Potentiality of a bi-directional system based on 60GHz and VLC technologies for e-health applications Xun Zhang, Rahma Abdaoui, Xun Xu, Fanfan Xu January 2016 Cite Next Potentiality of a bi-directional system based on 60GHz and VLC technologies for e-health applications Previous Uplink wireless transmission overview in bi-directional VLC systems