Secure Precoding Aided Spatial Modulation via Transmit Antenna Selection

Yu Huang, Miaowen Wen, Beixiong Zheng, Xiang Cheng, Liuqing Yang, Fei Ji

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


In this paper, two transmit antenna selection schemes are proposed for precoding-aided spatial modulation (PSM) to enhance the secrecy performance with reduced hardware complexity. The first strategy is determined by the channel state information (CSI) of both the legitimate and illegitimate links, called deterministic antenna selection based PSM (DAS-PSM), which selects partial transmit antennas to implement zero-forcing (ZF) precoding for maximizing the secrecy rate. For practical implementation, the low-complexity DAS-PSM criterion is demonstrated. The second strategy resorts to random antenna selection (RAS) with the aid of fast radio-frequency switching. Different from the DAS-PSM, this so-called RAS based PSM (RAS-PSM) dispenses with the CSI of the wiretap channel, which generates the ZF precoding matrix associated with randomly selected transmit antenna combination during each symbol period, creating additional turbulence that solely affects the eavesdropper. To combat the issue of low secrecy rate in the high signal-to-noise ratio regime due to the finite-alphabet inputs, time-varying artificial noise with extra power can be incorporated into both aforementioned strategies, which is exemplified in the RAS-PSM. Finally, the secrecy rates of both proposed schemes are theoretically analyzed and evaluated via Monte Carlo simulations, demonstrating that both proposed schemes with different requirements are capable of enhancing the secrecy performance compared to the conventional PSM.

Original languageEnglish (US)
Article number8768073
Pages (from-to)8893-8905
Number of pages13
JournalIEEE Transactions on Vehicular Technology
Issue number9
StatePublished - Sep 2019
Externally publishedYes


  • finite-alphabet inputs
  • Physical-layer security
  • secret precoding
  • spatial modulation
  • transmit antenna selection

Fingerprint Dive into the research topics of 'Secure Precoding Aided Spatial Modulation via Transmit Antenna Selection'. Together they form a unique fingerprint.

Cite this