  Visible light communication (VLC) is an emerging technology and considered as
an alternative to overcome some of the disadvantages of radio frequency
communication technology in an indoor environment. However, the line of sight
nature of the technology limits the user mobility and create new challenges to
provides seamless network coverage under user mobility scenarios. In VLC multi
access points and multi cell based network, co channel interference (CCI)
between neighbor cells limits the overall performance. Therefore, by following
the already existing VLC handover systems, this statistical parameter based
novel handover method is designed. This paper proposes a handover mechanism for
indoor VLC systems by introducing cell ID bits and statistical kurtosis values
of the cell ID waveforms as metric for the handover initiation. As advantage of
the method, effects from the CCI can be eliminate when measuring signal
strengths in the signal overlapping cell boundary area. Also the handover
criteria are adoptive to the different ambient lighting conditions compared to
existing pre-configured light intensity threshold based handover systems. With
the use of bit error rate (BER), the experiment results showed that Kurtosis
value of the cell ID waveforms can be used as metric to initiate network
handover in indoor VLC systems.
