This book is designed both for advanced undergraduate and postgraduate students in electronic engineering, computer science and communications and for practising engineers engaged in the communications and software industries. It treats the subject from a practical standpoint and presents the underlying mathematics - which in some treatments of the subject can be daunting - in a way which makes them accesible and always directly relevant. Written by an author with extensive experience of the applications of the techniques to a wide range of practical engineering problems, the book presents the reader with systematic explanation of the techniques and methods of error coding. The work is supplemented by software-based experiments enabling the reader to verify the results and to carry out further investigation of the subject. All of the software used in the book can be obtained free of charge from the author"s web site on uni/academic/D-H/eee/esg/staff/adh-prof.html