Grouped DFT Precoding for PAPR Reduction in Visible Light OFDM Systems

Zhongpeng Wang; Shoufa Chen

A grouped DFT precoding scheme is proposed for peak average power ratio (PAPR) reduction in visible light OFDM systems. The basic idea behind this approach is to divide all the data into nonintersecting subsets and then apply the DFT precoding matrix with a much smaller size to each data subset. The computational complexity of the proposed scheme is reduced compared with that of the conventional DFT precoding scheme. The simulation results indicate that the proposed scheme may improve the PAPR performance compared with that of the original OFDM. Meantime, the BER performance of the proposed system can be improved compared with the original OFDM system.

Select Volume / Issues:

• Volume 6,Issue 6, Nov. 2015

Year:

2015

Type of Publication:

Article

Keywords:

Visible Light Communication; Orthogonal Frequency Division Multiplexing OFDM; Peak-To-Average Power Ratio PAPR; Precoding; Discrete Fourier Transform DFT

Journal:

IJECCE

Volume:

6

Number:

6

Pages:

710-713

Month:

November