ex3data

非常有用的非平稳信号分析工具箱，对非平稳信号参数估计很有帮助。(Useful non-stationary signal analysis toolbox, non-stationary signal parameters estimated helpful.)

获取本地图片和拍照并剪辑成头像，网上demo一般功能比较少，这里我运用到自己的项目，获取头像(To obtain the local pictures and photos and clips into head, online demo general function less, I applied to their own projects, obtain the Avatar)

基于卷积神经网络的手写汉字识别_matlab版本_可以识别509类手写汉字(Based on the _ handwritten Chinese characters recognition _matlab version convolutional neural network can identify 509 kinds of handwritten Chinese characters)

本科毕业时做的男女左右运动时提取脑电信号的功率谱，是分频提取的，也就是左、右手运动是的不同特征，程序简单易懂，还附有脑电信号、程序说明(Graduate men and women to do about movement of EEG power spectrum is divided extraction, that is, the left and right movement is different features, the program is simple to understand, but also with EEG description of the procedures)

说明：  前已提出的频谱感知方法主要包括匹配滤波器检测、 能量检测、 循环平稳特征检测以及多分辨率频谱感知. 这些方法均为单节点感知方法.然而，在阴影和深度衰落情况下， 单个节点的感知结果并不可靠， 因此， 需要对多个节点的感知结果进行融合，以提高检测可靠性， 即协作感知技术. 文献采用“或” 准则对各个 CR 感知结果进行融合. 文献则提出了基于 D-S 证据理论的协作频谱感知算法，虽然该算法的性能比“或” 准则或“与”准则要好， 但需要存储大量历史信息， 算法的计算复杂度也很高. 文献中分析了采用似然比检测(likelihood ratio test， LRT) 的软判决与采用“与” 准则的硬判决的性能， 结果表明采用软判决的协作感知性能更优(Previously proposed spectrum sensing methods mainly include matched filter detection, energy detection, cyclostationary feature detection and multi-resolution spectrum sensing. These methods are all single node sensing methods. However, in the case of shadow and deep fading, the sensing results of single node are not reliable, so, It is necessary to fuse the sensing results of multiple nodes to improve the detection reliability, i.e. cooperative sensing technology. In the literature, "or" criterion is used to fuse the CR sensing results. In the literature, a cooperative spectrum sensing algorithm based on D-S evidence theory is proposed. Although the performance of the algorithm is better than "or" criterion or "and" criterion, a large amount of historical information needs to be stored, The computational complexity of the algorithm is also very high. In the literature, the performance of the soft decision based on the likelihood ratio test)

matlab程序，包括QPSK,16QAM,64QAM等多种调制方式的调制解调(modulation and demodulation of QPSK,16QAM and 64QAM etc.)

不同的相邻分组数目v实现的pts抑制ofdm峰均比的算法,可以仿真出v越大,papr的性能越好()

TI TMSC6713 DSP 实现 OFDM的调制和解调，以及相应的matlab功能仿真程序。(TI TMSC6713 DSP realization of OFDM modulation and demodulation, and the corresponding function matlab simulation program.)

viterbi译码算法的vhdl程序，有注释和各个模块的详细说明。是一篇完整的硕士论文，有源码(viterbi decoding algorithm of VHDL procedures, has comments and a detailed description of each module. Is a complete master)

说明：  产生随机信号，采用4fsk调制方式通过一个水声信道，再采用非相干解调(Generate random signal, use 4FSK modulation to pass through an underwater acoustic channel, and then use incoherent demodulation)