V9_2017_3_17

LTE ADVANCED ,LTE PHY Downlink with Spatial Multiplexing

ABS滑移率计算模型，自己编的，希望对大家有用(failed to translate)

基于LabVIEW8.5的最小二乘法曲线拟合研究(Based on the least-squares curve fitting LabVIEW8.5 Research)

We have proposed a novel pilot decontamination scheme which combines the two existing schemes: SPRS and WGC-PD scheme.

说明：  可实现，线性调频信号的产生，波形显示，波形解调和码字解调功能(Realizable, chirp signal generation, waveform display, waveform demodulation and codeword demodulation)

用MATLAB在对微分方程求数值解的软件包的基础上 编写了一个脉冲微分方程求数值解并绘制轨线图，分叉图和时间序列图的程序(Based on the software package of solving differential equations by using MATLAB, a program is written to solve impulsive differential equations and draw trajectory, bifurcation and time series diagrams.)

说明：  一种简单的GPS的C/A码及导航电文建模(GPS C / a code and navigation message modeling)

说明：  2. 关于无线信道的多普勒谱，请回答以下问题： (1) 在某些无线信道中，多普勒频移会引起无线信道输出信号的混叠。请描述产生混叠的各种原因； (2) 无线信道中的多普勒谱有一种经典谱(classic spectrum)，请解释产生这种谱形状的机理； (3) 请用Simulink工具编写代码(S-Function方式)，产生一单径瑞利信道，其多普勒谱为经典谱，其中移动速率为120km/h。并请回答：证明自己用计算机产生的经典谱是正确的可能方法。 (On the wireless channel of the Doppler spectrum, please answer the following questions: (1) In some radio channels, the Doppler frequency shift will cause the output signal of the wireless channel aliasing. Please describe the aliasing produced a variety of reasons (2) wireless channel in the Doppler spectrum has a classical spectrum (classic spectrum), please explain the mechanism of produce such spectral shape (3), please use the Simulink tool to write code ( S-Function mode), resulting in a single-path Rayleigh channel, the Doppler spectrum for the classical spectrum, including mobile rate of 120km/h. And requested the answer: that they used computer-generated classical spectrum is the right possible way.)

说明：  1kw左右永磁直驱风机并网模型；带有低电压穿越；穿越方式是电阻耗能型，控制直流母线电压下降。(The grid-connected model of permanent magnet direct drive fan around 1kw; with low voltage crossing; the crossing mode is resistance energy dissipation type, which controls the DC bus voltage drop.)

说明：  DFE信道均衡算法及学习曲线绘制程序。程序为matlab代码。(DFE channel equalization algorithm and the learning curve drawing program. Procedures for the matlab code.)