| Title |
A Study on the Recovery of Errors by Shadow Effect in 16×16 Solar Panel MIMO VLC System |
| Authors |
Jong-Yong Park ; Minh-Trung Pham ; Jae-Sang Cha |
| DOI |
http://doi.org/10.5207/JIEIE.2020.34.11.008 |
| Keywords |
MIMO; MATLAB; Solar Panel; Spatial Burst Error Recovery; Visual Light Communication |
| Abstract |
Solar panels are installed on roads and sidewalks as well as on roofs and outer walls of buildings to produce electrical energy from the sun's light. Adding a module to an existing solar panel can enable visible light communication(VLC) and provide more expanded services using LED on street lamp or car headlights. However, the shadows by people, street trees, cars, etc. in the external environment causes communication errors in VLC. The shadows are spatially shaped like a block and it brings serious performance degradation in MIMO VLC which is used for high-speed communication. This paper proposes the method of recovering 4bit of Spatial Burst Error caused by the shadows across four adjacent solar panels in 16×16 MIMO VLC. To recover errors from the shadows, we select 4 solar panels that are not adjacent to each other and make it into a block. A block consists of three data channels and one recovery channel. The recovery channel transmits the parity value of the data channels in the same block. In addition, This paper presents a Half Power Angle(Theta) of LEDs to prevent inter-channel interference of Spatial Multiplex MIMO. |