Journal on Communications ›› 2020, Vol. 41 ›› Issue (9): 179-189.doi: 10.11959/j.issn.1000-436x.2020179

• Papers • Previous Articles     Next Articles

Design and research of adaptive O-OFDM symbol decomposing with serial transmission system in visible light communication

Kejun JIA1,Boran YANG1,Minghua CAO1,Suoping LI2,Li HAO3   

  1. 1 School of Computer and Communication,Lanzhou University of Technology,Lanzhou 730050,China
    2 School of Science,Lanzhou University of Technology,Lanzhou 730050,China
    3 School of Information Science and Technology,Southwest Jiaotong University,Chengdu 610031,China
  • Revised:2020-08-05 Online:2020-09-25 Published:2020-10-12
  • Supported by:
    The National Natural Science Foundation of China(61461026);The Natural Science Foundation of Gansu Province(18JR3RA153)

Abstract:

Iterative signal clipping (ISC) and symbol decomposing with serial transmission (SDST) techniques decompose optical orthogonal frequency division multiplexing (O-OFDM) symbol into the fixed number of multiple small-amplitude symbols.However,at low O-OFDM symbol variances,the decomposition symbols contain a large amount of all-zero symbols without load information,which results in bit error rate degradation,optical power penalty and information rate reduction.Aim at this problem,an adaptive O-OFDM symbol decomposing with serial transmission (ASDST) system was proposed,the symbol decomposition was adaptively determined according to the O-OFDM symbol amplitude.Symbol decomposition was terminated until O-OFDM symbol was completely decomposed or the maximum symbol decomposition times were attained,thereby eliminated all-zero symbols and reduced the average symbol decomposition times.The performance of ASDST system was verified by theoretical analysis and Monte Carlo simulation.

Key words: visible light communication, O-OFDM, symbol decomposing with serial transmission, adaptive technique

CLC Number: 

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