TY - JOUR AU1 - Hong, Sheng AU2 - Pan, Cunhua AU3 - Ren, Hong AU4 - Wang, Kezhi AU5 - Nallanathan, Arumugam AU6 - AB - IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 68, NO. 12, DECEMBER 2020 7851 Artificial-Noise-Aided Secure MIMO Wireless Communications via Intelligent Reflecting Surface Sheng Hong , Cunhua Pan , Member, IEEE, Hong Ren , Kezhi Wang , Senior Member, IEEE, and Arumugam Nallanathan , Fellow, IEEE Abstract— This article considers an artificial noise (AN)-aided communication environment becomes increasingly compli- secure MIMO wireless communication system. To enhance the cated and the security of private information is imperative. system security performance, the advanced intelligent reflecting The information security using crytographic encryption (in surface (IRS) is invoked, and the base station (BS), legitimate the network layer) is a conventional secure communication information receiver (IR) and eavesdropper (Eve) are equipped technique, which suffers from the vulnerabilities, such as with multiple antennas. With the aim for maximizing the secrecy rate (SR), the transmit precoding (TPC) matrix at the BS, secret key distribution, protection and management [2]. Unlike covariance matrix of AN and phase shifts at the IRS are jointly this network layer security approach, the physical layer secu- optimized subject to constrains of transmit power limit and rity can guarantee good security performance bypassing the unit modulus of IRS phase shifts. Then, the secrecy rate max- relevant TI - Artificial-Noise-Aided Secure MIMO Wireless Communications via Intelligent Reflecting Surface JF - IEEE Transactions on Communications DO - 10.1109/tcomm.2020.3024621 DA - 2020-12-01 UR - https://www.deepdyve.com/lp/unpaywall/artificial-noise-aided-secure-mimo-wireless-communications-via-wxiKqfRSj0 DP - DeepDyve ER -