In this paper, we first propose a cryptographic authentication protocol which...

一种无限定位，toa时延定位算法的代码。matlab源程序 希望采纳( | | SCRIPT: simMLE | | PURPOSE: Simulate a relative location system by generating | random measurements and maximizing the likelihood fcn. | After many trials, show the results vs. the Cramer-Rao Bound. | | AUTHOR: Neal Patwari | http://www.engin.umich.edu/~npatwari/ | | REFERENCE: Relative Location Estimation in Wireless Sensor Networks | (N. Patwari, A. O. Hero, M. Perkins, N. S. Correal, R. J. O Dea), | IEEE Trans. Signal Processing, vol. 51, no. 8, Aug. 2003, pp. 2137-2148. | tic Use globals to allow minimization functions access to network info, debugging info. global refDevices blindDevices totalDevices linearRefLocs dhat funcEvals dfuncEvals Basic simulation parameters roomSize = [1,1] Room size, meters gridSize = 5 How many sensors per side refDevices = 4 How many references (must be same length as actualRefLocs) trials = 20 How many inde)

说明：  RFID通讯实验，实现IC卡与电脑进行通讯的例程代码，帮助新手进行学习(The experiment of RFID communication realizes the routine code of communication between IC card and computer, and helps novice to learn.)

基于AT89C52单片机  12864液晶显示  继电器作为开关   

维格纳-威尔分布三维图面图，跳频信号的stft，跳频信号的维格纳-威尔分布的频谱图(Wigner- Will the distribution of three-dimensional surface maps, frequency hopping signal stft, frequency hopping signal Wigner- Will the distribution of spectrum)

提出两种基于盲源分离方法的标签防碰撞算法，解决标签密集的多天线RFID 系统中的标签碰撞问题。在一个确定的 时隙内， 当发射反向反馈信号的标签数目不超过阅读器天线的数目时， 这些标签可以通过盲源分离算法被阅读器成功识 别；信号，直到所有标签被成功识别出来。仿真结果表明，新算法能使得RFID 系统获得更加高效的吞吐率，能比基于ALOHA 的标签防碰撞算法具有更小的时耗，尤其是当标签数目较大时更加显著。(two tag anti－collision algorithms based on blind source separation (BSS) method are presented to solve the tag collision problem for dense multi －antennas RFID system in this paper．When the number of tags that transmitting backscattering signal in a confirmed slot is not exceed the number of antennas of the reader,these tags can be identified by using blind source separation algorithm．Otherwise,these tags cannot be identified,and they randomly one of other slots in the same frame and transmit the return signal to the reader until all tags have been identified successfully)

this file can explain how to coding rfid in c (rfid tutorial)

RFID communicate. This is for reading rfid card.

matlab code and tutorial for rfid

chirp fourier transform 线性调频Z变换(CZT) 的matlab功能函数，该方法通过CZT变换获得精确的等价于离散傅里叶变换结果的间谐波信号的频率分布估计值,可以得到精确的各次谐波和间谐波参数,利用该函数相同采样频率下该方法的检测精度更高。(This routine allows the evaluation of the DFT over an arbitrary range of frequencies as its name implies this lets you zoom into a narrow portion of the spectrum.)

双相间隔码解码（FM0）的C语言实现，应用于RFID领域，基于ISO.IEC_18000-6C协议。(The realization of FM0_Decode with c language.)