multimedia_materials

一、 本程序采用16QAM调制方式，对一串2进制信源进行调制，采用（7，4）循环码对信源做信道编码，用升余弦滚降函数进行基带调制，再调到高频信道；在信道上加入高斯白噪声，运用匹配滤波器解调，画出解调星座图，运用最小欧氏距离译码判决，再对信号进行信道解码，画出采用信道编码技术和不采用信道编码技术的误比特率图。(First, this program uses 16QAM modulation mode, for a string of two binary source is modulated, using (7,4) cyclic code of the source-channel coding to do with a raised cosine roll-off function for base-band modulation, and then transferred to a high frequency channel in the channel by adding Gaussian white noise, the use of matched filter demodulation, demodulation constellation plot, using the minimum Euclidean distance decoding decision, and then right channel signals, decoding, channel coding techniques used to draw and non- channel coding techniques using bit error rate plans.)

说明：  通过Monte Carlo仿真，说明DS扩频信号在抑制正弦干扰方面的有效性。用一均匀随机数发生器产生某个二进制信息符号的序列，每个信息比特重复Lc次。 包含文件：DS_restrain_interference.M SS.M(through Monte Carlo simulation, note DS spread spectrum signal sinusoidal interference in inhibiting the effectiveness. Using a uniform random number generator produce a binary sequence information symbols, each bit of information to repeat Lc times. Documents include : DS_restrain_interference.M SS.M)

MPLAB_C18_C_编译器入门 MPLAB_C18_C_编译器入门(MPLAB_C18_C_ MPLAB_C18_C_ Compiler Compiler Getting Started Getting Started)

This function calculates discrate fourier transform for vector using the "Fast" method . (recursion )

remote sensing 12123132

Wave drag estimation for wings according to Korn method

结构拓扑优化--------------------------------------------(Topology optimization--------------------------------------------)

桁架结构动力分析，包括坐标转换矩阵、单元质量矩阵等(Truss structure,Including coordinate transformation matrix unit mass matrix, etc.)

主要是matlab的画图，画的很好。很不错！应该可以看懂的。(The drawing is mainly matlab)

Simulation program to realize OFDM transmission system