2-daolibai

chapter 3 with figures for practical

OFDM很容易在具有时延扩展或等效频率选择性的信道上使用。 频率选择性信道的特征在于延迟扩展或相干带宽，其测量频率中的信道去相关。 相干带宽与均方根（RMS）时延扩展成反比。 通过选择与信道相干带宽相关的子载波间隔，OFDM可以用于将频率选择性信道转换成频率平坦子信道的并行集合。 适合于平坦衰落信道的技术可以直接应用。(OFDM is simple to use on channels that exhibit time delay spread or, equivalently, frequency selectivity. Frequency selective channels are characterized by either delay spread or coherence bandwidth which measures the channel decorrelation in frequency. The coherence bandwidth is inversely proportional to the root-mean-square (rms) delay spread. By choosing the sub-carrier spacing properly in relation to the channel coherence bandwidth, OFDM can be used to convert a frequency selective channel into a parallel collection of frequency flat subchannels. Techniques that are appropriate for flat fading channels can then be applied in a straight forward fashion.)

短时傅立叶变换测频，可对复信号处理。界面设计好，用户交互方式编程。(STFT frequency measurement can be complex signal processing. Interface design, the user interactively programming.)

8位相移键控误码率分析的MATLAB程序(8 phase shift keying bit error rate analysis of the MATLAB program)

Matlab中几个经典的编程例子，很适合初学者(Matlab, the programming of several classic examples, it is suitable for beginners)

guassian band reject filter

31个城市的TSP问题，用蚁群算法编写的程序(TSP problem for 31 cities ,ACO program)

matlab程序大全：工时统计，足球游戏、楼梯智力游戏等(The matlab program Guinness: working hours statistics, football games, stairs puzzles)

Draft version of lung extraction

高斯白噪声产生程序文件，直接可用有注释 对于初学者有帮助(Gaussian white noise generated files, can be annotated directly helpful for beginners)