Turbo codes : principles and applications

Abstract

Turbo coding principles have found widespread applications in informationtheory and, in part, have entered into mainstream telecommunicationtheory and practice. These principles are used in error control,detection, interference suppression, equalization, and other communications-relatedareas. Turbo Codes: Principles and Applications is intended for useby advanced level students and professional engineers involved incoding and telecommunication research. The material is organizedinto a coherent framework, starting with basic concepts of blockand convolutional coding, and gradually increasing in a logical andprogressive manner to more advanced material, including applications.All algorithms are fully described and supported by examples, andevaluations of their performance are carried out both analyticallyand by simulations. The book includes new and original material ona bidirectional SOVA decoding algorithm, design of turbo codes basedon the distance spectrum, design of code-matched interleavers, performanceon fading channels, and a turbo trellis code modulation scheme. Trellis-basedand iterative decoding algorithms, along with a comparison of algorithmsbased on their performance and complexity, are discussed. Variouspractical aspects of turbo coding, such as interleaver design, turbocodes on fading channels, and turbo trellis-coded modulation, arepresented. Turbo Codes: Principles and Applications will be especiallyuseful to practicing communications engineers, researchers, and advancedlevel students who are designing turbo coding systems, includingencoder/decoder and interleavers, and carrying out performance analysisand sensitivity studies.