FULL DUPLEX WIRELESS TRANSMISSION WITH CHANNEL PHASE-BASED ENCRYPTION
First Claim
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1. A method comprising:
- at a first transceiver, transmitting a plurality of signals to a second transceiver and receiving corresponding receive signals from the second transceiver, wherein each transmitted signal is sent using a channel perturbation;
measuring a plurality of phase values, wherein each phase value is a phase difference between one of the plurality of transmitted signals and corresponding receive signal;
masking a subsequent phase modulated signal employing phase rotation at the first transceiver using the plurality of phase values.
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Abstract
A method comprising: at a first transceiver, transmitting a plurality of signals to a second transceiver and receiving corresponding receive signals from the second transceiver, wherein each transmitted signal is sent using a channel perturbation; measuring a plurality of phase values, wherein each phase value is a phase difference between one of the plurality of transmitted signals and corresponding receive signal; masking a subsequent phase modulated signal employing phase rotation at the first transceiver using the plurality of phase values.
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Citations
15 Claims
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1. A method comprising:
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at a first transceiver, transmitting a plurality of signals to a second transceiver and receiving corresponding receive signals from the second transceiver, wherein each transmitted signal is sent using a channel perturbation; measuring a plurality of phase values, wherein each phase value is a phase difference between one of the plurality of transmitted signals and corresponding receive signal; masking a subsequent phase modulated signal employing phase rotation at the first transceiver using the plurality of phase values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9, 10, 11, 12)
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8. symmetrical antenna structures are used to reduce coupling and self-interference, and wherein a cascade of multiple analog cancellation is used to further reduce coupling and self-interference.
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13. A method comprising:
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measuring loop-back channels from a transmitter of a first transceiver to a receiver of the first transceiver; transmitting at least one symbol and measuring a first relative phase of at least one returned symbol; receiving at least one symbol and retransmitting the at least one received symbol; perturb the channel at the first transceiver to change the channel phase; transmitting at least one additional symbol and measuring a second relative phase of at least one additional returned symbol. - View Dependent Claims (14, 15)
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Specification