A Superimposed Relaying Strategy and Power Allocation for Outdoor Visible Light Communications | Zendy

Zheng-Guo Sun | Zendy; Hongyi Yu | Zendy; Yi-Jun Zhu | Zendy

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A Superimposed Relaying Strategy and Power Allocation for Outdoor Visible Light Communications

Author(s) -

Zheng-Guo Sun,

Hongyi Yu,

Yi-Jun Zhu

Publication year - 2017

Publication title -

ieee access

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.587

H-Index - 127

ISSN - 2169-3536

DOI - 10.1109/access.2017.2700880

Subject(s) - aerospace , bioengineering , communication, networking and broadcast technologies , components, circuits, devices and systems , computing and processing , engineered materials, dielectrics and plasmas , engineering profession , fields, waves and electromagnetics , general topics for engineers , geoscience , nuclear engineering , photonics and electrooptics , power, energy and industry applications , robotics and control systems , signal processing and analysis , transportation

In this paper, we consider an outdoor visible light communications relaying system in which the relay node needs to transmit both its own information and the information from a source node simultaneously. A superimposed relaying (SR) strategy and the corresponding constellation design are presented. We derive the closed-form dominant term of average bit error rate (BER) for the system, and obtain an optimal power allocation to minimize the average BER. Simulation results demonstrate that SR can improve the error performance of the system significantly.

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