Title :
Low-rate turbo codes for deep-space communications
Author :
Divsalar, D. ; Pollara, F.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Abstract :
We develop b/n multiple turbo codes and an iterative turbo decoding scheme based on an approximation to the optimum bit decision rule (MAP). For random interleaver size of 16384 bits, a bit error probability of 10-5 at a required Eb/N0 of about 0.8 dB from the binary-input channel capacity for rate b/n was obtained for various turbo codes. Examples are given for rate b/n=1/2, 1/3, 1/4 and 2/6 turbo codes using component codes with up to 16 states
Keywords :
channel capacity; concatenated codes; convolutional codes; decoding; error statistics; iterative methods; space communication links; b/n multiple turbo codes; binary-input channel capacity; bit error probability; component codes; deep-space communications; iterative turbo decoding scheme; low-rate turbo codes; optimum bit decision rule; performance; r random interleaver size; recursive convolutional codes; Channel capacity; Convolutional codes; Error probability; Interleaved codes; Iterative decoding; Laboratories; Modulation coding; Propulsion; Transfer functions; Turbo codes;
Conference_Titel :
Information Theory, 1995. Proceedings., 1995 IEEE International Symposium on
Conference_Location :
Whistler, BC
Print_ISBN :
0-7803-2453-6
DOI :
10.1109/ISIT.1995.531137
