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研究了基于信号强度模型的室内定位技术. 通过运用线性回归、补偿式线性回归和多元回归方法，利用 仿真数据建立了信号强度模型.(Indoor positioning technology based on signal strength model by using linear regression, the compensated linear regression and multiple regression method using simulation data signal strength model.)

说明：  完整详细的介绍OFDM系统源码，保证代码能运行。(OFDM system described in detail the full source code, to ensure that the code can run.)

一个选择器特效大全的例子：KNMultiItemSelector，IOS编程学习源码，很好的参考资料。(A selector effects Guinness examples: KNMultiItemSelector, learning IOS programming source code, a good reference.)

文件中为几类贝塞尔函数，基于MATLAB编写(Bessel functions of several files, based on MATLAB prepared)

可以选取图像的部分进行放大操作，能够更好的展现图片的细节，论文制图必备工具。通过调用mmzoom命令即可实现(To partial enlarge fig, which can better shows the detail of picture. It s an essential tool for paper writing. It can be implemented by entering mmzoom .)

dijkstra矩阵算法，可以计算出最短路，第一次上传请见谅~(dijkstra很有用的！)

给音乐添加噪声再通过低通滤波器滤掉噪声，性能改善过后能明显看到效果。(Add noise to the music and through a low pass filter filters noise, performance improvement can be evident after the effects.)

说明：  MTALAB源代码，关于数字匹配，可以识别图片上的数字和字母，代码简单，可提供学习。(MTALAB source code, on the number of matches, can identify numbers and letters on the picture, the code is simple, to provide learning.)

This file describ the BFSK_rayleigh.

离散系统结构。包括IIR系统、FIR系统、Lattice结构及其MATLAB实现。(Discrete system structure. Including IIR systems, FIR systems, Lattice structure and its MATLAB implementation.)