PSK-FSK Spread Spectrum Modulation/Demodulation.
DEPARTMENT OF THE NAVY WASHINGTON D C
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The patent relates to a spread spectrum link in which a transmitter section generates a different frequency signal for each unique data symbol accepted from the data source and phase shift modulates the frequency signals with a sequence of spread spectrum symbols. The frequency differences used are such that orthogonality is obtained over the receivers observation time of each spread spectrum symbol.
- Electrical and Electronic Equipment
- Non-Radio Communications