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There are a total of 7 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
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Coded spread spectrum digital transmission system design study
Author(s): Heller, J. A.; Odenwalder, J. P.; Viterbi, A. J.
Abstract: Results are presented of a comprehensive study of the performance of Viterbi-decoded convolutional codes in the presence of nonideal carrier tracking and bit synchronization. A constraint length 7, rate 1/3 convolutional ...
NASA Center: NASA (non Center Specific)
Publication Year: 1974
Added to NTRS: 2008-06-27
Accession Number: 74N27624; Document ID: 19740019511; Report Number: NASA-CR-134310
Hybrid coding systems study
Author(s): Odenwalder, J. P.; Gilhousen, K. S.; Heller, J. A.; Jacobs, I. M.; Jelinek, F.; Viterbi, A. J.
Abstract: The state of efficiency improvement available with high speed decoders presently in operation or under development is summarized. The required ratio of bit-energy-to-noise-density is given in each case for bit error ...
NASA Center: NASA (non Center Specific)
Publication Year: 1972
Added to NTRS: 2007-05-31
Accession Number: 72N32206; Document ID: 19720024556; Report Number: NASA-CR-114486
Study of information transfer optimization for communication satellites
Author(s): Odenwalder, J. P.; Viterbi, A. J.; Jacobs, I. M.; Heller, J. A.
Abstract: The results are presented of a study of source coding, modulation/channel coding, and systems techniques for application to teleconferencing over high data rate digital communication satellite links. Simultaneous ...
NASA Center: NASA (non Center Specific)
Publication Year: 1973
Added to NTRS: 2005-08-25
Accession Number: 73N20889; Document ID: 19730012162; Report Number: NASA-CR-114561
Further results on optimal decoding of convolutional codes
Author(s): Odenwalder, J. P.; Viterbi, A. J.
Abstract: Algorithm for optimal decoding of convolutional codes confirmed using error probability upper bound
NASA Center: NASA (non Center Specific)
Publication Year: 1969
Added to NTRS: 2004-11-03
Accession Number: 70A15067; Document ID: 19700038951
Hybrid and concatenated coding applications.
Author(s): Hofman, L. B.; Odenwalder, J. P.
Abstract: Results of a study to evaluate the performance and implementation complexity of a concatenated and a hybrid coding system for moderate-speed deep-space applications. It is shown that with a total complexity of less than ...
NASA Center: Ames Research Center
Publication Year: 1972
Added to NTRS: 2004-11-03
Accession Number: 73A23401; Document ID: 19730038599
Concatenation of convolutional and block codes Final report
Author(s): Odenwalder, J. P.; Rosenberg, W. J.; Viterbi, A. J.; Zeoli, G. F.
Abstract: Comparison of concatenated and sequential decoding systems and convolutional code structural properties
NASA Center: NASA (non Center Specific)
Publication Year: 1971
Added to NTRS: 2004-11-03
Accession Number: 71N32505; Document ID: 19710023029; Report Number: NASA-CR-114358
Carrier tracking, bit synchronization, and coding for S-band communications links
Author(s): Odenwalder, J. P.
Abstract: This paper presents the results of a study of the performance of Viterbi-decoded convolutional codes in the presence of nonideal carrier tracking and bit synchronization. A constraint length 7, rate 1/3 convolutional code ...
NASA Center: NASA (non Center Specific)
Publication Year: 1974
Added to NTRS: 2004-11-03
Accession Number: 75A23910; Document ID: 19750039838
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