High data rate long pulse compression waveform communication sys

Details High data rate long pulse compression waveform communication sys High data rate long pulse compression waveform communication sys

1991-01-31

1992-10-13

Swann, Tod

Pulse or digital communications

Repeaters

Testing

380 34, H04K 100

Patent

active

051557410

ABSTRACT:
A communications system which decreases noise errors and increases informon rate without sacrificing bandwidth is formed by a transmitter and a receiver designed to handle long pulse compression wavforms. An encoder connected to the transmitter converts a voice message into digitized voice words, encodes the digitized voice words into the 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.

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patent: 5042050 (1991-08-01), Owen

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