Low-PAPR interleaved single-carrier FDM scheme for optical wireless communications

  • Tiantian Zhang
  • Ji Zhou
  • Zhenshan Zhang
  • Yueming Lu
  • Fei Su
  • Yaojun QiaoEmail author


As a potential complementary access technology for the 5G wireless systems, optical wireless communication (OWC) gains extensive attention for decades owing to its numerous advantages of broad license-free spectrum, immunity to electromagnetic interference and high-level privacy. However, two rigorous obstacles to achieve high data-rate OWC transmission are the severe nonlinear clipping of transmitter and high-frequency attenuation of OWC system. In this paper, we propose the first interleaved single-carrier frequency-division multiplexing (I-SC-FDM) scheme for OWC systems. Compared with orthogonal frequency-division multiplexing (OFDM), I-SC-FDM has a lower peak-to-average power ratio, which makes it more immune to the nonlinearity clipping in OWC systems. Meanwhile, for the bandwidth-limited OWC systems, I-SC-FDM has better performance on resistance to the serious high-frequency distortion. The simulation results indicate that, under the transmitter nonlinearity and optical-wireless diffuse fading channel, the maximum \(Q^2\) of I-SC-FDM is about 3.44 dB and 3.14 dB higher than that of OFDM when 4-ary quadrature amplitude modulation (4-QAM) and 16-QAM are modulated, respectively. The results show the feasibility and advantages of I-SC-FDM for cost-sensitive OWC systems.


Optical wireless communication Light emitting diode Orthogonal frequency-division multiplexing Peak-to-average power ratio Interleaved single-carrier frequency-division multiplexing 



This work was supported in part by National Natural Science Foundation of China (61771062, 61427813), in part by National Key R&D Program (2016YFB0800302) and in part by Fund of State Key Laboratory of IPOC (BUPT) (No. IPOC2018ZT08), P. R. China.


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Authors and Affiliations

  1. 1.State Key Laboratory of Information Photonics and Optical Communications, School of Information and Communication EngineeringBeijing University of Posts and TelecommunicationsBeijingChina
  2. 2.Department of Electronic Engineering, College of Information Science and TechnologyJinan UniversityGuangzhouChina
  3. 3.Key Laboratory of Trustworthy Distributed Computing and Service, Ministry of Education, School of Cyberspace SecurityBeijing University of Posts and TelecommunicationsBeijingChina
  4. 4.Multimedia Communication and Pattern Recognition Laboratory, School of Information and Communication EngineeringBeijing University of Posts and TelecommunicationsBeijingChina

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