Patent ID: 7400694
Filing Date: 2008-07-15
Classification: H04L

Abstract:
1. A method for adapting a receiver of a data transmission system which uses only two slicers to determine an eye opening, comprising: receiving a signal at a low-pass filter (LPF), wherein the signal is associated with a data transmission stream, and wherein the LPF's bandwidth is adjustable; supplying the LPF's output signal to a single data slicer and single auxiliary slicer, wherein the data slicer is used to compare the LPF's output signal to a fixed threshold for identifying symbols in the data transmission stream, and wherein the auxiliary slicer is used to compare the LPF's output signal to an adjustable threshold for identifying an eye opening size for the LPF's output signal; determining a first eye opening size by: performing a first adjustment, in a first direction, to the LPF's bandwidth, wherein performing the first adjustment causes the LPF's output signal to have an eye opening size that is different from the first eye opening size; determining a second eye opening size, as a result of the first adjustment, by: comparing the first eye opening size to the second eye opening size; and performing a second adjustment, to the LPF's bandwidth, in a direction dependent upon a result of the comparison.