program_log2kml

说明：  A星算法用于路径规划，并包含一个界面，可以用鼠标确定起点和终点，用MATLAB语言编写，可运行。(A star algorithm is used for path planning, and contains an interface. It can determine the starting point and end point with the mouse. It is written in MATLAB language and can run.)

other for operation system and network

协作频谱感知虽然可提高系统的感知性能， 但随着感知节点数目的增加， 系统资源的占用越来越多， 系统传输效率下降． 分析了协作频谱感知方法的感知性能， 得到协作频谱感知的感知性能与感知节点数目和接 收信噪比之间的关系， 提出了一种新的次级用户节点的选择方法， 该方法有效保证了所选择节点的感知性能， 仿真验证了该算法的有效性和可靠性．(Although the cooperative spectrum sensing can improve the perceived performance of the system, but with the perception of the number of nodes increases, more and more system resources, the system transmission efficiency decreased. Cooperative spectrum sensing method of analysis of the perceived performance of collaborative spectrum sensing by the perception of performance and perception of the number of nodes and the relationship between the received SNR, a new secondary user node selection method, which effectively guarantee perceived performance of the selected node, the simulation proves the validity and reliability.)

In sum capacity of an OFDM system is maximized by allocating each subchannel to the user with the highest channel gain over this channel and distributing power among subchannels in a water-filling manner.

实现LU分解，选列主元的LU分解和不选主元的LU分解，在残差允许的范围内与MATLAB内置可以达到相同效果(LU decomposition of selected principal components)

普通通信信号bpsk,qpsk,qam调制解调(bpsk qpsk qam fsk gmsk modulation and demodulation)

带阻滤波器的实现，中心频率200HZ，带宽150HZ，来实现的(The realization of band-stop filter)

code source for simulation

求解函数的的极值，可以较快较准的找到局部极值。(Ask the extreme value of the function)

DCP moving avrage matlab code