System and method for securing backscatter wireless communication
AssigneesUniversity of Miami, University of Houston System, The Trustees of Princeton University
InventorsZhu Han, Walid Saad, Harold Vincent Poor Poor
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Abstract
A system and method for securing backscatter communication. In one embodiment, a backscatter communication system includes a reader. The reader is configured to receive backscatter transmissions. The reader includes a transmitter configured to emit a radio frequency signal to induce backscatter communication. The transmitter includes a continuous wave (CW) carrier signal generator and a noise signal generator. The CW carrier signal generator produces a CW carrier signal. The noise signal generator generates a noise signal. The transmitter is configured to combine the CW carrier signal and the noise signal, and to transmit the combined signal to induce backscatter communication.
Claims20
A backscatter communication system, comprising:
- a reader configured to receive backscatter transmissions, the reader comprising:
- a transmitter configured to emit a radio frequency signal to induce backscatter communication, the transmitter comprising:
- a continuous wave (CW) carrier signal generator that produces a CW carrier signal;
- and
- a noise signal generator that generates a noise signal;
- wherein the transmitter is configured to:
- combine the CW carrier signal and the noise signal;
- and
- transmit the combined signal to induce backscatter communication.
A method for backscatter communication, comprising:
- generating a continuous wave (CW) carrier signal;
- generating a noise signal;
- combining the CW carrier signal and the noise signal;
- transmitting the combined signal;
- receiving a backscatter transmission induced by the combined signal;
- and
- extracting information encoded in the backscatter transmission by filtering the noise signal received with the backscatter transmission.
A radio frequency identification (RFID) reader, comprising:
- a power allocation subsystem configured to determine an amount of power to be allocated for transmission of each of a continuous wave (CW) carrier signal and a noise signal;
- a transmitter configured to:
- combine the CW carrier signal and the noise signal;
- and
- emit the combined signal to induce backscatter communication by an RFID tag.
Dependencies are inferred from the claim text.