Improving physical-layer security in wireless Communications using diversity techniques


Due to the broadcast nature of radio propagation, wireless transmission can be readily overheard by unauthorized users for interception purposes and is thus highly vulnerable to eavesdropping attacks. To this end, physical-layer security is emerging as a promising paradigm to protect the wireless Communications against eavesdropping attacks by exploiting the physical characteristics of wireless channels. This article is focused on the investigation of diversity techniques to improve physical-layer security differently from the conventional artificial noise generation and beamforming techniques, which typically consume additional power for generating artificial noise and exhibit high implementation complexity for beamformer design. We present several diversity approaches to improve wireless physical-layer security, including multiple-input multiple-output (MIMO), multiuser diversity, and cooperative diversity. To illustrate the security improvement through diversity, we propose a case study of exploiting cooperative relays to assist the signal transmission from source to destination while defending against eavesdropping attacks. We evaluate the security performance of cooperative relay transmission in Rayleigh fading environments in terms of secrecy capacity and intercept probability. It is shown that as the number of relays increases, both the secrecy capacity and intercept probability of cooperative relay transmission improve significantly, implying there is an advantage in exploiting cooperative diversity to improve physical-layer security against eavesdropping attacks.

Did you like this research project?

To get this research project Guidelines, Training and Code... Click Here

PROJECT TITLE : Recommender Systems and Scratch An integrated approach for enhancing computer programming learning ABSTRACT: Learning computer programming is a difficult task. Visual programming languages (VPLs), such as Scratch,
PROJECT TITLE : Using Cost-Sensitive Learning and Feature Selection Algorithms to Improve the Performance of Imbalanced Classification ABSTRACT: The problem of unbalanced data is common in network intrusion detection, spam filtering,
PROJECT TITLE : Improving the Visual Quality of Size-Invariant Visual Cryptography for Grayscale Images An Analysis-by-Synthesis (AbS) Approach ABSTRACT: Picture size reduction leads to poor perceptual quality for the secret image
PROJECT TITLE : A Simple Approach to Enhance the Effectiveness of Passive Currents Balancing in an Interleaved Multiphase Bidirectional DC-DC Converter ABSTRACT: Bidirectional DC-DC converter with interleaving, soft switching
PROJECT TITLE : Overview of Dynamic Voltage Restorer (DVR) for Power Quality Improvement ABSTRACT: In today's world, power quality is a big concern. It has grown increasingly critical, especially with the emergence of complex

Ready to Complete Your Academic MTech Project Work In Affordable Price ?

Project Enquiry