b_cas_card_briefing_document

毕业设计matlab程序 VBLAST的ZF,MMSE,QR,ZF_IC,MMSE+IC译码程序 (Matlab graduate design program VBLAST the ZF, MMSE, QR, ZF_IC, MMSE+ IC decoding procedures)

DPSK系统的调制解调仿真，包括原理以及源代码和仿真结果，十分完整，包含了DPSK的相干解调，非相干解调，有自己的许多心得，希望对初学者有帮助(Modulation and demodulation of DPSK system simulation, including schematics and source code and simulation results, very complete, contains DPSK coherent demodulation, non-coherent demodulation many experiences, hope helpful for beginners)

1、概述 2、Simulink入门 3、Simulink功能模块 4、创建Simulink模型 5、Simulink 仿真运行 6、Simulink中的S函数 7、自定义模块的模块化与封装(1 Overview 2, Simulink entry 3, Simulink function module 4, create Simulink model 5, Simulink simulation run 6, Simulink S-function in the 7, modular and custom module package)

34个省份的地图的代码以及相关的属性，并提供相应的地图图形及四分图 (it is a example of providing how to do lm tests)

利用蝶形算法，实现快速傅立叶变换及其逆变换(The use of butterfly algorithm, fast Fourier transform and its inverse transform)

逆变器具有灵活、高效的特点，是新能源并网的主要接口。当多个逆变器连接到电网的同一个公共连接点时，逆变器非理想的电源特性，使得逆变器之间、逆变器与电网之间存在的谐波交互作用可能引发谐振， 使系统出现过电压、 过电流现象影响电网的电能质量，甚至威胁系统的安全稳定运行(Inverter is flexible and efficient, and it is the main interface of new energy integration. When multiple inverters are connected to the same common connection point of the power grid, the inverter is not ideal. The harmonic interaction between the inverters, the inverter and the grid may cause resonance, which causes the overvoltage and overcurrent to affect the power quality of the power grid and even threatens the safety of the system. stable operation)

在高斯与一径瑞利衰落信道下对OFDM系统（QPSK调制）的功率普的仿真(in Gaussian with a Rayleigh fading channel right OFDM system (QPSK) Pu Power Simulation)

该代码利用matlab，根据各类边界条件的设定，实现了FDTD的算法。( This MATLAB M-file implements the finite-difference time-domain solution of Maxwell s curl equations over a three-dimensional Cartesian space lattice comprised of uniform cubic grid cells.)

Adding Noise and the Restoring

在程序中用一般的MUSIC方法估计了信号的频谱，从两图中可看出在信号各频率处，频谱的峰值较大，故能明显的与噪声相区别，可在一定程度上避免在信号幅度较小时信号被噪声淹没的情况。(MUSIC method general procedures used to estimate the spectrum of the signal, it can be seen from the two graphs in the signal at each frequency of the spectrum peak larger, and it could be significantly distinguished from noise in the signal can be avoided to some extent a lesser extent, the signal is noise submerged.)