Auto_RussiaBlock

：提出一种基于独立成分分析（ICA）和位隙动态分组技术的超高频（UHF）射频识别（RFID）多标签防碰撞算法。利用ICA 算法实现多目标的同时识别，利用动态位隙标签分组保证阅读器同时读取的标签数少于或等 于其天线数，从而使ICA 工作于非欠定状态(A novel ultra high frequency (UHF) radio frequency identification（RFID）anti-collision algorithm based on independent components analysis (ICA) and dynamic bit-slot grouping technology was proposed. The ICA algorithm was used for identifying several tags simultaneously. The dynamic bit-slot tags grouping technology was used for ensuring the number of tags read by a reader at the same time was less than or equal to its antennas’ number, and enabling the ICA wouldn’t work in an underdetermined state. Theoretical analysis and simulated experimental results show that the tags identification rate of the proposed algorithm is far more than that of traditional stochastic or deterministic TDMA RFID anti-collision algorithms.)

2FSK的调制与解调，基于simulink，相干与非相干解调(2FSK modulation and demodulation, based on simulink, coherent and non-coherent demodulation)

先对语音信号进行采集、播放，分析其频谱，对该信号源添加噪声，再播放音频并分析频谱，然后分别通过IIR低通、带通滤波器和FIR低通、带通滤波器，分别播放音频和得到滤波后的频谱。(Firstly， voice signal acquisition, play, analyze its spectrum to add noise to the signal source, and then play the audio spectrum analysis, and then were by IIR low-pass, band-pass filter and FIR low-pass, band-pass filters, respectively, play audio and get the spectrum after filtering.)

说明：  此文件包括jake信道仿真模型的过程程序，希望大家发表意见(Anonymous channel simulation model of the procedure, hoping to express their opinions)

说明：  模糊C-均值聚类方法的原函数，不用再进行编写，直接可以哄(the function of FUZZY C CLUSTERING )

香农编码和译码，程序内有详细的编写说明文字哟。(Shannon coding and decoding, the program contains a detailed write captions yo.)

声波波动方程数值模拟。地震的一个小程序。适合初学者看看。大神就不用下了(Numerical simulation of the acoustic wave equation. Earthquake a small program. Suitable for beginners to see. God would not have got big)

Generate 4QAM sistem

Makes a simple avi movie from a sequence of frames The user can control the display time of each frame. The movie is created in the same folder where this function is run. Usage: Inputs: name: root name of the framse filetype: .bmp , .jpg , .jpeg , .tif ,,,, number_of_frames: number of the frames display_time_of_frame: it is the display time of each frame Output: it creates a file named as Movie.avi in the same folder of this function

qc—ldpc编码的matlab源码，分为好几个版本，small文件夹里的支持小的稀疏矩阵，large文件夹里的支持较大的稀疏矩阵。test文件为顶层(qc-ldpc the matlab source code is divided into several versions, small folder in the support of a small sparse matrix, large folder in the support of a larger sparse matrix. test document for the top-level)