  Infrared (IR) uplinks can achieve high data rates, which are essential in a
range of applications. This paper introduces a novel approach to enable data
centre uplink communication. We introduce a novel method to enable
communication between racks and spine switches. In our proposed data centre, we
consider three racks, each of which has its own angle diversity transmitter
(ADT) that is located on top of the rack. Four wide field of view receivers are
fixed to the ceiling of the data centre. Each such receiver is connected to a
spine switch. We evaluate the performance of our proposed system when each link
operates at a data rate above 2.8 Gb/s. Multiple links can be used to achieve
higher data rates using the space or wavelength dimensions. The results show
that our proposed system has the ability to work at a high data rate with good
performance while using simple on-off-keying.
