| Title | Secure Precoding Aided Spatial Modulation via Transmit Antenna Selection |
| Authors | Huang, Yu Wen, Miaowen Zheng, Beixiong Cheng, Xiang Yang, Liuqing Ji, Fei |
| Affiliation | South China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510641, Guangdong, Peoples R China Peking Univ, Sch Elect Engn & Comp Sci, State Key Lab Adv Opt Commun Syst & Networks, Beijing 100871, Peoples R China Colorado State Univ, Dept Elect & Comp Engn, Ft Collins, CO 80523 USA |
| Keywords | Physical-layer security transmit antenna selection spatial modulation secret precoding finite-alphabet inputs |
| Issue Date | 2019 |
| Publisher | IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY |
| Abstract | 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. |
| URI | http://hdl.handle.net/20.500.11897/545351 |
| ISSN | 0018-9545 |
| DOI | 10.1109/TVT.2019.2930071 |
| Indexed | SCI(E) |
| Appears in Collections: | 信息科学技术学院 区域光纤通信网与新型光通信系统国家重点实验室 |
