exercise1

This is a model of a QPSK modulation system for transmission over a bandpass channel with fc = 100 Hz and B = 30 Hz and AWGN at the receiver. SRRC fi lters with excess bandwidth α = 0.18 are employed. The receiver includes an NDA timing recovery loop followed by a DD phase recovery loop. The transmitter?s symbol period is T and set to a value of 100 ms. The symbol period at the receiver is Tr. The model will produce six windows: Two constellation plots and two eye diagrams (for the real part only), at the output of the matched fi lters and after the recovery loops a plot of the phase error (output of the NCO) and a plot of the fractional timing error (used in the interpolator). The frequency off set at the receiver is denoted by deltaf. The model simulates the transmission of 8000 QPSK symbols.

一个简单的计算电磁波多普勒频率的matlab函数，自己用的，随手编写了。(A simple matlab function for compute doppler frequency，very simple.)

基于非列排序经济调度问题，比其它算法更好，收敛更好(Based on the column sorting economic scheduling problem, than other algorithms, convergence is better)

最优化技术方法及MATLAB的实现，HookeJeeve.m(HookeJeeve.m)

在立体空间中绘制八面体的Matlab源程序，并对该八面体进行分类(Draw octahedral Matlab source in three-dimensional space and classify the octahedral)

This contains the genetic algorithm permutation and radial basis function

说明：  hht希尔伯特黄变换，自己使用，经过验证之后，能出结果的(HHT Hilbert Huang transform, their own use, after verification, the results can be)

Telecommunication Lecture - .

说明：  基于mfcc的端点检测的matlab实现(Mfcc based endpoint detection matlab implementation)

说明：  行向量绘图，在matlab中对于含有大量的数据，单独在一张静态的图上是显示效果是很不理想的，这个程序实现了在matlab中以示波器的形式动态的显示器波形图(Row vector graphics in matlab in containing a large amount of data, alone in a static chart is to show the effect is not ideal, the realization of this procedure in matlab in the form of oscilloscope waveform display dynamic)