Secure Transmission to the Strong User with Optimal Power Allocation in NOMA
Secure Transmission to the Strong User with Optimal Power Allocation in NOMA
复制标题
DOI：
--
复制
发表时间：
2018-07
期刊：
影响因子：
--
通讯作者：
Youhong Feng;Shihao Yan;Zhen Yang
中科院分区：
文献类型：
--
作者：
Youhong Feng;Shihao Yan;Zhen Yang
利用非正交多址（NOMA），我们在最大允许保密中断概率下解决了强用户保密率的最大化问题，同时保证了对弱用户的传输速率的约束。首次考虑了窃听者进行连续干扰消除的能力与其信道质量之间的依赖关系。我们确定了最优的功率分配和冗余率，在此基础上研究了降低强用户保密率的安全成本，并明确揭示了NOMA对安全传输的好处。
With non-orthogonal multiple access(NOMA), 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 optimal power allocation and the 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 explicitly revealed.