Communications Toolbox

The Communications Toolbox provides a comprehensive set of tools for the design, analysis, and simulation of digital and analog communication systems. The Toolbox contains more than 100 MATLAB functions and 150 SIMULINK blocks for developing and simulating algorithms and system designs in applications such as wireless devices, modems, and storage systems. It also serves as an excellent basis for research and education in communications engineering.

Features

• Source encoding and quantization
• Error-control coding
• Modulation and demodulation
• Transmitting and receiving filters
• Baseband and passband channel models
• Synchronization, including analog and digital phase-locked loops (PLL)
• Multiple access: CDMA, FDMA, and TDMA
• Galois Field computation
• Signal generators
• Analysis and plotting functions, including BER, eye pattern, scatter, constellation, and trellis

Highlights

With its extensive suite of MATLAB functions and SIMULINK blocks, the Toolbox provides the building blocks for modeling, simulating, and analyzing any element of a typical communications system. You can develop algorithms using the MATLAB matrix language, model system architecture using hierarchical SIMULINK block diagrams, or combine the two.

Accelerate Communications System Engineering. The Communications Toolbox provides a comprehensive set of tools that accelerate the design, analysis, and simulation of communication systems. Using the Communications Toolbox, engineers can develop and simulate algorithms for modulation, source and error-control coding, and for equalizers, transmitting and receiving filters, and synchronization. The toolbox also provides a convenient framework for modeling and analyzing system performance and channel effects.

Extensive Suite of MATLAB Functions and SIMULINK Blocks. The toolbox provides design engineers and researchers with a foundation of more than 100 MATLAB functions and 150 SIMULINK blocks. All source code is included, creating an open computing environment in which you can easily customize algorithms by modifying code in MATLAB M-files.

Bridges the Gap between Algorithm Development and System Prototyping. With the toolbox, communications engineers can use MATLAB and SIMULINK to create complete product designs and evaluate implementation tradeoffs much earlier in the development process.

Demos and Technical Examples. An extensive user's guide provides a complete reference guide to both the MATLAB functions and the SIMULINK blocks. The toolbox also provides several in-depth application examples, including bit-error rate computation, early-late gate synchronization, digital transmission of high-bit-rate signals over cable subscriber lines, and trellis code modulation.

Working Modem Simulation Included. A full working v.34 modem simulation is included in the toolbox and fully documented in the users' manual. This simulation may be used as is, and it may be modified to provide the basis of new designs.

Error Control Coding and Modulation. The Communications Toolbox provides an advanced set of tools for communications system modeling. Functions for source and error control coding include Reed-Solomon and convolution codes. Functions to support the most commonly used analog and digital modulation and demodulation methods – including passband and baseband – are also provided. The Toolbox offers a choice of simulation approaches for different kinds of modeling problems, and provides built-in tools for performance analysis.

Online Examples and Application Case Studies. Each function and block in the Toolbox is fully documented with an online example of its use. The Toolbox also provides in-depth case studies demonstrating the use of the toolbox in real-world communications systems design and analysis applications. These case studies include:

• CCITT v.34 modem simulation
• High bit-rate digital transmission over cable subscriber lines (HDSL)
• Early-late gate synchronization