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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。并请描述：自己用计算机产生的经典谱是正确的依据。(2. Regarding the doppler spectrum of the wireless channel, please answer the following questions:
(1) in some wireless channels, doppler frequency shift will cause aliasing of the output signals of the wireless channel.Describe the various causes of aliasing;
(2) there is a classic spectrum in the doppler spectrum in the wireless channel, please explain the mechanism of producing this spectrum shape;
(3) please use Simulink tool to write code (s-function mode) to generate a single-path Rayleigh channel, whose doppler spectrum is the classical spectrum, in which the moving rate is 120km/h.And please describe: your own computer generated classical spectrum is the correct basis.)
- 2019-01-15 10:49:35下载
- 积分：1
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KP_factor
该函数主要通过两个矩阵的克罗内克积来对两个因子矩阵进行估计。输入变量为克罗内积，输出为指定维度值得两个因子矩阵。(This function is used to estimate the two factor of a matrix which is the Kronecker product of the aforementioned factor matrix.)
- 2017-11-24 17:03:44下载
- 积分：1
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PSK4
Matlab产生M-psk信号,用SVM实现对M-psk星座图的非线性决策边界,使用训练后的模型对测试数据进行预测(Realization of nonlinear decision boundary for M-psk constellation using SVM)
- 2018-06-10 23:55:01下载
- 积分：1
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ls mmse lmmse
ofdm信道估计仿真（ls算法，mmse算法，还有一种改进的mmse算法lmmse，可以直接在马特拉并上运行）(OFDM channel estimation simulation (ls algorithm, mmse algorithm, as well as an improved MMSE algorithm lmmse, can be directly in the Matra and run))
- 2020-07-10 14:19:04下载
- 积分：1
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EXCEL2DBC
说明： Excel生成DBC文件，便于通讯管理，DBC文件为CAN通讯通用的标准格式文件(database can DBC generates can communication)
- 2020-06-26 09:41:11下载
- 积分：1
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llr_Bp2
matlab写的ldpc编译码仿真，自己可以该参数看误码率，(matlab ldpc encode decode)
- 2018-03-27 11:38:36下载
- 积分：1
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wanguanjiplc
弯管机PLC程序，可以参考学习，结合自己使用的实际情况改设置就可使用。(The bending machine PLC program, you can refer to learning, combined with the actual situation of their use changed settings can be used.)
- 2021-01-20 14:58:41下载
- 积分：1
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TSP问题——遗传算法matlab实现
说明： 行商问题，自动生成最短路径。该算法可以生成经过拓扑每一点一次且仅一次最后回到起点的最短路径。(TSP problem: how to generate the minimal path for a salesman traveling among a set of points.)
- 2019-11-03 16:37:24下载
- 积分：1
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C-language-programming-book-
是c语言的编程指导手册，分为基础篇和函数篇，使编程人员能快速查找函数等的使用方法。(This is the C language programming guide, divided into basic function and using method, so programmers can quickly find the function. The C language is a programming guide, divided into basic function and using method, so programmers can quickly find the function and so on. )
- 2017-05-02 14:37:32下载
- 积分：1
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BCHcodeECC
介绍bch的基础知识，包括纠删码的编码和解码(Introduce the basic knowledge of bch, including the encoding and decoding of erasure codes)
- 2018-12-18 15:26:35下载
- 积分：1
