×

Interference Signal Cancellation Apparatus and Method

  • US 20180083659A1
  • Filed: 11/30/2017
  • Published: 03/22/2018
  • Est. Priority Date: 05/30/2015
  • Status: Active Grant
First Claim
Patent Images

1. An interference signal cancellation apparatus, comprising:

  • a controller;

    a first power divider coupled to the controller and configured to divide a cancellation reference signal link corresponding to a transmit antenna into a first reference link and a second reference link;

    a second power divider coupled to the controller and configured to;

    divide a signal receiving link into a first receiving link and a second receiving link that is coupled to the controller; and

    use the first receiving link as an output link;

    a primary canceller located at the first reference link and coupled to the controller and the signal receiving link, wherein the primary canceller is configured to;

    receive a primary configuration parameter of the controller; and

    perform interference cancellation processing on a received signal on the signal receiving link according to the primary configuration parameter and a cancellation reference signal on the first reference link to generate a first signal without interference that is transmitted on the signal receiving link; and

    a secondary canceller located at the second reference link and coupled to the controller and to the second receiving link, wherein the secondary canceller is configured to;

    receive a secondary configuration parameter of the controller; and

    perform interference cancellation processing on a received signal on the second receiving link according to the secondary configuration parameter and a cancellation reference signal on the second reference link to generate a second signal without interference that is transmitted on the second receiving link,wherein the controller is configured to;

    generate the secondary configuration parameter;

    detect, after sending the secondary configuration parameter to the secondary canceller, a power value of the second signal without interference and a power value of the first signal without interference;

    determine, according to the power value of the second signal without interference and the power value of the first signal without interference, whether the secondary canceller can decrease the power value of the first signal without interference;

    generate an updated primary configuration parameter according to the secondary configuration parameter of the secondary canceller and the primary configuration parameter of the primary canceller when the secondary canceller can decrease the power value of the first signal without interference; and

    send the updated primary configuration parameter to the primary canceller.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×