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Optimization of pilot interval design in direct-detected optical OFDM system
Authors:Fan Li  Zizheng Cao  Guangqian Wen  Jiangnan Xiao  Jianjun Yu  Lin Chen
Institution:1. Key Laboratory for Micro-/Nano-Optoelectronic Devices of Ministry of Education, College of Information Science and Engineering, Hunan University, Changsha 410082, People''s Republic of China;2. ZTE USA, Inc., NJ 08836, USA;1. College of Computer Science and Electronic Engineering, Hunan University, Changsha, Hunan, China;2. Shanghai Institute for Advanced Communication and Data Science, Key Laboratory for Information Science of Electromagnetic Waves (MoE), Fudan University, Shanghai 200433, China;3. ZTE (TX) Inc., Morristown, NJ 07960, USA;1. Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, China;2. College of Information Science and Engineering, Hunan Normal University, Changsha, Hunan 410080, China;3. Southern Laboratory of Ocean Science and Engineering (Guangdong, Zhuhai), Zhuhai 519000, China;1. College of Computer Science and Electronic Engineering, Hunan University, Changsha, Hunan 410082, China;2. College of Electrical and Information Engineering, Huaihua University, Huaihua, Hunan 418008, China;1. Key Laboratory for Information Science of Electromagnetic Waves (MoE), Fudan University, Shanghai 200433, China;2. ZTE (TX) Inc, Morristown, NJ 07960, USA
Abstract:The direct-detected optical OFDM (DDO-OFDM) system in frequency-selective fading fiber channel with three different types of pilot interval design has been experimentally investigated. In these schemes, the 2.28 Gbit/s QPSK-OFDM signal is transmitted over 100 km fiber in the system. The experiment results show the scheme with sparse pilot as frequency increasing shows the best performance for DDO-OFDM system.
Keywords:
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