Constellation-Overlapping-Based Secure Transmission for Two-Way Untrusted Relaying: Method, Implementation, and Experimental Results

摘要

In this letter we present a physical-layer-security (PLS) experimental platform that realizes secure transmission over a two-way untrusted relaying system. A novel PLS approach called constellation overlapping is adopted to provide both confidentiality and reliability, and sophisticated protocols are developed as well to implement synchronization, channel state information (CSI) acquisition, self-interference cancellation, and signal recovery. Experimental results in the indoor environment are shown to demonstrate the effectiveness of our design.