ID 原文 译文
22045 最后通过解模糊算法获得方位角和俯仰角高精度无模糊 DOA估计。 Finally, high accuracy and unambiguous angles of azimuth and elevation are obtained through the solution of fuzzy algorithm.
22046 该算法较好地解决了子阵单元内 DOA 估计和子阵单元间 DOA 估计之间的配对问题以及俯仰角和方位角之间配对问题，充分利用分布式阵列扩展阵列物理孔径特性； The matching problem of the DOA estimation about different baselines and the pairing problem between azimuth and elevation are well solved by the proposed algorithm, therefore the characteristic of large aperture is acquired using the distributed array.
22047 同时该算法可直接对相干信号和非相干信号进行处理。计算机仿真结果验证了所提算法的有效性。 At the same time, this algorithm can deal with the correlation signals and uncorrelation signals. Computer simulation results confirm the effectiveness of the proposed algorithm.
22048 多层建筑室内无线网络安全问题的特殊性，主要由其具有随机性、动态性和复杂性的空间拓扑结构所引起的。 The particularity of security threats for Multi-floor building Indoor Wireless Networks (MIWNs) is mainly caused by its stochastic, dynamic and complex spatial topology.
22049 针对多层室内无线网络节点分布随机、空间结构复杂、损耗类型多样等特点，该文结合物理层安全与随机几何理论，对多层室内无线网络中的多节点协作安全传输展开研究。 According to the features of MIWNs, such as the randomization of node distribution, complexity of spatial structure, and diversification of loss types, physical layer security technologies and stochastic geometry theory are utilized to study the cooperative secrecy transmission in MIWNs.
22050 首先，基于多层泊松点过程对 K 层室内无线网络进行建模； First, a fundamental system model for MIWNs is proposed based on multi-floor Poisson point process.
22051 在此基础上，将协作传输引入多层室内无线网络，并提出该网络的安全概率分析框架； On this basis, cooperative transmission is introduced into MIWNs and an analysis framework to evaluate the secrecy probability for cooperative transmissions in MIWNs is proposed.
22052 随后，结合理论推导及仿真，分析了楼层总数、安全速率门限、用户所处楼层和各层发射功率配置等因素对多层室内无线网络安全性能的影响。 Then, based on the theoretical analyses and simulation results, the influences of total floor number, secrecy rate threshold, floor number for target user, and the transmit power allocation on secrecy performance in MIWNs are examined.
22053 最后，通过仿真验证了协作传输能够有效提高室内无线网络的安全性能。 Finally, the simulations verify that the cooperative transmission can effectively improve the secrecy performance of the MIWNs.
22054 大规模 MIMO 系统采用空分多址可以提高系统吞吐量，同时利用多用户下行信号的相互协作可以对窃听者造成叠加干扰，带来了天然的安全增益。 Massive MIMO system using Space Division Multiple Access (SDMA) can improve system throughput, and the use of multi-user downlink signal collaboration can cause superimposed interference to the eavesdropper, bringing a natural security gain.