Security-Enhanced SC-FDMA Transmissions Using Temporal Artificial-Noise and Secret-Key Aided Schemes

by   Mohamed F. Marzban, et al.

We investigate the physical layer security of uplink single-carrier frequency-division multiple-access (SC-FDMA) systems. Multiple users, Alices, send confidential messages to a common legitimate base-station, Bob, in the presence of an eavesdropper, Eve. To secure the legitimate transmissions, each user superimposes an artificial noise (AN) signal on the time-domain SC-FDMA data block. We reduce the computational and storage requirements at Bob's receiver by assuming simple per-subchannel detectors. We assume that Eve has global channel knowledge of all links in addition to high computational capabilities, where she adopts high-complexity detectors such as single-user maximum likelihood (ML), multiuser minimum-mean-square-error (MMSE), and multiuser ML. We analyze the correlation properties of the time-domain AN signal and illustrate how Eve can exploit them to reduce the AN effects. We prove that the number of useful AN streams that can degrade Eve's signal-to-noise ratio (SNR) is dependent on the channel memories of Alices-Bob and Alices-Eve links. Furthermore, we enhance the system security for the case of partial Alices-Bob channel knowledge at Eve, where Eve only knows the precoding matrices of the data and AN signals instead of knowing the entire Alices-Bob channel matrices, and propose a hybrid scheme that integrates temporal AN with channel-based secret-key extraction.


page 1

page 2

page 3

page 4


An Artificial-Noise-Aided Secure Scheme for Hybrid Parallel PLC/Wireless OFDM Systems

We investigate the physical-layer security of indoor hybrid parallel pow...

A Hybrid Artificial-Noise and Secret-Key Scheme for Securing OFDM Transmissions in V2G Networks

We propose a new scheme to enhance the physical-layer security of wirele...

ANN-Based Detection in MIMO-OFDM Systems with Low-Resolution ADCs

In this paper, we propose a multi-layer artificial neural network (ANN) ...

High SNR Analysis of RIS aided MIMO BC Channels

We analyze the influence of an reconfigurable intelligent surface (RIS) ...

Approaching Capacity Without Pilots via Nonlinear Processing at the Edge

A nonlinear detector derived within a maximum likelihood estimation fram...

Single Carrier Frequency Domain Detectors for Internet of Underwater Things

This paper proposes low complexity detection for internet of underwater ...

Please sign up or login with your details

Forgot password? Click here to reset