Patent ID: 7782935

Claim:
A method for producing an output signal based on an input signal, the output signal having a data-rate, the method comprising: producing a first set of delayed samples of the output signal by using first circuitry to (a) sample the output signal at a first rate equal to a first integer fraction of the data-rate and (b) delay the samples by a first delay; producing a second set of delayed samples of the output signal by using second circuitry to (a) sample the output signal at the first rate after a delay equal to a second integer fraction of the data-rate period, wherein the first integer fraction is equal to the second integer fraction, and (b) delay the samples by the first delay; using multiplexer circuitry to alternately select samples from the first and second sets to produce successive selected samples, wherein the selected samples comprise a sample of the first set every integer number of data-rate periods and a sample of the second set following each sample of the first set; passing the selected samples output by the multiplexer circuitry through gain circuitry; and using summation circuitry to combine the selected samples, after passage through the gain circuitry, with the input signal in production of the output signal.