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Radio with dynamically controlled correlation threshold

  • US 10,218,493 B2
  • Filed: 02/27/2017
  • Issued: 02/26/2019
  • Est. Priority Date: 02/27/2017
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • receiving and processing, at an analog frontend, a radio frequency (RF) signal;

    receiving, at a digital backend, digital signals based on the processed RF signal;

    defining, by operation of a channelizer of the digital backend, a plurality of channels;

    calculating, by operation of a logic device, a plurality of rates of false packet detections associated with the plurality of channels, respectively;

    adjusting, by operation of a correlation threshold calculator, based at least in part on a first rate of false packet detections from among the plurality of rates of false packet detections, a first correlation threshold associated for use with a first channel from among the plurality of channels and for use with a first modulation scheme;

    correlating, using a packet processor, a signal from the channelizer with a preamble of a packet, wherein the correlating is based at least in part on the first correlation threshold, the first channel and the first modulation scheme, wherein the packet processor comprises a plurality of correlation loops, each correlation loop associated with a respective correlation threshold from among a plurality of correlation thresholds adjusted by the correlation threshold calculator, and wherein at least some of the plurality of correlation thresholds are used to evaluate correlation of signals in a particular channel plan and at least some are used to evaluate correlation of signals using a particular modulation scheme;

    decoding, by operation of one of a plurality of decoders, the packet within the first channel using the first modulation scheme.

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