DES

用小波变换来对跳频信号进行分析，并估计参数，是一个叫好的办法(Wavelet transform of the frequency hopping signal is analyzed and estimated parameters, is a way to applause)

说明：  多项式拟和阶跃函数的小程序！对于多项式反演有一定的启发(Polynomial to be a small step function and procedures! Polynomial inversion for some inspiration)

regular discrete time fourier transformation on matlab (source code)

说明：  用于说明程序如何可以用于一个点目标的相控阵扫描(to show how the procedures can be used for making a phased array scan of a point target)

说明：  非线性振动系统lyapunov指数计算必备(Calculation of Lyapunov exponent for nonlinear vibration system)

implementing laplacian

间接法功率谱分析代码，数字信号处理领域常用(Indirect method power spectrum analysis code, and digital signal processing used)

image segmentation of car number plate.

正交频分复用(OFDM)技术是一种可以有效对抗符号间干扰(ISI)的高速数据传输技术。OFDM是一种特殊的多载波调制方式，它的基本思想是将高速传输的数据流通过串/并转换，变成在若干个正交的窄带子信道上并行传输的低速数据流。OFDM接收机有三个关键技术：信道估计技术，降低峰均比(PAPR)技术和同步技术。OFDM技术能有效的对抗多径衰落等，有着诸多的优点，但是OFDM有一个发展瓶颈，即OFDM信号的峰均功率比很大，很容易导致OFDM信号的交调失真和系统性能的下降。因而如何降低OFDM信号的峰均功率比一直是OFDM技术的一个研究热点问题。论文针对上述问题，重点研究了降低OFDM信号的峰均功率比的SLM与PTS算法，并利用Matlab对算法进行了仿真研究，并对仿真结果进行了分析。(Orthogonal frequency division multiplexing (OFDM) is a high-speed data transmission technology that can effectively combat inter-symbol interference (ISI). OFDM is a special multi-carrier modulation method, its basic idea is to high-speed transmission of data stream through the serial/parallel conversion, in a number of orthogonal narrowband sub-channel parallel transmission of low-speed data stream. OFDM receivers have three key technologies: channel estimation techniques, reduced peak-to-average ratio (PAPR) techniques and synchronization techniques. OFDM technology can effectively combat multipath fading, etc., there are many advantages, but OFDM has a bottleneck in development, that is, OFDM signal peak power ratio is large, it is easy to lead to OFDM signal intermodulation distortion and system performance degradation. Therefore, how to reduce the peak-to-average power ratio of OFDM signal has been a hot topic in OFDM technology. In this paper, the SLM and PTS algorithms for reduc)

用于产生gamma分布的噪声序列，以及分析gaussian噪声的各参数。(Gamma distribution used to generate the noise sequence, as well as the analysis of Gaussian noise in each parameter.)