ID 原文 译文
12814 形式化多维散射模型和低维映射研究方法为分析复杂目标的雷达散射特性提供了参考。 The multi-dimensonal scatterng model and ts lower d mensonal representaton can be mplemented n analyzng the scatterng s gnature of complex radar targets.
12815 为了准确反映复杂城区环境下移动自组织网络(moblle ad hoc network, MANET)通信节点间的无线信道传播特性,以150 MHz频点为例对山东省青岛市典型城区场景的超短波无线信道进行了外场 测量。 In order to emprcally characterze the wreless channel propagaton for the moble ad hoc network (MANET) communications in urban environment, extensive wddeband channel measurements are performed at 150 MHz on behalf of the very high frequency (VHF) band in Qingdao urban areas.
12816 基于测量数据开展统计分析,提取了路径损耗指数、阴影衰落标准差、多径时延拓展以及频率相关性 等信道参数,并针对准视距(quas-light-of-sight, QLOS)区和非视距(nonlight-of-sight, NLOS)区建立了大尺度衰落模型和小尺度抽头延迟线模型。 Based on the measurement data and statistical analysis, the path loss exponent, shadow fadmg standard variations, multipath delay spreads, and frequency correlatons are extracted. Two statistical tapped delay line channel modes are estabished for quas-light-of-sight and nonline-of-sight regions.
12817 分析和建模结果表明：在MANET城市通信场景下,路径损耗指数随距离增加呈现出双斜率特性；当累积分布函数(cumulative distribution function, CDF)为0. 9时,均 方根时延在QLOS区为726 ns，在阻挡严重的NLOS区为967 ns&相关带宽在QLOS区和NLOS区分别为 700 kHz和300 kHz。 Numerica anaysis shows that in the MANET urban communication scenario, the path loss exponent exhibits a double slope characteristic as the distance increases； the root-mean-square(RMS) delay is 726 ns in the quasi—iine—of—sight region and 967ns n the severely blocked non-lne-of-sght regon when the cumulatve dstrbuton functon equals to 0. 9； the relevant bandwidths are 700 kHz and 300 kHz in the quas-light-of-sight and nonline-of-sight regions, respectively.
12818 论文所建信道模型有利于准确衡量MANET通信设备在复杂城区的通信性能,并为相关通信系统设计提供参考。 The channel models obtained in this paper can be applied to measure the performance of MANET communcation systems in urban areas, and give useful insights for the system design.
12819 为了在无线网络中进行高效的链路资源调度、减小网络干扰、提高网络容量，提出了一种利用回溯天线并考虑干扰环境的链路资源分布式智能调度算法。 In order to schedule iink resources in wireless network efficiently and reduce network interference and improve network capacity, a distributed intelligent scheduling algorthm of iink resources using directional communication is proposed.
12820 首先,结合通信的路径损耗模型设计卷积核,对节点密度矩阵进行卷积来衡量干扰链路强度，从而避免对所有干扰链路进行信道估计产生巨大的计算代价; First, the convolution kernel is designed by combining the path loss model of communication. The density matrix of nodes is convolved to measure the strength of interference links, thereby avoidng the huge computatonal cost of channel estimaton for all interference links.
12821 然后，结合强化学习的思想设计了与通信环境交互的链路调度学习模型,每个链路利用神经网络进行独立的训练,将训练所得的决策结果反馈到环境中进行状态更新,模型在不断更新的环境中迭代来学习最优的调度策略。 Then the iink scheduling learning mode l interacting with the communication environment is designed based on the idea of reinforcement learning. Each iink is trained independently by using neural network, and the decision results obtained from trainmg are fed back to the environment for status update. The model runs iteratvely in a constantly updated envronment to learn the optimal schedulng policy.
12822 该方法能分布式的运行，可有效衡量无线网络中的链路干扰强度，结合衡量结果进行高效的链路资源 分布式调度,从而最大化网络容量。 This method can measure the iink interference intensty effectvely in wireless network, and distribute the link resources a^ cording to the measured results, so as to maximize the network capacty.
12823 仿真结果验证了该调度算法无论是在算法迭代收敛还是网络容量性能上都能很好地逼近全局的调度算法，达到全局算法最优结果的92%〜100%。 Simulation results show that the distributed scheduing agorithm can approach the gBoba scheduing algorithms weB both in iterative con-vergence and network capacity performance! reaching 92% —100% of it.