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.