Journal on Communications ›› 2020, Vol. 41 ›› Issue (10): 156-171.doi: 10.11959/j.issn.1000-436x.2020155

• Papers • Previous Articles     Next Articles

Design of precoding matrices in MIMO full duplex two-way security communication system

Weijia LEI1,2,Yang ZHOU1,2,Xianzhong XIE3,Hongjiang LEI1,4   

  1. 1 School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China
    2 Chongqing Key Laboratory of Mobile Communications Technology,Chongqing,400065,China
    3 School of Optoelectronic Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China
    4 Shaanxi Key Laboratory of Information Communication Network and Security,Xi’an University of Posts and Telecommunications,Xi’an 710121,China
  • Revised:2020-06-28 Online:2020-10-25 Published:2020-11-05
  • Supported by:
    The National Nature Science Foundation of China(61971080);Chongqing Research Program of Basic Research and Frontier Exploration(cstc2017jcyjAX0204);Chongqing Research Program of Basic Research and Frontier Exploration(cstc2018jcyjAX0432);Key Project of Science and Technology Research of Chongqing Education Commission(KJZD-K201800603);Key Project of Science and Technology Research of Chongqing Education Commission(KJZD-M201900602);Open Fund of the Shaanxi Key Laboratory of Information Communication Network and Security(ICNS201807)

Abstract:

The design of precoding matrices was studied in the multiple input multiple output (MIMO) full-duplex two-way security communication system where legitimate nodes transmit the confidential information accompanied by the artificial noise while receiving information.For the scenario where the perfect channel state information (CSI) of legitimate channels and eavesdropping channels was available,the difference of concave/convex (DC) programming was used to optimize the precoding matrices of the information signal and the artificial noise for the maximization of the secrecy sum rate.For the scenario where the CSI was imperfect,the channels were modeled by using worst-case criterion and the weighted minimum mean square error algorithm was used to get the robust precoding matrices of the information signal and the artificial noise.The simulation results prove that the proposed algorithm can effectively promote the secrecy sum rate of the system.

Key words: physical layer security, MIMO, artificial noise, full duplex, two-way communication, precoding matrix

CLC Number: 

No Suggested Reading articles found!