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The conventional way to design an MMSE equalizer is to use complex-valued symbols. Unfortunately, this does not work with FBMC-OQAM as this equalizer does not eliminate the imaginary interference. A modified MMSE equalization is formulated to solve this issue by putting real and imaginary parts together using the approach outlined in [11, 13]. This method is termed as full block MMSE equalization whose solution is given by

(1.12)

Where