Spatial Modulation Aided Physical Layer Security for NOMA-VLC Systems

Loading...
Thumbnail Image

Date

2023

Authors

Koca, Mutlu
Haas, Harald
Poor, H. Vincent

Journal Title

Journal ISSN

Volume Title

Publisher

IEEE-Inst Electrical Electronics Engineers Inc

Open Access Color

OpenAIRE Downloads

OpenAIRE Views

Research Projects

Organizational Units

Journal Issue

Abstract

We consider the physical layer security (PLS) problem in multi-user non-orthogonal multiple access (NOMA) enabled multiple-input multiple-output (MIMO) visible light communication systems intercepted by a passive eavesdropper (Eve). We propose a novel transmit precoding scheme based on receive spatial modulation (RSM) to degrade the signal-to-interference-noise ratio (SINR) of Eve by exploiting only the slow-fading characteristics of the visible light channel of the legitimate users (Bobs). The proposed PLS precoder is reinforced with secret parameter exchange with Bobs and a CSI acquisition model is proposed to reduce the PLS algorithm's computational load substantially at the transmitter. The closed-form expressions for the achievable secrecy rates and their upper and lower bounds are derived. Via Monte Carlo simulations, we confirm that Bobs can successfully decode their information in various user configurations while Eve's received SINR is significantly worsened by the jamming signal induced by the proposed precoder with secret key exchange. It is also shown that Eve's bit error rate (BER) is increased to the 0.5-level for almost any position in the considered indoor environment. Finally, we corroborate the derived secrecy expressions by computer simulations and show that the proposed scheme provides PLS for Bobs.

Description

Keywords

Nonorthogonal Multiple-Access, Wireless Communications, Mimo, Transmission, Opportunities, Technologies, Performance, Challenges, Networks, Nonorthogonal Multiple-Access, Wireless Communications, Mimo, Transmission, Opportunities, Technologies, Non-orthogonal multiple access, Performance, physical layer security, Challenges, precoding, Networks, visible light communication

Turkish CoHE Thesis Center URL

Fields of Science

Citation

2

WoS Q

Q1

Scopus Q

Q1

Source

Ieee Transactions on Vehicular Technology

Volume

72

Issue

8

Start Page

10286

End Page

10301