sanxiang

dsb通信系统调制程序调制载波的波形和频谱分析(dsb demolution)

此代码将leach和deec协议进行比较，对毕设要坐这方面的同学很有帮助，大家有兴趣可以看看。(This code will leach and deec protocol comparison, the complete set up to take the students very helpful in this regard, we are interested can look at.)

说明：  产生LFM信号。生成一个线性调频脉冲 %*Bandwidth——带宽,-表示降调制 %*Pulsewidth——脉宽 %*Samplespeed——采样速率 %Frequncy——中心频率 %Repeatcircle——重复周期 %Delay——延时,-表示超前 %Pulse——行矢量(LFM signal generate. Generate a chirp pulse %*Bandwidth - bandwidth, - denotes down modulation %*Pulsewidth - pulse width %*Samplespeed - sampling rate %Frequncy - center frequency %Repeat cycle %Delay -- delay - indicates lead %Pulse -- line vector)

采用Simulink仿真工具，通过对二元对称信道的仿真，研究信道编码（如Turbo码等）对误码率的改善情况。(Simulink simulation tool used, through the binary symmetric channel simulation to study the channel coding (such as Turbo code, etc.) on the error rate to improve the situation.)

软件无线电中的信号抽取程序，包括抽取后的频谱分析(software radio signal extraction procedures, including spectral analysis after extraction)

利用浮点数编码的遗传算法优化非均匀天线阵的峰值旁瓣电平(This thesis presents how to design sparse arrays using genetic algorithm with the optimization goal of peak side lobe level and calculate the best positions of array elements.)

pso算法优化25杆桁架结构，得到更好的结果(The PSO algorithm optimizes the 25 bar truss structure and gets better results)

说明：  利用共轭梯度法，追赶法，龙格库塔法来求解问题的源程序，适用于计算方法初学者(The source program of using conjugate gradient method, pursuit method and Runge Kutta method to solve the problem is suitable for beginners of computational methods.)

二维MUSIC算法的Matlab程序（8阵元均匀圆阵，三维图；方位角、俯仰角）(2D MUSIC algorithm)

支持向量机分类源代码 可以做分类和回归预测用(SVM source code)