X. Zhou and M. R. Mckay, Secure Transmission with Artificial Noise over Fading Channels: Achievable Rate and Optimal Power Allocation, International Conference Signal Processing and Communication Systems, Omaha, NE, Oct. 2010, pp. 3831-3842.

has been cited by the following article:

• TITLE: Artificial Noise Based Security Algorithm for Multi-User MIMO System

  AUTHORS: Jian-hua Peng, Kai-zhi Huang, Jiang Ji

  KEYWORDS: Multi-user MIMO System; Joint Channel State Matrix; Secrecy Capacity; Artificial Noise; Physical Layer Security

  JOURNAL NAME: Communications and Network, Vol.5 No.3C, November 8, 2013

  ABSTRACT: The existing physical layer security algorithm, which is based on artificial noise, could affect legitimate receivers negatively when the number of users is no less than sending antennas in multi-user MIMO system. In order to improve security of multi-user MIMO system under this scenario, we propose a new multi-user MIMO system physical layer security algorithm based on joint channel state matrix. Firstly, multiple users are processed together, thus a multi-user joint channel state matrix is established. After achieving Singular Value Decomposition (SVD) of the joint channel state matrix, the minimum singular value is obtained, which can be utilized for precoding to eliminate the interference of artificial noise to legitimate receivers. Further, we also present an approach to optimize the power allocation. Simulation results show that the proposed algorithm can increase secrecy capacity by 0.1 bit/s/HZ averagely.