ID |
原文 |
译文 |
54387 |
更值得考虑的是,由于节点的自私性,用户间的协作公平性也是一大挑战。 |
What is more it's worth considering, the user fairness is also a big challenge because of the selfishness of nodes. |
54388 |
由此,本文设计了一种新型的两阶段用户协作方案。 |
Thus, this paper designs a new cooperative NOMA scheme. |
54389 |
第一阶段,NOMA网络中远端用户采用全双工(full-duplex,FD)干扰智能窃听者。 |
In the first stage, the edge users employ the full-duplex jamming(FD) to send jamming signals to intelligent eavesdropper. |
54390 |
目前,全双工技术一般用于提高频谱资源利用率以及用户数据吞吐量方面, |
The technology of the full duplex are commonly used to improve spectrum utilization and user data throughput. |
54391 |
本方案设计将全双工结合预编码矩阵用于干扰窃听,可在不干扰合法用户下有效降低窃听者质量。 |
Full duplex combined with precoding matrix is used to interfere with the eavesdropper, which reduce the quality of eavesdropper without interfering with legitimate users effectively. |
54392 |
第二阶段,近端用户可作为一个中继协助源节点转发远用户信号信息,并在接收端采用串行干扰消除(Successive Interference Cancellation,SIC)技术进行解码。 |
In the second stage, close users can act as relays to assist edge users forwarding signals. The successive interference cancellation technique is used to decode signals in the receiving terminal. |
54393 |
考虑到系统中不同用户的信息接收速率与通信需求不同之间的相关性,分别推导了遍历安全容量和遍历容量的解析表达式, |
Considering the correlation between different users of information receiving rates and communication demands in the system, the closed-form expressions of ergodic achievable secrecy rate(EASR)and ergodic capacity are derived respectively. |
54394 |
同时分析了功率分配因子和用户间协作发射功率等因素对性能的影响。 |
Meanwhile, the influence of power allocation factor and the transmission power between users on performance are analyzed. |
54395 |
结果表明所提方案比现有方案,近端用户性能提升约21.4%,远端用户性能提升约6.5%,且信息接收更为平稳, |
The results show that the performance of the proposed scheme is improved by about 21. 4% for the near users and 6. 5% for the edge of the user, and the information reception is more smooth than the existing scheme. |
54396 |
并通过Monte-Carlo仿真验证了其正确性。 |
The correctness of the proposed scheme is verified by Monte-Carlo simulation. |