New coding advances for deep space communications

Details New coding advances for deep space communications New coding advances for deep space communications

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987brig.iafcq....y&link_type=abstract

IAF, International Astronautical Congress, 38th, Brighton, England, Oct. 10-17, 1987. 7 p.

Astronomy and Astrophysics

Astronomy

Deep Space Network, Signal Encoding, Space Communication, Decoding, Maximum Likelihood Estimates, Signal To Noise Ratios, Uranus (Planet), Voyager Project

Scientific paper

Advances made in error-correction coding for deep space communications are described. The code believed to be the best is a (15, 1/6) convolutional code, with maximum likelihood decoding; when it is concatenated with a 10-bit Reed-Solomon code, it achieves a bit error rate of 10 to the -6th, at a bit SNR of 0.42 dB. This code outperforms the Voyager code by 2.11 dB. The use of source statics in decoding convolutionally encoded Voyager images from the Uranus encounter is investigated, and it is found that a 2 dB decoding gain can be achieved.

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