TY - GEN
T1 - Ergodic secrecy sum rate for multiuser MIMO downlink systems using block diagonalization
AU - Wang, Xuanxuan
AU - Schaefer, Rafael F.
AU - Thiele, Lars
AU - Haustein, Thomas
AU - Wang, Yongming
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2017/2/21
Y1 - 2017/2/21
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85016055551&partnerID=8YFLogxK
U2 - 10.1109/CNS.2016.7860563
DO - 10.1109/CNS.2016.7860563
M3 - Conference contribution
AN - SCOPUS:85016055551
T3 - 2016 IEEE Conference on Communications and Network Security, CNS 2016
SP - 636
EP - 640
BT - 2016 IEEE Conference on Communications and Network Security, CNS 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2016 IEEE Conference on Communications and Network Security, CNS 2016
Y2 - 17 October 2016 through 19 October 2016
ER -