TRANSMISSION METHOD FOR SUBSCRIBER LINE

摘要

A remote terminal line digital transmission method for performing a high-speed data transmission by using an existing remote terminal line, that is referred to as a telephone line, is disclosed. In a transmission method for a remote terminal line for performing a high speed data transmission by using a high frequency band of the remote terminal line while coexisting with a telephone, a signal quality output signal including a periodic noise is extracted from a receiving signal received through the remote terminal line; and the signal quality output signal is sampled by a predictive filter and the sampled values are averaged; whereby the amplitude and the period of the noise is predicted so that a noise having a periodicity is automatically predicted. <IMAGE>