On Modeling of Spatial Discrete Multi-Tone MIMO Optical Channel

ABSTRACT The Multiple-input Multiple-Output (MIMO) wireless optical communications are studied in previous work. The spatial discrete multi-tone (SDMT) modulation technique is investigated in terms of its channel model and its capacity. This paper focuses on the capability of SDMT spatial modulation to combat the low pass spatial channel, where, a dynamic range compression technique was applied to exploit unused spatial frequency bins to reduce the peak value of output signals? thereby reducing clipping noise.