  Providing high data rates is one of the drivers in visible light
communication (VLC) systems. This paper introduces a VLC system that employs
transmitters diversity with beam steering to provide high data rates. In this
work, red, yellow, green, and blue (RYGB) laser diodes (LD) are used as
transmitters to obtain a high modulation bandwidth. Two types of RYGB LDs units
are used in this paper: transmitters diversity (TD) RYGB LDs light unit (for
illumination and communication) and RYGB LDs light unit (for illumination). In
addition, a seven branch angle diversity receiver (ADR) is used where we study
the delay spread and SNR. The proposed system was compared to the normal VLC
system. A data rate up to 22.8 Gb/s was achieved using simple on-off-keying
(OOK) modulation.
