光电子快报(英文版), 2014, 10 (5): 356, Published Online: Oct. 12, 2017
Combining discrete cosine transform with clipping for PAPR reduction in intensity-modulated OFDM systems
Abstract
In this paper, the peak-to-average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) signal is reduced by combining the discrete cosine transform (DCT) with clipping in optical intensity-modulated direct-detection (IM/DD) OFDM systems. First, the data are transformed into new modified data by DCT. Second, the proposed scheme utilizes the clipping technique to further reduce the PAPR of OFDM signal. We experimentally demonstrate that the optical OFDM transmission system with this proposed scheme can achieve significant performance improvement in terms of PAPR and bit error rate (BER) compared with the original optical OFDM systems.
WANG Zhong-peng, CHEN Shou-fa, ZHOU Yang, CHEN Ming, TANG Jin, CHEN Lin. Combining discrete cosine transform with clipping for PAPR reduction in intensity-modulated OFDM systems[J]. 光电子快报(英文版), 2014, 10(5): 356.