A PAPR reduction technique using Hadamard transform combined with clipping and filtering based on DCT/IDCT for IM/DD optical OFDM systems
A joint PAPR technique based on Hadamard and clipping and filtering is proposed. The proposed technique is experimentally demonstrated over 100km fiber optic. An end-to-end signal processing is theoretically investigated. The proposed technique can reduce significantly the PAPR of the OFDM signals. The received sensitivity is improved by more than 3dB when the launch power is 10dBm.
hadamard transform clipping and filtering intensity modulator/direct detection optical orthogonal frequency division multiplexing (im/dd-oofdm) discrete cosine transform/inverse discrete cosine (dct/idct) transform peak-to-average power ratio (papr)