Security in MIMO OSFBC OFDM System Over $\alpha-\mu$ Fading Channels

This paper considers a secure communication through multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system employing orthogonal space-frequency block coding (OSFBC) in
$\alpha-\mu$
fading scenario over frequency selective fading channel. The authors are intended to protect the signals from eavesdropping in consideration of the effect of fading parameters
$\alpha$
and
$\mu$
. On the basis of closed-form analytical expressions for the probability of non-zero secrecy capacity (PNSC) and the secure outage probability (SOP), in this paper, authors developed a mathematical model to ensure the security in the presence of single eavesdropper. The developed model helps to understand the effects of system parameters. The results show that the security in the proposed model is sensitive to the fading parameters and this effect is high for the upper values of signal to noise ratio of the main channel.