Patent ID: 6498820
Filing Date: 2002-12-24
Classification: H04B

Abstract:
In a data communication device having a sampling rate and having an electronic signal containing a periodic signal, the periodic signal having a fundamental frequency, an interference estimator for modeling the periodic signal, the interference estimator comprising in combination:a buffer containing entries corresponding to at least one cycle at the fundamental frequency; a first multiplier coupled to receive the electronic signal; a delay block coupled to the buffer, the delay block being operable to delay the entries of the buffer an integer number of cycles of the fundamental frequency of the periodic signal; an adder coupled to the delay block and to the first multiplier, the adder adding the delayed buffer entries to the first multiplier output; and a second multiplier coupled between said delay block and said adder, wherein the first multiplier is not a constant value, and wherein the second multiplier is not a constant value.