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A High Data Rate Communications System Using Long Pulses.
Patent Application, Filed 31 Jan 90,
DEPARTMENT OF THE NAVY WASHINGTON DC
Pagination or Media Count:
A communications system which decreases noise errors and increases information rate without sacrificing bandwidth is formed by a transmitter and a receiver designed to handle long pulse compression waveforms. An encoder connected to the transmitter converts a voice message into digitized voice words, encodes the digitized voice words into time shifted code sequences, and phase modulates the long pulse compression waveform, producing a M-ary coded signal at the output of the transmitter. The receiver is connected to a decoder which includes at least one convolver for computing the correlation of received digitally coded words with independently generated time shifted code sequences, and a controller for generating a plurality of data values according to the largest correlation values, and a transducer responsive to the data values. Author
APPROVED FOR PUBLIC RELEASE