Secure Precise Wireless Transmission with Random-Subcarrier-Selection-based Directional Modulation Transmit Antenna Array
Feng Shu, Xiaomin Wu, Jinsong Hu, Riqing Chen, and Jiangzhou Wang

TL;DR
This paper introduces RSCS-OFDM-DM, a low-complexity wireless scheme that ensures secure, precise transmission of confidential messages by concentrating power around the intended receiver and minimizing leakage to eavesdroppers.
Contribution
It proposes a novel secure transmission scheme combining OFDM, directional modulation, and random subcarrier selection for enhanced security and precision in wireless communication.
Findings
Confidential message power concentrates near the receiver.
Eavesdropper interception probability is significantly reduced.
Derived SINR distribution and secrecy rate expressions.
Abstract
In this paper, a practical wireless transmission scheme is proposed to transmit confidential messages to the desired user securely and precisely by the joint use of multiple techniques including artificial noise (AN) projection, phase alignment (PA)/beamforming, and random subcarrier selection (RSCS) based on OFDM, and directional modulation (DM), namely RSCS-OFDM-DM. This RSCS-OFDM-DM scheme provides an extremely low-complexity structures for the transmitter and desired receiver and makes the secure and precise wireless transmission realizable in practice. For illegal eavesdroppers, the receive power of confidential messages is so weak that their receivers cannot intercept these confidential messages successfully once it is corrupted by AN. In such a scheme, the design of phase alignment/beamforming vector and AN projection matrix depend intimately on the desired direction angle and…
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Taxonomy
TopicsWireless Communication Security Techniques · Cooperative Communication and Network Coding · Antenna Design and Analysis
