Linear Precoding with Friendly Jamming in Overloaded MU-MIMO Wiretap Networks

Peyman Siyari, Marwan Krunz

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We consider the downlink of a multiuser MIMO (MU-MIMO)network in the presence of an external eavesdropper (Eve). No knowledge of Eve's location is assumed at the access point (Alice). The information signals for downlink users (Bobs)are accompanied by bogus signals (a.k.a. friendly jamming)that are generated from Alice. The network is studied in underloaded and overloaded conditions. In an underloaded (overloaded)network, the number of antennas at Alice is larger (smaller)than the total number of Bobs' antennas. In the overloaded setting, traditional methods of creating friendly jamming (FJ), such as zero-forcing-based methods, are infeasible. We propose a linear precoding scheme that relaxes such infeasibility in overloaded MU-MIMO networks. In the worst-case scenario where Eve has knowledge of the channels between Alice and Bobs, we show that our method imposes the most stringent condition on the number of antennas required at Eve to cancel out FJ signals. We verify our analysis with simulations. It turns out that choosing the number of data streams has an important role in achieving a tradeoff between security, reliability, and the achievable rate.

Original languageEnglish (US)
Title of host publication2019 IEEE Conference on Communications and Network Security, CNS 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538671177
DOIs
StatePublished - Jun 2019
Event2019 IEEE Conference on Communications and Network Security, CNS 2019 - Washington, United States
Duration: Jun 10 2019Jun 12 2019

Publication series

Name2019 IEEE Conference on Communications and Network Security, CNS 2019

Conference

Conference2019 IEEE Conference on Communications and Network Security, CNS 2019
CountryUnited States
CityWashington
Period6/10/196/12/19

Keywords

  • Multiuser MIMO
  • friendly jamming
  • linear precoding
  • physical-layer security

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Hardware and Architecture
  • Information Systems and Management
  • Safety, Risk, Reliability and Quality

Fingerprint Dive into the research topics of 'Linear Precoding with Friendly Jamming in Overloaded MU-MIMO Wiretap Networks'. Together they form a unique fingerprint.

  • Cite this

    Siyari, P., & Krunz, M. (2019). Linear Precoding with Friendly Jamming in Overloaded MU-MIMO Wiretap Networks. In 2019 IEEE Conference on Communications and Network Security, CNS 2019 [8802693] (2019 IEEE Conference on Communications and Network Security, CNS 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CNS.2019.8802693