Abstract
Conference Title: 2016 IEEE Global Conference on Signal and Information Processing (GlobalSIP) Conference Start Date: 2016, Dec. 7 Conference End Date: 2016, Dec. 9 Conference Location: Washington DC, DC, USA We investigate in this paper the achievable secrecy rate of the multiple-input single-output (MISO) visible light communication (VLC) Gaussian wiretap channel with single user and single eavesdropper. We consider the cases when the location of eavesdropper is known or unknown to the transmitter. In the former case, we derive the optimal beamforming in closed form, subject to constrained inputs. In the latter case, we apply robust beamforming. Furthermore, we study the achievable secrecy rate when the input follows the truncated generalized normal (TGN) distribution. We present several examples which demonstrate the substantial improvements in the secrecy rates achieved by the proposed techniques.