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ARCHITECTURE AND CONTROL OF ANALOG SELF-INTERFERENCE CANCELLATION

  • US 20160380706A1
  • Filed: 06/26/2015
  • Published: 12/29/2016
  • Est. Priority Date: 06/26/2015
  • Status: Active Grant
First Claim
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1. An apparatus for interference cancellation in a wireless communication system with a diversity antenna configured for reception, comprising:

  • a receive signal path configured to transfer an overall receive (Rx) signal comprising an Rx signal and a residual transmit (Tx) signal, from an antenna port to an Rx input port of a transceiver;

    at least one cancellation path configured to receive a leakage Tx signal from the antenna port;

    a cancellation unit configured to apply a cancellation signal, to the overall Rx signal in the receive signal path;

    a compensation unit configured to generate the cancellation signal by modifying the leakage Tx signal in the cancellation path, based on a compensation control signal; and

    a feedback receiver unit configured to generate the compensation control signal based on the residual Tx signal and the cancellation signal.

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