Ergodic secrecy sum rate for multiuser MIMO downlink systems using block diagonalization

Xuanxuan Wang, Rafael F. Schaefer, Lars Thiele, Thomas Haustein, Yongming Wang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

To date, the achievable ergodic secrecy sum rate has been studied for multiuser MIMO downlink systems with single-antenna receivers only. In this paper, we study multiuser MIMO downlink systems with multiple-antenna receivers and an external single-antenna eavesdropper to be kept ignorant of the transmitted messages. We adopt the block diagonalization technique at the transmitter to remove inter-user interference, and derive closed-form expressions of the achievable rate for the intended users and the information leakage rate for the eavesdropper. Furthermore, we analyze asymptotic characteristics of the ergodic secrecy sum rate for the system in the high and low SNR regime, and obtain a tight lower bound in the regime of large transmit and receive antennas. Finally, numerical results validate the accuracy of the theoretical analysis.

Original languageEnglish
Title of host publication2016 IEEE Conference on Communications and Network Security, CNS 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages636-640
Number of pages5
ISBN (Electronic)9781509030651
DOIs
StatePublished - 21 Feb 2017
Externally publishedYes
Event2016 IEEE Conference on Communications and Network Security, CNS 2016 - Philadelphia, United States
Duration: 17 Oct 201619 Oct 2016

Publication series

Name2016 IEEE Conference on Communications and Network Security, CNS 2016

Conference

Conference2016 IEEE Conference on Communications and Network Security, CNS 2016
Country/TerritoryUnited States
CityPhiladelphia
Period17/10/1619/10/16

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