中国邮电高校学报(英文) ›› 2021, Vol. 28 ›› Issue (2): 89-96.doi: 10.19682/j.cnki.1005-8885.2021.1008

• Wireless • 上一篇    

New spatial quadrature modulation scheme for indoor visible light communication systems

Li Zongyan, Li Jiahui, Yu Honglu, Li Shiyin   

  1. School of Information and Control Engineering, China University of Mining and Technology, Xuzhou 221116, China
  • 收稿日期:2019-06-17 修回日期:2020-12-15 出版日期:2021-04-30 发布日期:2021-04-30
  • 通讯作者: Li Zongyan E-mail:lizongyan@cumt.edu.cn

New spatial quadrature modulation scheme for indoor visible light communication systems 

Li Zongyan, Li Jiahui, Yu Honglu, Li Shiyin   

  1. School of Information and Control Engineering, China University of Mining and Technology, Xuzhou 221116, China
  • Received:2019-06-17 Revised:2020-12-15 Online:2021-04-30 Published:2021-04-30

摘要: In this paper, a new spatial quadrature modulation ( NSQM ) scheme is proposed to improve the error
performance of indoor visible light communication ( VLC) systems. NSQM is different from generalized spatial
quadrature modulation ( SQM) in two aspects. First, the transmitted optical signal is directly detected at the
receiver, which does not need to estimate the indices of the transmitted antenna. Second, an optimization approach
is used with NSQM to minimize the upper error bound of the transmitted signals. In addition, several NSQM
schemes are described in detail. Numerical results show that the proposed NSQM scheme achieves superior error
performance compared with the SQM scheme.

关键词: visible light communication (VLC), new spatial quadrature modulation (NSQM), upper bound

Abstract: In this paper, a new spatial quadrature modulation ( NSQM ) scheme is proposed to improve the error
performance of indoor visible light communication ( VLC) systems. NSQM is different from generalized spatial
quadrature modulation ( SQM) in two aspects. First, the transmitted optical signal is directly detected at the
receiver, which does not need to estimate the indices of the transmitted antenna. Second, an optimization approach
is used with NSQM to minimize the upper error bound of the transmitted signals. In addition, several NSQM
schemes are described in detail. Numerical results show that the proposed NSQM scheme achieves superior error
performance compared with the SQM scheme.

Key words: visible light communication (VLC), new spatial quadrature modulation (NSQM), upper bound 

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