Visible to the public A Novel Physical Layer Security Technique Using Master-Slave Full Duplex Communication

TitleA Novel Physical Layer Security Technique Using Master-Slave Full Duplex Communication
Publication TypeConference Paper
Year of Publication2019
AuthorsEbrahimi, Najme, Yektakhah, Behzad, Sarabandi, Kamal, Kim, Hun Seok, Wentzloff, David, Blaauw, David
Conference Name2019 IEEE MTT-S International Microwave Symposium (IMS)
KeywordsBER, Bit error rate, bit-error rate, communication reliability, composability, computer network reliability, computer network security, directional antennas, directive antennas, error statistics, Eve location, full-duplex, full-duplex manner, high power signal, Interference, interference masks, Internet of Things, Internet-of-Things networks, IoT networks, IoT node, legitimate intended nodes, Master-slave communication, master-slave full duplex communication node, Metrics, omnidirectional antenna, omnidirectional antennas, Phase modulation, phase-modulated random key-data generation, physical layer security, physical layer security technique, pubcrawl, received signal, Receivers, receiving antennas, reliability, resilience, Resiliency, security, self-interference cancellation, signal transmission
AbstractIn this work we present a novel technique for physical layer security in the Internet-of-Things (IoT) networks. In the proposed architecture, each IoT node generates a phase-modulated random key/data and transmits it to a master node in the presence of an eavesdropper, referred to as Eve. The master node, simultaneously, broadcasts a high power signal using an omni-directional antenna, which is received as interference by Eve. This interference masks the generated key by the IoT node and will result in a higher bit-error rate in the data received by Eve. The two legitimate intended nodes communicate in a full-duplex manner and, consequently, subtract their transmitted signals, as a known reference, from the received signal (self-interference cancellation). We compare our proposed method with a conventional approach to physical layer security based on directional antennas. In particular, we show, using theoretical and measurement results, that our proposed approach provides significantly better security measures, in terms bit error rate (BER) at Eve's location. Also, it is proven that in our novel system, the possible eavesdropping region, defined by the region with BER \textbackslashtextless; 10-1, is always smaller than the reliable communication region with BER \textbackslashtextless; 10-3.
Citation Keyebrahimi_novel_2019