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matlab 模拟ldpc系统，包括BER和SNR，BER和迭代次数的关系(matlab simulation ldpc system, including the BER and SNR, BER and the relationship of the number of iterations)

Matlab工程数学解题指导 _ 蒲俊,吉家锋编著_ - 上海_ 浦东电子出版社, _0(Matlab mathematical problem solving guide _ CAF. Kyrgyzstan Andrew edited _ front-Shanghai Pudong _ Electronic Press, Huffman)

ED problem Increase monthly production and sales by 20 by second quarter of this year

简单的求逆矩阵中单个元素的程序。 用于求解逆矩阵中的单个元素值，基于定义 使用伴随阵/行列式的值求解 只适用于小矩阵。维数太大行列式的值就计算不出来了(Simple inverse matrix of individual elements in the program. For solving the inverse matrix single element values, with the value of the array/determinant of solving only apply to a small matrix-based definition. Value dimension to calculate the determinant is not too out)

MATLAB SIMULINK通信系统建模与仿真实例分析学习辅导和习题详解(MATLAB SIMULINK communications system modeling and simulation analysis study examples and exercises Detailed Guidance)

逆变器 背靠背变换器的 PI控制 电气模型(CONVERTER BACK TO BACK)

说明：  uwb各种程序，可以产生信号、冲激响应等等各类仿真任务完美完成(UWB programs can generate signals, impulse response and other simulation tasks to complete perfectly)

经典的汉密尔顿回路算法，以Matlab代码编写。(Hamilton classic loop algorithm to Matlab coding.)

本组设计的声音导引系统使用双MCU结构，采用基于时间差的声源定位算法（利用三路接收器的时差信号）结合PID算法判断并控制移动声源的速度。本设计的特色在于使用四阶Butterworth带通滤波器对声音信号进行处理，使其具有较强抗干扰能力。且系统设计性价比高，功耗低。(Our group design the Sound Guidance System based on Bi-MCU configuration, using time difference sound source orientation arithmetic（the time difference signal from three receivers）combining PID arithmetic to determine and control the mobile sound source’s velocity. The feature of the designation is processing the sound signal by four-order Butterworth band-pass filter. This enhances the anti-jamming ability. Furthermore, the system has the high performance and low price.)

平面波在介质中的传播，边界条件位pml。平面波在介质中的传播，边界条件位upml(Plane wave propagation in the medium, the boundary condition bit pml)