields Polynomials over Prime Fields Other Galois Field Functions Selected Bibliography for Galois Fields Index of Examples Reference Functions by Category Alphabetical List of Functions ademod ademodce amod amodce apkconst awgn bchdeco bchenco bchpoly bi2de biterr compand convenc cyclgen cyclpoly ddemod ddemodce de2bi decode demodmap dmod dmodce dpcmdeco dpcmenco dpcmopt encode eyediagram gen2par gfadd gfconv gfcosets gfdeconv gfdiv gffilter gflineq gfminpol gfmul gfplus gfpretty gfprimck gfprimdf gfprimfd gfrank gfrepcov gfroots gfsub gftrunc gftuple gfweight hammgen hank2sys hilbiir istrellis lloyds marcumq modmap oct2dec poly2trellis qaskdeco qaskenco quantiz randerr randint randsrc rcosfir rcosflt rcosiir rcosine rsdeco rsdecode rsdecof rsenco rsencode rsencof rspoly scatterplot symerr syndtable vec2mat vitdec wgn Printable Documentation (PDF) Product Page (Web)