Physical layer security based on artificial noise and spatial modulation. - Zhenzhen Gao; Hequn Hu; Duhuo Cheng; Jing Xu 003; Xiaodong Sun (WCSP, 2016)

Secure Transmission via a Wireless-Powered Untrusted Relay in Underlay CRNs. - Hequn Hu; Zhenzhen Gao; Chao Zhang; Xuewen Liao (GLOBECOM Workshops, 2017)

Secure Communications in CIoT Networks with a Wireless Energy Harvesting Untrusted Relay. - Hequn Hu; Zhenzhen Gao; Xuewen Liao; Victor C. M. Leung (Sensors, 2017)

Securing Secondary Transmission in Cognitive Radio Networks Using Random Beamforming. - Shaozhuang Bai; Zhenzhen Gao; Hequn Hu; Xuewen Liao (ICCS, 2018)