3phASMSimulation

电子通信系统的建模与仿真 第10章 声学仿真 10.1 回声试验 10.2 多普勒效应 10.3 声学信号的滤波特性试验 10.4 交混回响 10.5 短时傅立叶变换(Electronic communications system modeling and simulation of Chapter 10 Simulation 10.1 acoustic echo test 10.2 Doppler Effect 10.3 acoustic signal filtering properties of the mixed response from the pilot pay 10.4 STFT 10.5)

256QAM的调制解调matlab源代码(256QAM modulation and demodulation matlab source code)

基于2阶消失矩的Coifman小波基函数的2维MRTD电磁散射正演模型，吸收边界为PML。(Based on 2 vanishing moments of the Coifman wavelet function of 2-D MRTD forward model of electromagnetic scattering, absorbing boundary for the PML.)

二极管钳位3电平换流器的参考例子，可以学习载波移相调制方式(NGP-3level inverter)

优秀论文及配套源码。电压暂降是动态电能质量问题中最受关注的热点之一。大量新型电力电子设备的广泛使用对电网电能质量的要求越来越高，而且电压暂降在电网中又具有一定的传播性。因此，无论从电网还是用户都迫切需要对电压暂降进行研究和治理。对电压暂降的检测是解决电压暂降的前提条件，故本论文主要对电压暂降的检测方法进行研究。 本文分析了国内外短时电能质量扰动检测的研究现状，并着重讨论了短路故障、感应电动机启动和变压器激磁三种电压暂降扰动情况下电压暂降的特性；在此基础上选择了基于S变换的短时电能质量扰动检测方法，从S变换的结果S模矩阵及S复矩阵中提取出所需数据并以此来对各种扰动情况下的电压暂降的幅值、相位跳变、持续时间和谐波含量进行分析。仿真结果表明，该方法很好地实现了对电压暂降各特征量的检测。 (The voltage sag is one of most hot topics in dynamic electric energy problems. Masses of new power and electron facilities have been put into use widely, requiring a high quality of electric network and power, chiefly the voltage sag. Moreover, the voltage sag can spread in the electric network. So people have every reason to research and control the voltage sag. However, before developing the voltage sag, people have to detect it. On account of the above, this essay will chiefly focus on the detect methods of the voltage sags. In this paper, the status of the short duration power quality disturbance based on the different method are researched firstly, and emphasizes the characteristic of the voltage sag under the situation of the three kinds of voltage sag disturbances like the short circuit fault, induction motor start-up and transformer excitation. On the basis of the above, the short duration power quality disturbance detection method based on S transform is chosen. The complex m)

LTE-A系统上行链路模块仿真————预编码的实现(LTE-A uplink module simulation---- pre-encoded)

Polynomial code in c++, contain differnet functions

LDPC码的性能，包括利用各种方法寻找好的节点次数分布、构造性能优异的非规则码、快速译码算法的研究、分析不同结构下DLPC码的码重分布，计算性能界和码率界，分析码结构中的周期与性能的关系 (LDPC encoding and decoding in the standard of DVB一52. )

LS信道估计算法仿真MATLAB,ls信道估计算法代码(LS channel estimation algorithm simulation MATLAB)

说明：  MATLAB提供了多种方式从磁盘读入文件或将数据输入到工作空间，即读取数据，又叫导入数据；将工作空间的变量存储到磁盘文件中称为存写数据，又叫导出数据。(MATLAB provides a variety of ways from the disk is read into a document or data entered into the work space, that is, read data, also known as import data will work variable storage space to keep the disk file is called to write data, also known as export data .)