Work

Multipath-Enhanced Directional Modulation for Secure mmWave On-Body Communication

Year: 2025

Type: article

Abstract: This paper proposes Directional Modulation (DM) for secure millimeter-wave (mmWave) on-body communication, where security is enhanced by leveraging multipath propagation. The double two-ray ground reflection model is employed to analyze a two-antenna Multi-Input Single-Output (MISO) system placed on human skin. The system operates at 24 GHz with polarization tangential to the skin. Key parameters such as antenna-separation, antenna-to-skin spacing and phase difference between transmitter antennas are varied to analyze the resulting path gain. The results obtained from analytical model are experimentally validated using Yagi antennas placed over a forearm phantom. Based on the findings, the DM technique is implemented. The results demonstrate successful demodulation at the intended receiver location with Bit error rate (BER)0.2 for all investigated transmitter–receiver antenna separations. The experimental results confirm the effectiveness and validity of the proposed concept.

Source: IEEE Open Journal of Antennas and Propagation

DOI: 10.1109/ojap.2025.3647297

Authors: Wasi Ur Rehman Khan, Max. J. Ammann, Hossein Raghib Hokmabadi, William G. Scanlon, Adam Narbudowicz

Institutions: Technological University Dublin, University College Cork, Tyndall National Institute, DTU Space, Technical University of Denmark

Language: English

Topic: Wireless Communication Security Techniques

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,075

Funder: Research Ireland