Abstract
The particularity of security threats for multi-tier heterogeneous cellular networks (HCNs) is causedby the nonuniformity between the tiers and the complex and unplanned topology. To promote the study of secrecy transmission in HCNs, we utilize stochastic geometry tools and physical-layer security technologies to obtain theexpressions for the secrecy coverage probability and average secrecy rate under different scenarios such as nocooperation, only macrocell base stations (MBSs) involved in cooperation, all base stations (BSs) involved incooperation, and with/without channel measurements between the cooperative BSs and the mobile users. Furthermore,we simulate and analyze the influences on security performance caused by the fraction of transmit powerused for transmitting artificial noise, the fraction of cooperative power used for transmitting artificial noise, thesecrecy rate threshold, the number of transmission antennas for an MBS, and the eavesdropper density. Basedon the simulation results, we propose a security-performance-oriented strategy for cooperative transmission andjamming in HCN.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
