Results 151 to 160 of about 465 (189)

Ergodic Achievable Secrecy Rate of Multiple-Antenna Relay Systems With Cooperative Jamming

open access: yesIEEE Transactions on Wireless Communications, 2016
This paper investigates the ergodic achievable secrecy rate (EASR) of multiple-antenna amplify-and-forward relay systems, where one eavesdropper can wiretap the relay. To reveal the capability of the multiple-antenna relay in improving the secrecy performance, we derive new tight closed-form expressions of the EASR for three secure transmission schemes:
Rui Zhao   +2 more
exaly   +4 more sources

Ergodic Secrecy Sum Rate Analysis of a Two-Way Relay NOMA System

IEEE Systems Journal, 2021
In this letter, we investigate the ergodic secrecy sum rate of a two-way relay NOMA system. In particular, by considering decode-and-forward signal processing at the relay and selection combining at the eavesdropper, we derive a tight closed-form ergodic secrecy sum rate expression for the considered system.
Mahendra K Shukla, Ha H Nguyen
exaly   +2 more sources

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

open access: yes2016 IEEE Conference on Communications and Network Security (CNS), 2016
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.
Xuanxuan Wang   +4 more
openaire   +2 more sources

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