FD-LEFrequency Domain Linear Equalization
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The error vector between the filtered received signal and the transmitted signal of both FD-LE and FD-DFE can be expressed by
22) is a standard convex problem, the KKT conditions provide OPA solutions for FD-LE, FD-DFE, and an idealized MF receiver as follows:
For FD-LE and FD-DFE, when the ordered SP and UPA are employed at SR (denoted by SP+UPA), the MSEs decrease compared with when only UPA is employed.