Electronic device for receiving bluetooth signals and method for receiving the signals

A method comprising:

• receiving a receiving signal comprising a plurality of samples through an antenna;
• obtaining, by a communication processor, a first cumulative correlation value by accumulating results of autocorrelation operations between a first delay signal and corresponding samples of the receiving signal, the first delay signal being obtained by delaying the receiving signal by a first delay time;
• obtaining, by the communication processor, a second cumulative correlation value by accumulating results of autocorrelation operations between a second delay signal and corresponding samples of the receiving signal, the second delay signal being obtained by delaying the receiving signal by a second delay time that is different from the first delay time;
• and
• obtaining, by the communication processor, data included in the receiving signal when an absolute value of the second cumulative correlation value is greater than or equal to a second threshold and when an absolute value of the first cumulative correlation value is less than a first threshold.

A communication processor comprising:

• a buffer circuit configured to output a first delay signal obtained by delaying a receiving signal, received through an antenna, by a first delay time and a second delay signal obtained by delaying the receiving signal by a second delay time greater than the first delay time;
• a first operation circuit configured to output an absolute value of a first cumulative correlation value obtained by accumulating results of correlation operations between corresponding samples in the first delay signal and the receiving signal;
• a second operation circuit configured to output an absolute value of a second cumulative correlation value obtained by accumulating results of correlation operations between corresponding samples in the second delay signal and the receiving signal;
• and
• a data circuit configured to obtain data included in the receiving signal when the absolute value of the second cumulative correlation value is greater than or equal to a second threshold and when the absolute value of the first cumulative correlation value is less than a first threshold.