kalman

conventional OFDM for LTE-A

说明：  认知无线电技术的提出是为提高频谱利用率，而认知无线实现的关键技术是频谱感知，众所周知协作检测提高了衰落环境中认知用户系统检测的性能，该文章是基于协作检测提出新的检测方案，利用了双门限方法提高了系统性能，兼顾带宽有限和增强性能两个方面，是基于门限检测的协作检测性能优化的前提。对以后门限优化协作检测非常有用。(In this paper, we employ a double threshold method in energy detector to perform spectrum sensing, while a fusion center in the cognitive radio network collects the local decisions and observational values of the secondary users, and then makes the final decision to determine whether the primary user is absence or not. Simulation results will show that the spectrum sensing performance channels is improved significantly under the proposed scheme as opposed to the conventional method.)

tricolor attenuation model

matlab实现互现关运算,并采用雅克比——约当法实现逆矩阵的运算，在matlab下测试通过。(Complete correlation and invmaxwith matlab)

OFDM系统利用频域LS算法解决IQ不平衡问题(Solve IQ Imbalance problem for OFDMSystem)

用matlab来仿真floyd算法，并计算任意两点的最短路径和路由；(Using matlab to simulate floyd algorithm, and calculate any two of the shortest path and routing )

里查得森(Richardson)法解偏微分方程的程序。解的是定步长的抛物型偏微分方程： du/dx - a * d2u/dx2 = 0 在程序中可以更改 a 的值以实现不同系数的解。由于它是一种显式格式，解的结果不稳定 在Matlab7下面运行发现竟然有一些值达到十的几十次方,这是算法本身决定的。不是程序有错误(Richard Anderson (Richardson) Solving partial differential equations procedures. Solution is scheduled to step parabolic partial differential equation: du/dx- a* d2u/dx2 = 0 in the procedure can be changed in order to realize the value of a different coefficient of the solution. Because it is an explicit format, the result of instability in the solution of the following Matlab7 running even found some value reached ten dozens of parties, this is the decision algorithm itself. Not a procedural error)

发送单极性码元，经过升余弦滚降，画出功率谱和眼图。(this code, or after Cosine paint power spectrum and eye diagram.)

分布式发电的PQ控制研究仿真，通过MATLAB/simulink进行仿真(PQ control study simulation of distributed generation )

基于MATLAB的二进制数字系统的调制(包括2ask_2fsk_2psk_2dpsk)(Based on the the MATLAB binary digital modulation (including 2ask_2fsk_2psk_2dpsk))