OFDM

小波分析理论及MATLAB7实现的例程,第11章二维小波变换的MATLAB实现(Wavelet analysis theory and realize MATLAB7 the routines, Chapter 11 two-dimensional wavelet transform of MATLAB realize)

DTMF(双音多频)是用两个特定的单音频组合信号来代表数字信号的一种编码技术。两个单音的频率不同，代表的数字或实现的功能也不同。可采用8种频率代表电话机上的16个按键，10个数字键0~9和6个功能键*、#、A、B、C、D。具体的频率组合见参考书。要求： (1) 根据键盘输入的符号，利用MATLAB产生对应的DTMF信号；(2) 分别利用FFT算法和Goertzel算法计算该DTMF信号的频谱并画出频谱图；(3) 根据频谱图确定DTMF信号所代表的符号是否和输入的符号一致。 (DTMF (Dual Tone Multi-Frequency) is a single with two specific combination of audio signals to represent a kind of digital signal coding techniques. Two monosyllabic different frequency, on behalf of the numbers, or the realization of the functions are also different. Eight kinds of frequency of use on behalf of telephone on the 16 keys, 10 numeric keys 0 ~ 9 and 6 function keys*,#, A, B, C, D. The frequency of specific composition of reference books. Requirements: (1) According to the keyboard input of symbols, the use of MATLAB have a corresponding DTMF signal (2), respectively, using FFT algorithm and the Goertzel algorithm DTMF signal spectrum and frequency spectrum draw (3) According to DTMF signal frequency spectrum to determine represented by symbols and input symbols unanimously.)

说明：  大模型的采样点时间波场图。还是先前的大模型，这次采用了十个检波器记录数据。通过修改常量可以达到修改检波器数目的目的。C源程序，MATLAB绘图。(Large model sampling time to wave field map. Is a large model of the previous, this time using 10 detectors record data. Constant change can be achieved by modifying the detector number of purposes. C source code, MATLAB graphics.)

包括各种经典功率谱估计方法，如welch、周期图等(Including a variety of classic power spectral estimation methods, such as welch, cycle maps )

利用MATLAB实现聚类~MATLAB程序~多种方法实现~(Clustering ~ MATLAB using MATLAB program a variety of methods to achieve ~ ~)

利用GNSS 进行高精度导航定位的前提是正确固定载波相位观测值的整周模糊度。由Galileo 系统的4 个载波观测值可以 形成诸多有良好特性的组合观测值,利用这些组合观测值,结合MCAR 方法,可以有效地确定整周模糊度。(The use of high-precision GNSS navigation and positioning the premise is correct carrier phase observations fixed integer ambiguity. May consist of four carriers observations Galileo system There are many good characteristics to form a combination of observations using a combination of these observations, combined with MCAR method can effectively determine the integer ambiguity.)

最短距离的求解，用于神经网络，复杂网络等网络间两点的最短距离(shortestpath)

matlab code for 2DPCA

阵列信号处理中的旋转不变子空间法。 原创。。。。。。。。。。。。(Array signal processing in the rotation invariant subspace method. Original. . . . . . . . . . . .)

说明：  线性约束最小方差准则和最小方差无失真响应准则，两种用途广泛的自适应波束形成算法，可形成方向图(Linear constrained minimum variance criterion and minimum variance distortion free response criterion, two widely used adaptive beamforming algorithms, can form pattern)