Title :
Coding techniques under study at NASA
Author :
Morakis, J.C. ; Miller, W.H.
Author_Institution :
NASA Goddard Space Flight Center, Greenbelt, MD, USA
Abstract :
NASA is studying coding techniques in an effort to achieve communications from spacecraft at lower effective isotropic radiated power. Presently NASA´s coding standards support a (2,1,6) convolutional inner code and a Reed-Solomon (255,223,8) outer code; during the past two years studies were conducted on the performance of a long constraint length (2,1,14) convolutional code and the Turbo codes. Flight experiments will lead to results on the actual performance, complexity and implementation of such coding systems
Keywords :
Reed-Solomon codes; Viterbi decoding; block codes; channel coding; code standards; coding errors; concatenated codes; convolutional codes; error correction codes; forward error correction; interleaved codes; maximum likelihood decoding; satellite telemetry; space communication links; (2,1,6) convolutional inner code; Gaussian noise channel; NASA coding techniques; Reed-Solomon (255,223,8) outer code; Turbo codes; big Viterbi convolutional code; block codes; channel coding; coding standards; complexity; concatenated code; decoders; error floor; implementation; long constraint length (2,1,14) convolutional code; lower effective isotropic radiated power; performance; space communications; telemetry codes; transparent code; Concatenated codes; Convolutional codes; Decoding; Gaussian noise; Interleaved codes; NASA; Reed-Solomon codes; Space vehicles; Telemetry; Viterbi algorithm;
Conference_Titel :
Aerospace Conference, 1997. Proceedings., IEEE
Conference_Location :
Snowmass at Aspen, CO
Print_ISBN :
0-7803-3741-7
DOI :
10.1109/AERO.1997.574912
