Systems Engineering and Electronics ›› 2021, Vol. 43 ›› Issue (6): 1692-1698.doi: 10.12305/j.issn.1001-506X.2021.06.29

• Communications and Networks • Previous Articles     Next Articles

Secure beamforming method for the MISO SWIPT system

Bing FANG*, Bing HAN   

  1. Army Command College of PLA, Nanjing 210045, China
  • Received:2020-06-08 Online:2021-05-21 Published:2021-05-28
  • Contact: Bing FANG

Abstract:

To solve the information security issue in the multiple input single output (MISO) simultaneous wireless information and power transfer (SWIPT) system, an artificial noise (AN)-aided beamforming scheme is proposed, and further formulating the problem as a power control problem under user requirement constraint. However, this problem is of huge non-convex complexity and cannot be solved in polynomial time. Therefore, an efficient two-tier algorithm is developed for a sub-optimal solution, which is extended further to the imperfect channel conditions for a robust beamforming scheme. Simulation results show that the two-tier algorithm has better performance and more robustness when compared with the classic zero-forcing (ZF) algorithm, and the advantage of it is more obvious as the channel estimation error increases.

Key words: simultaneous wireless information and power transfer (SWIPT), physical layer security, beam forming, semi-definite programming (SDP), robust optimization

CLC Number: 

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