Patent ID: 7580455
Filing Date: 2009-08-25
Classification: H04L

Abstract:
1. In a communications receiver having a decision feedback equalizer filter, the communications receiver responsive to a received signal that is over-sampled with respect to a symbol rate, an apparatus comprising: means for creating a second over-sampled signal by summing the received signal with a first over-sampled signal output from the decision feedback filter; means for de-interleaving the second over-sampled signal into multiple baud-spaced signals, where at least one of the baud-spaced signals corresponds to a first on-baud, baud-spaced signal; means for slicing the first on-baud, baud-spaced signal and for determining a nearest element decision to create a second on-baud, baud-spaced signal; means for estimating a level of the baud-spaced signals using an output of the means for slicing and the baud-spaced signals to form multiple estimated baud-spaced signals; means for interleaving the second on-baud, baud-spaced signal with at least one of the estimated baud-spaced signals to create an over-sampled feedback signal; and wherein the decision feedback equalization filter is operated by coupling the over-sampled feedback signal to the decision feedback equalization filter.