This supplement to any standard communication systems text is one of the first books to successfully integrate the use of MATLAB? in the study of communication systems concepts and problems. It has been developed for instructors and students who wish to make use of MATLAB? as an integral part of their study. The former will find the means by which to use MATLAB? as a powerful tool to motivate students and illustrate essential theory without having to customize the applications themselves; the latter will find relevant problems quickly and easily. The book includes numerous MATLAB?-based simulations and examples of communication systems, while providing a good balance of theory and hands-on computer experience. This Updated Printing revises the book and MATLAB? files (available for downloading from the Brooks/Cole Bookware Companion Resource Center Web Site) to MATLAB? V5.