Performance Evaluation of Secured Wiretap Channel With Multi-Antenna Technologies

In this paper, we examine the matter of confidential transmission in the middle of the hosts, above wireless dim environment, within the sight of a wiretapper. The transmitter estimation shows that privacy of information is maintained by delivering “Artificial Noise” along with data so that the wire tapper's channel is affected severely. Mainly two issues are examined: 1) Comparing the confidential ability by using different multiple antenna technologies. 2) Improving the confidential ability by using multi-input multi-output systems (MIMO). The evaluation of secrecy capacity for a binary phase shift keying (BPSK) signal under different antenna technologies is presented. The results show that the confidentiality rate can be improved at the cost of deploying more antennas either at transmitter or at receiver or at both. We have assumed that the transmission matrix of both main channel and wiretap channel are known to the transmitter.