TY - JOUR
T1 - Secrecy Outage of Max-Min TAS Scheme in MIMO-NOMA Systems
AU - Lei, Hongjiang
AU - Zhang, Jianming
AU - Park, Ki Hong
AU - Xu, Peng
AU - Zhang, Zufan
AU - Pan, Gaofeng
AU - Alouini, Mohamed Slim
N1 - Publisher Copyright:
© 1967-2012 IEEE.
PY - 2018/8
Y1 - 2018/8
N2 - This paper considers a secure nonorthogonal multiple access system, where confidential messages are transmitted from a base station to multiple legitimate destinations and wiretapped by multiple illegitimate receivers. It is assumed that all the channels experience a Nakagami-m fading model and all the nodes are equipped with multiple antennas, respectively. Both noncolluding and colluding eavesdroppers are considered, respectively. A max-min (MM) transmit antenna selection (TAS) strategy is adopted to improve the secrecy performance of the target system, in which both users in user paring are considered simultaneously. In particular, closed-form expressions for the cumulative distribution function of the signal-to-interference-noise ratio at the legitimate user are derived first. Then, we obtain the exact and asymptotic analytical results in a closed form for the secrecy outage probability of an MM TAS scheme. Monte Carlo simulation results are presented to corroborate the correctness of the analysis. The results show that the secrecy diversity order is zero and nonzero for fixed and dynamic power allocations, respectively.
AB - This paper considers a secure nonorthogonal multiple access system, where confidential messages are transmitted from a base station to multiple legitimate destinations and wiretapped by multiple illegitimate receivers. It is assumed that all the channels experience a Nakagami-m fading model and all the nodes are equipped with multiple antennas, respectively. Both noncolluding and colluding eavesdroppers are considered, respectively. A max-min (MM) transmit antenna selection (TAS) strategy is adopted to improve the secrecy performance of the target system, in which both users in user paring are considered simultaneously. In particular, closed-form expressions for the cumulative distribution function of the signal-to-interference-noise ratio at the legitimate user are derived first. Then, we obtain the exact and asymptotic analytical results in a closed form for the secrecy outage probability of an MM TAS scheme. Monte Carlo simulation results are presented to corroborate the correctness of the analysis. The results show that the secrecy diversity order is zero and nonzero for fixed and dynamic power allocations, respectively.
KW - Non-orthogonal multiple access
KW - multiple-input multiple-output
KW - secrecy outage probability
KW - transmit antenna selection
UR - http://www.scopus.com/inward/record.url?scp=85045201000&partnerID=8YFLogxK
U2 - 10.1109/TVT.2018.2824310
DO - 10.1109/TVT.2018.2824310
M3 - Article
AN - SCOPUS:85045201000
SN - 0018-9545
VL - 67
SP - 6981
EP - 6990
JO - IEEE Transactions on Vehicular Technology
JF - IEEE Transactions on Vehicular Technology
IS - 8
M1 - 8333750
ER -