Intelligent backhaul radio with co-band zero division duplexing

  • US 8,638,839 B2
  • Filed: 02/14/2013
  • Issued: 01/28/2014
  • Est. Priority Date: 06/21/2012
  • Status: Active Grant
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First Claim
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1. An intelligent backhaul radio comprising:

  • a plurality of transmit radio frequency (RF) chains to convert from a plurality of transmit chain input signals to a plurality of respective RF transmit chain signals;

    a plurality of receive RF chains to convert a plurality of receive RF signals to respective baseband sampled signals, wherein the receive RF signals comprise one or more transmitter related signals, each respectively derived from one of the RF transmit chain signals;

    a plurality of receive baseband cancellation combiners to combine a plurality of baseband filtered signals to provide a plurality of receive symbol streams;

    a plurality of adaptable baseband filter sets, each set of the plurality of adaptable baseband filter sets to filter respective ones of the plurality of baseband sampled signals and each set to provide a plurality of baseband filtered signals respectively to each of the plurality of respective receive baseband cancellation combiners, wherein each of said plurality of adaptable baseband filter sets comprise a plurality of adaptable baseband filters; and

    a cancellation controller to adapt each of said plurality of adaptable baseband filters to reduce an interfering signal component within one or more of said receive symbol streams, wherein the controller utilizes a metric that accounts for the level of said interfering signal component within one or more of said receive symbol streams and is derived from one or more of said receive RF signals or said receive symbol streams, and wherein said interfering signal component is derived from one or more of said RF transmit chain signals.

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