A spectrally efficient modified asymmetrically and symmetrically clipped optical (mASCO)-OFDM for IM/DD systems

A novel spectrally efficient modified asymmetrically and symmetrically clipped optical (mASCO)-OFDM for intensity modulated direct detection (IM/DD) systems is presented. The conventional ASCO-OFDM use two frames to transmit the (ACO)-OFDM (SCO)-OFDM system. proposed mASCO-OFDM system replaces frame SCO-OFDM by a single SCO (mSCO)-OFDM. mSCO-OFDM clips data on only one side of symmetry performs an absolute function other symmetry. This allows be 1.333 times more than ASCO-OFDM. reduces its receiver’s complexity estimating eliminating clipping noise distortion in time domain. Overall, this has 43% lower comparison shows better BER performance Peak Average Power Ratio (PAPR) also ACO-OFDM same spectral efficiency.