The low spectral confinement of orthogonal frequency division multiplexing (OFDM) signals obliges OFDM based power line communications (PLC) systems to use out-of-band emissions (OOBE) reduction methods in order to comply with electromagnetic compatibility (EMC) regulations. This work proposes a computationally simple optimization procedure that yields a versatile set of solutions to shape the spectrum of OFDM signals regardless of the location and width of its passbands.
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