ID 原文 译文
46396 在经典椭圆模型（EBSBM, ellipse based single bounce model）基础上引入等效散射点概念，提出了改进的多跳散射信道模型。 To overcome this problem, a modified multi-bounced channel model based on EBSBM was provided, in which the concept of equivalent scattering point is assumed.
46397 此模型将多跳散射路径通过几何变换等效为单点椭圆散射路径， The multi-bounced propagation paths are considered as an one-bounced ellipse scattering path and characteristics of the model were further analyzed.
46398 研究了模型的空时频统计特性，推导出发射角（AOD, angle of departure）、到达角（AOA, angle of arrival）及多普勒频移（Doppler shift）等随机参数的概率密度函数（PDF, probability density function）的解析表达式，并进一步分析天线圆形阵列（uniform circular array）分布下的 MIMO 信道空间相关性及信道容量。 General formulations of several important parameters such as the probability density function(PDF) of the angle-of-departure(AOD), angle-of-arrival (AOA) and Doppler shift were derived, which were applied to the performance of multiple-input-multiple-output（MIMO）system employing a circular array antenna. Doppler frequency distribution was also taken into account.
46399 仿真实验与以往模型及数据对比验证了所提出模型的有效性。 The results show good agreement with the previously models, which validate the rationality of proposed model.
46400 基于 2.55 GHz 城市微蜂窝场景多输入多输出(MIMO, multiple-input multiple-output)信道实测数据，研究了三维宽带无线信道的时变特性， Based on the outdoor microcell MIMO channel measurement campaign at 2.55 GHz, the time-evolution characteristics of three-dimensional wideband channel were studied.
46401 利用 SAGE (space-alternating generalized expectation-maximization)算法提取多径参数，包括水平、垂直面的电波离开角和电波到达角， The SAGE algorithm was used to extract multipath parameters such as azimuth and elevation angle of departure and arrival.
46402 采用双向匹配算法识别并跟踪多径，建立了多径的“生灭”模型， A bidirectional matching algorithm was applied to tracing multipath and the birth-death process.
46403 统计分析了多径的出现率、多径生命周期、多径初始参数和演进参数等时变信道模型参数并根据上述参数的统计分布和相关性展开建模， The statistical characteristics of multipath birth, lifespan, multipath initial and evolution parameters were analyzed and modeled based on the cross-correlations of multipath parameters.
46404 建立了基于多径“生灭”过程的时变信道模型， A time-varying channel model with multipath birth-death process was developed.
46405 并给出了详细的模型参数和仿真实现步骤，通过对比实测数据和仿真结果的均方根时延扩展和均方根角度扩展，验证了模型的可用性。 The model parameter table and a detailed flowchart were offered for time-varying channel simulations.