Paper Info
Title
Biased Beamforming for Multi-LED OFDM in Visible Light Communications.
Abstract
This paper proposes a novel concept of biased beamforming to explore the full potential of multicarrier visible light communication (VLC) systems equipped with multiple light-emitting diodes (LEDs). Biased beamforming requires joint optimization of both: a direct current bias on each LED and a beamforming vector on each subcarrier. We first analyze the impact of clipping in multi-LED multicarrier systems, before carrying out the joint optimization of beamforming and biasing. We derive the optimal biased beamforming in closed form, along with several critical insights that are helpful for practical systems. The proposed biased beamforming strategy outperforms existing solutions, as shown by our simulation results.
Year
Venue
Field
2017
IEEE Global Communications Conference
Subcarrier,Beamforming,Computer science,Integrated optics,Real-time computing,Visible light communication,Electronic engineering,Optical refraction,Orthogonal frequency-division multiplexing,Optical receivers
DocType
ISSN
Citations 
Conference
2334-0983
0
PageRank 
References 
Authors
0.34
0
6
Name
Order
Citations
PageRank
Ling, X.1246.48
Jiaheng Wang277151.96
Xiao Liang34410.89
Zhi Ding4492136.76
Chunming Zhao567164.30
Xiqi Gao63043217.05