The high-level crosstalk identification for the spectrum management in the broadband communication system

摘要

Through the same telephone cable which is bundled crosstalk between the member loop which is used in order to transmit various broadband services is something which restricts the offer of digital subscriber's loop service rather. Crosstalk is presumed, occurrence source of crosstalk is identified, method in order to estimate the addition occurrence source of crosstalk is disclosed. Hybridizing with the standard set of the crosstalk PSD to which crosstalk source consists of the consecutive limited set of known transmission and PSD receives and the typical set of crosstalk coupling, it makes correlation maximum, it is identified inside the frequency domain (530) due to especially. Plural crosstalk types are identified with technique of consecutive spectrum subtraction. When type is identified, crosstalk deisutaba and all other members of complete set of that type are compared. Furthermore, multiple regression (MR) law and matching pursuit (MP) algorithm (535) using, it improves the system in order to identify various crosstalk deisutaba and the performance of method.