Digital audio satellite transmission system
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United States of America Patent
Stats
-
Jan 28, 1986
Grant Date -
N/A
app pub date -
Aug 1, 1983
filing date -
Aug 1, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A digital audio satellite transmission system involving analog-to-digital conversion of audio signals, processing of such signals and transmission to and reception from a satellite transponder link. The digitized audio signal is digitally compressed to reduce the data rate. Several such signals are then time division multiplexed together. Differential encoding, bit interleaving and forward error correction coding is utilized to maintain high signal quality, together with binary phase shift key carrier modulation. Matched filter reception of the BPSK signal transmitted over a conventional satellite transponder link is provided together with BPSK demodulation, TDM demultiplexing, differential decoding, bit deinterleaving and threshold FEC decoding. The compressed digital signal is then expanded and converted to an analog audio signal.
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