ID 原文 译文
54867 首先,针对模型包含大量不确定参数,使用了最坏情况增益(worst case gain,WCG)的灵敏度分析方法对系统不确定性进行分析,得到了可以表示原系统模型不确定性的主要不确定参数。 First, in view of the model contains a large number of uncertain parameters, using the worst case gain (worst case gain, WCG) sensitivity analysis method to analyze the system uncertainty, obtained can represent the main uncertain parameters of the original system model uncertainty.
54868 然后,根据不确定参数分析结果,选取H∞混合灵敏度控制器的权函数并设计了控制器。 Then, according to the results of the analysis of uncertain parameters selection h-infinity mixed sensitivity controller of weight function and design of the controller.
54869 最后,通过三通道非线性仿真以及参数拉偏仿真,对控制系统的动态性能和鲁棒性进行了检验,验证了控制系统分析与设计方法的有效性。 Finally, through the three-channel nonlinear simulation and parameter partial simulation, dynamic performance and robustness of control system, the inspection to verify the effectiveness of the control system analysis and design method.
54870 随着射频功率放大器的发射功率不断提升,特别是Doherty功放的广泛应用,使得功放的非线性特性不断增强。 With ever increasing the transmission power of rf power amplifier, especially the widely used Doherty amplifier, makes the nonlinear characteristic of power amplifier has been increasing.
54871 为了满足高线性化的需求,数字预失真(digital pre-distortion,DPD)技术要求达到更优的非线性校正效果。 In order to meet the requirements of high linearization, the digital predistortion (digital pre - distortion, DPD) technical requirements to achieve better effect of nonlinear correction.
54872 提出一种基于线性插值基的数字预失真方法,所提方法将线性插值基引入到数字预失真的行为建模中,达到优化的非线性校正效果。 In this paper, a digital predistortion method based on linear interpolation basis, the proposed method will be introduced to the linear interpolation based digital predistortion behavior modeling, to optimize the nonlinear correction effect.
54873 同时所提方法通过与查找表的实现方式结合,非常利于系统应用。 At the same time, the proposed method through combination with the implementation of a lookup table, is very benefit for application system.
54874 仿真实验中采用20MHz长期演进(long term evolution,LTE)信号进行实验,新方法较广义记忆多项式方法在临道泄露比指标上改善了近7dBc以上。 Simulation experiments using 20 MHZ in the long-term evolution (long term evolution, LTE) signal testing, the new method is a generalized memory polynomial method in near the leak than on indicators improved nearly more than 7 DBC.
54875 认知跳频被认为是消除传统跳频系统用频困扰的有效途径之一。 Cognitive frequency hopping is considered to eliminate the traditional frequency hopping system with frequency of one of the effective ways.
54876 针对认知跳频超宽带和多频隙实时频谱感知的需求,给出基于归一化谱双向搜索(bidirectional search of normalized power-spectrum,BSNP)的感知算法,BSNP以跳频频隙内的归一化功率谱作为检验统计量,通过顺序执行正向和反向搜索,感知出跳频带宽中已被占用的所有频隙。 For cognitive frequency hopping ultra broadband and multiple frequency gap the demand of real-time spectrum perception, is given based on the normalized spectral bidirectional search (bidirectional search of normalized power spectrum, BSNP) perception algorithm, BSNP frequently gap to jump the normalized power spectrum as test statistics, by sequential forward and reverse search, sense out of the dance band width has been occupied all the frequency in the gap.