Telecommunications Science ›› 2017, Vol. 33 ›› Issue (9): 36-43.doi: 10.11959/j.issn.1000-0801.2017210

• research and development • Previous Articles     Next Articles

Performance analysis of secrecy rate for SWIPT in massive antenna

Hui BAO,Minmin ZHANG,Yaqing YAO,Hui WANG   

  1. North China Electric Power University,Baoding 071003,China
  • Revised:2017-06-28 Online:2017-09-01 Published:2017-09-11
  • Supported by:
    The National Natural Science Foundation of China(61501185);The National Natural Science Foundation of China(61302105);Beijing Natural Science Foundation of China(4164101);Hebei Provincial Natural Science Foundation of China(F2016502062)

Abstract:

In the multi-drop broadcast system,the existing research is to optimize the single-user security rate in the complete channel state information.In fact,it’s impossible that there exists only one user in the system.The base station often receives incomplete channel state information.Aiming at this problem,a robust beamforming scheme was proposed.In the multi-user case,considering the influence of channel estimation error on the system security rate,the particle swarm optimization algorithm was used to optimize the emission beamforming vector,artificial noise covariance and power split ratio to ensure that the user collects a certain energy while maximizing the safe transmission rate.The simulation results show that the proposed scheme is slightly lower than the security rate in the ideal case,but it is meaningful to the actual system,taking into account the existence of eavesdropping users and the estimation error.

Key words: simultaneous wireless information and power transfer, artificial noise, estimation error, safety rate, beamforming

CLC Number: 

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