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文章讲述了现在韩国的频谱政策和动态频谱接入技术。过去韩国的频谱管理政策需要特权，并且只有一小部分频谱可以公用。随着无线技术的发展，现在，韩国政府，使用了机遇动态频谱接入的新型频谱策略，例如LBT技术用于REID，UWB和FACS等。MIC还考虑如何在DTV过渡完成后，重新分配频谱。新型的无线电技术如认知无线电和SDR将在UHF边带中应用新的服务。MIC试图用一用有效地方式开放频谱并接受新技术用于频谱策略中。(In this paper, we introduce spectrum policies and dynamic spectrum access technologies in Korea. In the past, Korea spectrum management was the command and control with exclusive usage rights and small portions of spectrum commons bands. With the development of the radio technologies, Recently, Korea government, MIC(ministry of information and com- munication), has been adopting new spectrum policies based on dynamic spectrum access technology such as LBT(Listen Before Talk) for RFID, UWB, and FACS(Flexible Access Common Spectrum) etc. MIC is also considering spectrum reallocation of digital dividend bands after DTV transition. New radio techniques such as cognitive radio and SDR will be applied to new services in this UHF band. MIC is trying to open the radio spectrum in an efficient way and adopt new technology into spectrum policy. Thus MIC is extending the open spectrum such as spectrum commons and spectrum liberalization bands. )

说明：  编程珠玑源代码 很经典 都是c和c++的源代码(Abas programming source code is very classic and c are c++ Source code)

说明：  幅频响应特性图[h1,w]=freqz(b1,1,N,1) [h2,w]=freqz(b2,1,N,1) (Amplitude frequency response characteristics of Figure)

蒙特卡罗程序，是个matlab m文件的程序，可以直接调试运行 (Monte Carlo procedure is a Matlab m documentation procedures, and can directly debugging operation)

matlab-7.0学习的源程序 (含基本命令)(matlab-7.0-source_code)

MATLAB在ABC边界上的FDTD程序仿真程序。(MATLAB in the ABC program on the border FDTD simulation program.)

说明：  矩阵类,自己编写,通过较多考验,符合matlab编程习惯,可处理无穷维矩阵和向量(matrices, their preparation, adoption more tests, with Matlab programming habits can handle infinite dimensional matrix and vector)

Matlab_曲面插值和拟合，dajie可以看看(something about Matlab_b-spline)

说明：  复杂网络经典BA模型以及两个改进的BA模型，分别封装成函数。输入参数有：网络节点个数，初始节点个数，新店与就网络连边的数目，初始网络边的连接(Complex network classic BA model and two improved BA model, are encapsulated into a function. Input parameters: the number of network nodes, the initial number of nodes, the new store on the edge of the network even number side of the initial network connection)

通讯系统仿真interfunaware(DCA) in JOINT system(Communication System Simulation interfunaware (DCA) in JOINT system)