A NEW LOOK AT SECRECY CAPACITY OF MIMOME USING ARTIFICIAL NOISE FROM ALICE AND BOB WITHOUT KNOWLEDGE OF EVE’S CSI

摘要

This study investigates a secure wireless communication scheme which combines two of the most effective strategies to combat (passive) eavesdropping, namely mixing information with artificial noise at the transmitter and jamming from a full-duplex receiver. All nodes are assumed to possess multiple antennas, which is known as a MIMOME network. The channel state information (CSI) of Eve is known to Eve but not to Alice and Bob. While such setup has been investigated in related works, new and important insights are revealed in this work. We investigate the design of optimal jamming parameters to achieve higher secrecy, and in particular we focus on two important cases corresponding to Bob using either a simple jamming or a smart jamming. Furthermore, simulations are presented to highlight the effectiveness of the proposed strategies.