Distortion compensation with clustering algorithm in a MISO VLC system

摘要

In this paper, we propose a modified K-means algorithm to mitigate both linear and nonlinear impairments in the multiple input single output (MISO) visible light communication (VLC) system. By presenting a novel dimming control scheme at the transmitter, various superimposed constellation structures are generated at the receiver end. Meanwhile, a table is generated, after looking up the superimposed signals in this table; we separate them to recover the transmitted signals. Then we can realize the spatial multiplexing. Experiments demonstrate that we achieve a data rate of 1.5 Gb/s with the measured bit error rates (BERs) is under 7% pre-forward error correction (pre-FEC) limit of 3.8 x 10(-3 )in 1.3-m indoor.