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Use of a biphase code matched filter to receive protocols with code violations

  • US 9,786,109 B2
  • Filed: 12/17/2015
  • Issued: 10/10/2017
  • Est. Priority Date: 12/17/2015
  • Status: Active Grant
First Claim
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1. A method of decreasing false detection of wake-up patterns of a receiver, comprising:

  • receiving a protocol frame in the receiver, wherein the protocol frame includes a preamble, non-biphase code violation encoded information having a plurality of bit lengths, and a wake up pattern;

    decoding the protocol frame using a biphase decoder to produce a detected code;

    correlating the code violation of the detected code with a known code to verify the non-biphase encoded information; and

    over-sampling the detected code to produce a plurality of bits and inputting the plurality of bits into a correlator.

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