Turbo and Turbo-Like Codes: Principles and Applications in Telecommunications

摘要: For decades, the de facto standard for forward error correction was a convolutional code decoded with Viterbi algorithm, often concatenated another (e.g., Reed-Solomon code). But since introduction of turbo codes in 1993, much more powerful referred to collectively as and turbo-like have eclipsed classical methods. These error-correcting techniques achieve excellent error-rate performance that can closely approach Shannon's channel capacity limit. The lure these large coding gains has resulted their incorporation into widening array telecommunications standards systems. This paper will briefly characterize codes, examine implications physical layer system design, discuss systems where they are being used. emphasis be on applications, particularly wireless, though others mentioned. Some thoughts use future also given.