Enhancement of Physical Layer Security Using Destination Artificial Noise Based on Outage Probability
This addresses security in wireless communication networks for scenarios with passive eavesdroppers, but it is incremental as it builds on existing artificial noise techniques.
The paper tackles enhancing physical layer security by using Destination Artificial Noise alongside Source Artificial Noise to reduce power consumption while guaranteeing a minimum outage probability at an eavesdropper and ensuring a certain SNR at the destination. Simulation results show significant power savings compared to methods using only Source Artificial Noise for the same outage probability.
In this paper, we study using Destination Artificial Noise (DAN) besides Source Artificial Noise (SAN) to enhance physical layer secrecy with an outage probability based approach. It is assumed that all nodes in the network (i.e. source, destination and eavesdropper) are equipped with multiple antennas. In addition, the eavesdropper is passive and its channel state and location are unknown at the source and destination. In our proposed scheme, by optimized allocation of power to the SAN, DAN and data signal, a minimum value for the outage probability is guaranteed at the eavesdropper, and at the same time a certain level of signal to noise ratio (SNR) at the destination is ensured. Our simulation results show that using DAN along with SAN brings a significant enhancement in power consumption compared to methods that merely adopt SAN to achieve the same outage probability at the eavesdropper.