Title :
Joint source and channel coding using turbo codes over rings
Author :
Ruscitto, Alfredo ; Biglieri, Ezio M.
Author_Institution :
Dipt. di Elettronica, Politecnico di Torino, Italy
fDate :
8/1/1998 12:00:00 AM
Abstract :
Turbo codes are a practical solution for achieving large coding gains. We present a new turbo coding scheme where the component codes are convolutional codes (CCs) over the ring of integers modulo M, with M being the alphabet size of the source encoder. The a priori knowledge of the source statistics is used during the iterative decoding procedure for improved decoder performance. As an example of application, we examine differential pulse code modulation (DPCM) encoded image transmission
Keywords :
channel coding; concatenated codes; convolutional codes; decoding; differential pulse code modulation; image coding; iterative methods; source coding; DPCM encoded image transmission; alphabet size; component codes; convolutional codes; decoder performance; differential pulse code modulation; integer rings; iterative decoding; joint source-channel coding; large coding gains; parallel concatenated codes; recursive convolutional codes; source encoder; source statistics; turbo codes; AWGN; Channel coding; Convolutional codes; Iterative decoding; Modulation coding; Protection; Pulse modulation; Redundancy; Statistics; Turbo codes;
Journal_Title :
Communications, IEEE Transactions on
