Masked signal transceiver
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsThomas W. Schlosser, James W. Bond
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Abstract
A masked signal transceiver of the present invention comprises a transmitter for transmitting a combined signal of a primary communications signal and an attenuated secondary communications signal occupying substantially the same frequency band concurrently. A receiver receives the combined signal and demodulates the primary communications signal to extract the primary communications signal information. An adaptive locally optimum processor separates the secondary communications signal from the combined signal. The secondary communications signal is then demodulated to extract the secondary communications signal information.
Claims5
A communications system, comprising
- a transmitter comprising a signal combiner for coupling a primary communications signal and a secondary communications signal to create a combined signal, wherein the primary communications signal and the secondary communications signal occupy substantially the same frequency band concurrently, the primary communications signal is selected from the group that includes a constant amplitude signal and a linear phase modulated signal, and the secondary communications signal is a direct sequence spreading signal;
- a receiver for receiving the combined signal comprising an adaptive locally optimum processor for separating the secondary communications signal from the primary communications signal;
- and
- an attenuator coupled to the signal combiner for attenuating the secondary communications signal.
Dependencies are inferred from the claim text.