Advanced-Mathematics-and-Mechanics-Applications-U

数字信号处理的各种算法的c语言代码实现。 格式是pdg的。(digital signal processing algorithms in C language code to achieve. The format is pdg.)

Content based image retrieval using color histogram and shape

注水算法是根据某种准则，并根据信道状况对发送功率进行自适应分配，通常是信道状况好的时刻，多分配功率，信道差的时候，少分配功率，从而最大化传输速率。本文运用matlab通过对注水算法在mino系统中的三种不同的情况下进行了仿真，比较出在小信噪比时，相同信噪比下利用CSI的功率注水算法获得容量优于未知CSI的平均功率分配算法；相同容量下已知CSI信噪比比未知CSI时的信噪比小3dB.当信噪比增大到一定程度时，功率注水算法所获得的信道容量将收敛到平均功率分配的信道容量。(Water flooding algorithm is based on certain standards, and according to the channel condition to adaptive allocation of sending power, usually is a good moment, channel situation more distribution power, channel is poor, less power distribution, so as to maximize the transmission rate. This paper USES matlab based on water flooding algorithm in Austin system of three different cases are simulated and compared in small SNR, under the same SNR use CSI power allocation algorithm for capacity is superior to the average power allocation algorithm of unknown CSI Same capacity known CSI signal-to-noise ratio than the unknown CSI small signal-to-noise ratio of 3 db. When the signal-to-noise ratio increases to a certain degree, the power allocation algorithm for channel capacity will converge to the average power distribution channel capacity. )

在理想信道条件下、在高斯白噪声信道条件下和在先经过瑞利衰落信道再通过AWGN信道条件下的QPSK仿真（基带输入波形及其功率谱、QPSK调制信号及其功率谱、QPSK信号星座图、误码性能等）(In an ideal channel conditions, in white Gaussian noise channel conditions and earlier through Rayleigh fading channels through QPSK simulation AWGN channel conditions (baseband input waveform and its power spectrum, QPSK modulation signal and its power spectrum, QPSK signal constellation Figure, error performance, etc.))

programming for Omni-directional image. they are useful for novice.

用粒子群算法实现图像匹配，图像可以自己更换，建议先用matlab自带图像进行调试(Particle Swarm Optimization with image matching, image Can you change, it is recommended to use own images debug matlab)

用于三分类的BP算法程序,matlab源码(three classifications for the BP algorithm procedures, Matlab FOSS)

四边形八节点等参元matlab程序，word文件，里边附带例题和源代码，并且有ANASY结果比较(Eight node isoparametric quadrilateral element matlab program)

MATLAB的求最短路径 MATLAB的求最短路径(MATLAB shortpath)

介绍了端点检测的基本方法:基于短时能量的、基于短时过零率的、双门限检测的方法(Describes the basic method of endpoint detection: Based on short-term energy, zero crossing rate based on short-term, double threshold detection method)