Multiple Access Schemes for Visible Light Communication

Visible light communication (VLC) is an emerging technology which can provide ubiquitous connectivity for the fifth generation wireless communication and beyond. For a densely deployed VLC network, multiple access control is an important issue while supporting massive users. Several MA schemes have been proposed in recent works to improve maximum throughput and an increasing number of connected channels. In this paper, we provided an overview of various orthogonal and non-orthogonal MA schemes applied for VLC networks. We make a comparison of the schemes according to their achievable maximum user data rate and bit error probability. Moreover, hybrid schemes are considered in this paper to improve the sum rate of the system.