Reduction of PAPR in Optical OFDM Signals Using PTS Schemes Without Side Information

摘要

Visible light communication provides bandwidth efficiency, secured communication and brightness along with data transmission simultaneously. Optical orthogonal frequency-division multiplexing (optical OFDM) in VLC systems can accomplish high information rate while transmission guarantees high dependability over the multipath fading condition; consequently, it has been embraced as a standard strategy in different communication systems that function as wireless. For decreasing peak-to-average power ratio of optical orthogonal frequency-division multiplexing signals, two partial transmit sequence (PTS) schemes without side information (SI) are proposed. Since recognizable phase alteration is connected to the components of every rotating vector, without transmitting SI, distinguish a rotating vector. The maximum likelihood (ML) detector is utilized to partition SI from the signal that is being obtained at the receiver and recuperate the information data stream. The Euclidean separation between the input information signal constellation and the signal constellation that is being rotated using the phase offsets is being abused by this ML detector. It is researched how to pick good phase offsets for implanting SI, by doing pairwise error probability (PEP) examination.