Performance Analysis of Peak to Average Power Ratio in Multi Carrier Modulation Schemes of Visible Light Communication
Date
2019-11
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Pulchowk Campus
Abstract
VLC system based on the OFDM technology suffers from the high PAPR affecting the
performance of the System. ACO-OFDM and DCO-OFDM are the major multi carrier
modulation schemes in VLC. High PAPR not only leads to distortion and degradation
of performance of VLC system but also makes system complex. SLM and PTS
techniques are attractive PAPR reduction techniques in VLC system which provide
significant reduction in PAPR. Combination of PTS and SLM with DCT gives better
result in terms of PAPR reduction. In this research work, the partitioned sub blocks data
are firstly transformed by a DCT into new modified data and the scheme utilizes the
PTS and SLM technique to further reduce the PAPR of the OFDM signal. The PAPR
performance is evaluated using a simulation and the results show that the new scheme
yields improved PAPR performance in comparison to PTS, SLM, DCT, PTS+SLM
scheme and original OFDM.
Description
VLC system based on the OFDM technology suffers from the high PAPR affecting the
performance of the System.
Keywords
ACO-OFDM, DCO-OFDM, DCT, PAPR