SVD-Aided Multi-Beam Directional Modulation Scheme Based on Frequency Diverse Array

TL;DR

This paper introduces a novel SVD-assisted multi-beam directional modulation scheme using symmetrical multi-carrier FDA, achieving secure range-angle dependent transmissions with lower complexity and memory requirements.

Contribution

It presents a new SVD-based DM scheme that reduces complexity and memory use compared to traditional zero-forcing methods in frequency diverse arrays.

Findings

Achieves secure range-angle dependent transmissions.

Reduces computational complexity and memory usage.

Maintains high secrecy rate with minimal penalty.

Abstract

With the assistance of singular value decomposition (SVD), a multi-beam directional modulation (DM) scheme based on symmetrical multi-carrier frequency diverse array (FDA) is proposed. The proposed DM scheme is capable of achieving range-angle dependent physical layer secure (PLS) transmissions in free space with much lower complexity than the conventional zero-forcing (ZF) method. Theoretical and simulated results about secrecy rate and complexity verify the improved computational efficiency and considerable memory savings despite a very small penalty of secrecy rate.