signal_LFM

this program is about the BER of ofdm_4QAM. I hope it will do a little help for somebody .

利用周期图法对序列的功率谱进行估计。数据窗采用汉明窗。假设在白噪声中分辨这三个不同频率的正弦信号,其相位是均匀分布在2PI的独立随机变量,而 是一个单位白噪声.生成50个长度为N=512的 的样本序列集合。 (use map cycle sequencing method of the power spectrum estimation. Data window using Hamming window. Assume that the white noise to differentiate between the three different frequency sinusoidal signal, its phase is uniformly distributed in the PI two independent random variables. but a flat white noise. Generating 50 length N = 512 samples of the sequence set.)

求一维序列x(n)的离散Fourier谱分析，s(0:m)离散功率谱，c(0:m)振幅谱，cta(0:m)位相谱，其中m=[n/2.]。(Discrete Fourier spectrum of one-dimensional series)

The code that will make your windows support automatic repositioning of their child controls

经典的matlab编程代码,这是一部经典的matlab教材，对最优化问题阐述的比较精辟。(the code of matlab，-This is an optimization on the books, is English. This is a classic foreign materials, for optimization problems on the very brilliant)

matlab里面有用的一个时频工具箱，可以做wvd等(matlab inside a useful time-frequency toolbox, you can make such wvd)

Direct Sequence Spread Spectrum

TSP问题；蚁群算法；关键参数设置；MATLAB(MATLAB，tsp)

某型飞机机翼在风洞中测得的翼型自噪声数据，可用于多输入单输出的神经网络建模。(A certain type of aircraft wings in the wind tunnel measured airfoil self-noise data, can be used for multi-input single-output neural network modeling.)

Beyond software architecture