TY - JOUR
T1 - Secure transmission to the strong user in non-orthogonal multiple access
AU - Feng, Youhong
AU - Yan, Shihao
AU - Yang, Zhen
PY - 2018/12
Y1 - 2018/12
N2 - With non-orthogonal multiple access (NOMA) in a passive eavesdropping scenario, we tackle the maximization of the secrecy rate for the strong user subject to a maximum allowable secrecy outage probability while guaranteeing a constraint on the transmission rate to the weak user. For the first time, the dependence between the eavesdropper's ability to conduct successive interference cancellation and her channel quality is considered. We determine the exact optimal power allocation and redundancy rate, based on which the cost of security in terms of the reduction in the strong user's secrecy rate is examined, and the benefits of NOMA for secure transmissions are revealed.
AB - With non-orthogonal multiple access (NOMA) in a passive eavesdropping scenario, we tackle the maximization of the secrecy rate for the strong user subject to a maximum allowable secrecy outage probability while guaranteeing a constraint on the transmission rate to the weak user. For the first time, the dependence between the eavesdropper's ability to conduct successive interference cancellation and her channel quality is considered. We determine the exact optimal power allocation and redundancy rate, based on which the cost of security in terms of the reduction in the strong user's secrecy rate is examined, and the benefits of NOMA for secure transmissions are revealed.
UR - http://www.scopus.com/inward/record.url?scp=85055177137&partnerID=8YFLogxK
U2 - 10.1109/LCOMM.2018.2877320
DO - 10.1109/LCOMM.2018.2877320
M3 - Article
SN - 1089-7798
VL - 22
SP - 2623
EP - 2626
JO - IEEE Communications Letters
JF - IEEE Communications Letters
IS - 12
ER -