A Turbo Code Tutorial
Turbo codes, first presented to the coding community in 1993 [1], represent the most important breakthrough in coding since Ungerboeck introduced trellis codes in 1982 [2]. Whereas Ungerboeck's work eventually led to coded modulation schemes capable of operation near capacity on bandlimited channels [3], the original turbo codes offer near-capacity performance for deep space and satellite channels. The invention of turbo codes involved reviving some dormant concepts and algorithms, and combining them with some clever new ideas. Because the principles surrounding turbo codes are both uncommon and novel, it has been difficult for the initiate to enter into the study of these codes. Complicating matters further is the fact that there exist now numerous papers on the topic so that there is no clear place to begin study of these codes. [via]
http://www.ece.arizona.edu/~ryan/publications...
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