Patent ID: 6654430
Filing Date: 2003-11-25
Classification: H04B

Abstract:
A digital subscriber line receiving end apparatus resilient to HAM radio interference noise, for receiving a signal from an information source through a communication channel, comprising:an automatic gain controller for amplifying a received signal to a predetermined magnitude; a timing recoverer for recovering timing from a signal output from said automatic gain controller; an equalizer for removing interference noise from a signal output by said timing recoverer; an initialization controller for resetting and initializing said automatic gain controller, said timing recoverer, and said equalizer; and an update controller for comparing signal to noise ratio of a signal output by said equalizer to a reference signal to noise ratio, and freezing a re-initialization state of said automatic gain controller and said equalizer for a predetermined length of time when said signal to noise ratio of said signal from said equalizer is greater than said reference signal to noise ratio and HAM radio interference noise is detected in said signal from said equalizer.