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Transceiver with hybrid adaptive self-interference canceller for removing transmitter generated noise to prevent modem jamming

  • US 7,869,527 B2
  • Filed: 10/15/2007
  • Issued: 01/11/2011
  • Est. Priority Date: 10/17/2006
  • Status: Expired due to Fees
First Claim
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1. A wireless transmit/receive unit (WTRU) comprising:

  • a transmitter configured to generate a desired transmit signal on a transmit band which incidentally generates a self-interfering signal which corrupts a receive signal in a receive band, wherein the transmitter is transmitting and the receiver is receiving on different channels within the same radio access technologies (RATs);

    a receiver configured to receive the corrupted receive signal on at least one channel in the receive band;

    a self-interference canceller (SIC) configured to;

    receive a reference signal generated by filtering the desired transmit signal to pass the receive band and to attenuate the transmit band;

    receive the corrupted receive signal including the self-interfering signal from the receiver;

    filter and extract a correction signal that resembles the self-interfering signal; and

    subtract the correction signal from the corrupted receive signal to generate a desired receive signal.

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