Abstract
To maximize file transfer from deep-space vehicles, a space-to-earth content-transfer protocol that combines turbo codes, RaptorQ codes, real-time channel prediction, and dynamic code-rate selection is proposed. The protocol features a signal-to-noise ratio prediction model that facilitates the periodic adjustment of turbo encoder to achieve adaptive-rate transmission, and fountain codes to eliminate retransmission of specific packets. Simulation results indicate that an increase of about 132% in file transfer rate is achievable compared to fixed-rate transmission scheme.
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