aggregate-interference-in-cognitive-radio

说明：  基于能量检测和周期循环检测的认知无线电频谱检测matlab代码 用周期循环检测算法检测： 首先运行a.m程序，通过此程序运算得出循环频率a值； 再运行zhouqi.m程序，对a值进行确定，通过周期循环算法对信号进行检测； 用能量检测算法检测： 运行nengliang.m检测程序，使用能量检测对信号进行检测。 检测完毕，对检测性能进行分析。 (Cognitive radio based on energy detection spectrum detection matlab code)

costas环的simulink实现，可以直接在matlab上运行实现通信系统中的载波同步，对于学习或设计通信系统有很大帮助(simulink realization of costas loop that can run directly on the matlab implementation of carrier synchronization in communications systems, communications systems for the study or design of great help)

获取计算机中的时间信息，创建界面仿真时钟，动态显示时间。(Get the time information in the computer, create interface simulation clock, dynamic display time.)

matlab code for slm in the ofdm system .OFDM is a frequency-division multiplexing (FDM) scheme used as a digital multi-carrier modulation method. A large number of closely spaced orthogonal sub-carrier signals are used to carry data on several parallel data streams or channels.

CDMA2000下行链路仿真模块的matlab实现代码(CDMA2000 downlink simulation module)

利用matlab的GUI模块搭建了拍振的产生，两列同频率的叠加。(Using the GUI module of MATLAB to set up the production of the beat vibration, the two column of the same frequency of the superposition.)

这是一个关于LDPC中的GIRTH4-COUNT的代码！( This program can produce the Parity Check Matrices of girth4-count codes, while Ref. remindes you that these codes are not good as the LDPC codes IEEE802.16e for continuous bits errors. )

伪随机数发生器: “利用随机序列进行间隔控制，选择消息隐藏位”的描述算法、Matlab程序（可参考所给的程序）、原理与步骤(some thing about watermark)

"Statistical Sims.rar" Computing, mean, standard deviations, probability density functions, Autocorrelation functions from 1st principles of two sinusoidal waves.

说明：  “matlab算法集合打包,包括:数据拟合,数学规划,递推关系式的作图程序,最小生成树Prim算法,顶点覆盖近似算法,哈密尔顿回路,画等温线,离散优化,模拟退火应用,生成全排列矩阵,时间序列分析程序,中国大学生数学建模竞赛题解以及最短路径等等。”("Matlab algorithm set package, including: data fitting, mathematical programming, recursive relational mapping program, minimum spanning tree prim algorithm, vertex covering approximation algorithm, Hamilton circuit, drawing isotherm, discrete optimization, simulated annealing application, generating full permutation matrix, time series analysis program, Chinese college students' mathematical modeling contest solution and the shortest path, etc.)