Determining the data transmission rate based on the power spectral density estimation

摘要

(57) Abstract As for this invention, it regards the method and the circuit in order to presume the data transmission rate in the communication system. The aforementioned communication system utilizes variable data transmission rate. The transmission signal between two bureaus of the particular system includes the plural data signals on the sequence of the data frame. The data frame of the transmission signal which is received is classified following to the classification to which data transmission rate is defined in advance, after that, data transmission rate of the data frame which is received is presumed on the basis of the aforementioned classification.