ID 原文 译文
20145 为了掌握协作MIMO技术在高铁场景中的信道特性，该文基于几何随机散射理论，提出一个高速铁路协作MIMO信道模型，简单调整该模型中的几个关键参数即可适用于高速铁路的多种场景。 To master the channel characteristics of cooperative MIMO technology in high-speed railway scenarios, based on the geometric stochastic scattering theories, a new channel model for cooperative MIMO channel in high-speed railway scenarios is proposed, which can be applied to multiple high-speed railway scenarios by simply adjusting its several key parameters.
20146 基于该模型计算信道冲激响应，推导多链路空间相关函数，进行数值计算、仿真分析和实测数据验证。 Based on this model, the channel impulse response is calculated, the multi-link spatial correlation function is derived, the numerical calculation, simulation analysis and verification of measured data are carried out.
20147 仿真结果显示，直射分量越强，散射分量的角度扩展越小，多链路的空间相关性越强。 Simulation results show that the multi-link spatial correlation is stronger when the LOS component is stronger and the angle spread of scattered components is smaller.
20148 散射次数越少，散射分量空间相关性越强。 The components which are scattered less times have a strongerspatial correlation.
20149 使用北京-天津高铁段LTE专网的实测数据验证理论模型的正确性。 The theoretical model is verified by the measured data of the LTE special network of theBeijing-Tianjin high-speed railway section.
20150 这些结论有助于认知协作MIMO信道和进行有效的测量活动。 These conclusions contribute to understanding the cooperativeMIMO channels and conducting effective measurement activities.
20151 获得随机阵列的高效、统计无偏波达方向(DoA)估计是超分辨率DoA估计领域的一大挑战。 As for super resolution Direction-of-Arrival (DoA) estimation with random arrays, it is still challenged to obtain efficient and statistically unbiased estimates.
20152 该文基于“利用旋转不变技术扩展估计信号参数法(AESPRIT)” 提出了一种随机阵列DoA估计算法。 Based on Augmented Estimation of Signal Parameters via Rotational Invariance Techniques (AESPRIT), an efficient DoA estimation algorithm is proposed for random arrays.
20153 该算法将AESPRIT改造成闭合环结构，并使用阵列内插技术(AIT)提供的角度粗估计作为初始相位补偿角，从而通过迭代快速获得精确的DoA估计。 AESPRIT is modified with a closed loop structure; Array Interpolation Technique(AIT) is utilized to provide the initial phase compensation angles to the loop. Therefore, the final DoAestimates can be calculated efficiently and accurately through iteration.
20154 所提算法直接给出代数形式的估计结果，具有低的计算复杂度； The proposed algorithm gives algebraic solution directly and has low computational complexity.