rk_4

最短路这个说明倒不是说明函数的功能，只是声明一下函数中出现的问题。 shortest()函数没有问题，在secshortest中我希望只得到一条次短路（或几条roadcost()值相同的次短路），结果却出来好几条，我仔细检查了一下程序，应该没有什么问题。 因此在使用时，要得到次短路，只能用roadcost()函数分别求一下各条路的权重和，找到最小的。 有些奇怪 (short path)

本书籍包括所有无线通信系统中的数学模型，内容丰富。(environmenet of wireless communication)

audio watermark detection

信号处理源码，包含常用的各种滤波器，功率谱计算，Z变换，线性卷积等，Matlab实现。(Signal processing source code that contains a variety of commonly used filters, power spectrum calculation, Z transforms, linear convolution and so on, Matlab implementation.)

This demo introduces Matched Filter in CDMA system schemes wherein the data stream is subdivided into independent sub-streams, one for each transmit antenna employed. As a consequence, they provide a multiplexing gain and do not require explicit orthogonalization as needed for space-time block coding.

生成一系列X-Y多项式的程序，当你输入K值时，可以生成K（K-1）/2个基函数。可以直接调用(Generates a series of x-y polynomial program, when you enter K value, can generate K (K- 1)/2 basis functions.You can directly call)

ekf滤波器程序，用于导航方面的。用MATLAB写的。还行(ekf filter program, used for navigation. Written using MATLAB. Okay)

Calculates the result of Euler s Phi funtion for any natural number less than 10^18.

MATKABB NICE VERY VERY

本程序是关于卫星上下变频的简单的实现算法，首先产生双边带调制信号，与收本振混频后，通过低通滤波器完成下变频。再与发本振混频，通过高通滤波器后完成上变频(This program is a simple algorithm on the satellite and down-conversion, the first double-sideband modulation signal generated, after the close of the oscillator mixer, low-pass filter complete the conversion. Again and send the local oscillator mixer, followed by the completion of the high-pass filter frequency)