| 摘要 |
PROBLEM TO BE SOLVED: To provide a data signal discrimination circuit and a method that can reduce occurrence of an error in discrimination of presence of a data signal independently of the communication quality. SOLUTION: The data signal discrimination circuit that receives a signal with a data structure where a pilot signal and a data signal are temporally multiplexed and whose transmission is intermittently stopped as transmission control, is provided with a power ratio calculation section 17 that calculates the ratio of the power of the pilot signal to that of the data signal, a reception quality calculation section 18 that calculates the reception quality on the basis of the pilot signal, and a discrimination processing section 21 that generates a threshold on the basis of the reception quality calculated by the reception quality calculation section 18 and compares the threshold with the power ratio calculated by the power ratio calculation section 17 to discriminate the presence of the data signal. |
