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BLUETOOTH SIGNAL RECEIVING METHOD AND DEVICE USING IMPROVED CARRIER FREQUENCY OFFSET COMPENSATION

  • US 20170195151A1
  • Filed: 12/23/2016
  • Published: 07/06/2017
  • Est. Priority Date: 12/30/2015
  • Status: Active Grant
First Claim
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1. A Bluetooth signal receiving device comprising:

  • a frequency shift demodulator circuit configured to;

    generate a baseband signal by performing frequency shift demodulation on a received signal; and

    generate a frequency proportion signal having a value proportional to a frequency of the baseband signal;

    a sampler circuit configured to generate a plurality of series of bit streams, sampled at a preset time interval, from the frequency proportion signal;

    a training bit pattern discriminator circuit configured to determine whether the plurality of series of bit streams generated by the sampler circuit satisfies a training bit pattern condition; and

    a frequency offset compensation circuit configured to compensate the frequency proportion signal by using a measured error metric as an effective error metric when the plurality of series of bit streams satisfies the training bit pattern condition.

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