Accession Number:

ADD002477

Title:

PSK-FSK Spread Spectrum Modulation/Demodulation.

Descriptive Note:

Patent,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s):

• Lowry,Ray B.

Report Date:

1975-10-28

Pagination or Media Count:

10.0

Abstract:

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.

Descriptors:

• *Modems
• *Patents
• *Spread spectrum
• Phase shift keyers
• Frequency shift keyers
• Synchronization(Electronics)
• Modulation
• Demodulation

Subject Categories:

• Electrical and Electronic Equipment
• Non-Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE