NDLI: Synchronisation algorithm based on zero correlation code pair for OFDM-based VLC systems

Content Provider	IET Digital Library
Author	Qian, Xuewen Deng, Yansha Deng, Honggui Hu, Yue Zhang, Chaoyang Du, Jie
Abstract	Visible light communication (VLC) system based on orthogonal frequency division multiplexing (OFDM) is promising for its ability to link a huge number of devices with high reliability and low latency. However, OFDM-based VLC systems are very sensitive to the symbol timing offsets. Thus, synchronisation algorithm is very important for OFDM-based VLC system. In this study, the authors first propose zero correlation code pair (ZCC pair) and investigate the periodical impulse-shaped correlation property of ZCC pair. Then the authors propose a novel timing offset estimation algorithm based on ZCC pair. The preamble is processed via peak-to-average power ratio (PAPR) reduction algorithms to overcome the PAPR problem in VLC systems. This algorithm achieves high accuracy and has low synchronisation error probability. The effectiveness of the authors’ proposed algorithm has been demonstrated using computer simulation under non-light-of-sight VLC and Gaussian channels. The results show that the authors’ algorithm outperforms the Schmidl Cox's and Park's algorithms in terms of synchronisation error probability and mean square error of timing error.
Starting Page	205
Ending Page	210
Page Count	6
ISSN	17518628
Volume Number	11
e-ISSN	17518636
Issue Number	Issue 2, Jan (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/11/2
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2016.0899
Journal	IET Communications
Publisher Date	2017-01-26
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Computer Simulation Error Statistics Free Space Optical Communication Free Space Optical Link Gaussian Channel Interpolation And Function Approximation Mean Square Error Method Modulation And Coding Method Numerical Analysis OFDM Modulation OFDM-based VLC System Orthogonal Frequency Division Multiplexing System PAPR Problem Peak-to-average Power Ratio Periodical Impulse-shaped Correlation Property Statistics Synchronisation Synchronisation Algorithm Synchronisation Error Probability Timing Offset Estimation Algorithm Visible Light Communication System Zero Correlation Code Pair
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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