| Zhong-peng Wang,Shou-fa Chen,Yang Zhou,Ming Chen,Jin Tang,Lin Chen.Combining discrete cosine transform with clipping for PAPR reduction in intensity-modulated OFDM systems[J].Optoelectronics Letters,2014,10(5):356-359 |
| Combining discrete cosine transform with clipping for PAPR reduction in intensity-modulated OFDM systems |
| Author Name | Affiliation | E-mail | | Zhong-peng Wang | School of Information and Electronic Engineering, Zhejiang University of Science and Technology, Hangzhou, 310023, China
State Key Laboratory of Millimeter Waves, Southeast University, Nanjing, 210096, China | wzp1966@sohu.com | | Shou-fa Chen | School of Information and Electronic Engineering, Zhejiang University of Science and Technology, Hangzhou, 310023, China | | | Yang Zhou | School of Information and Electronic Engineering, Zhejiang University of Science and Technology, Hangzhou, 310023, China | | | Ming Chen | Key Laboratory for Micro-/Nano-Optoelectronic Devices, Ministry of Education, College of Information Science and Engineering, Hunan University, Changsha, 410082, China | | | Jin Tang | Key Laboratory for Micro-/Nano-Optoelectronic Devices, Ministry of Education, College of Information Science and Engineering, Hunan University, Changsha, 410082, China | | | Lin Chen | Key Laboratory for Micro-/Nano-Optoelectronic Devices, Ministry of Education, College of Information Science and Engineering, Hunan University, Changsha, 410082, China | |
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| 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. |
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