butterworthilter

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. )

这种小波构造方式适合于各种DB系列的小波，但面对db6等比较长的小波，则均衡器的权长要足够长(Wavelet way that is suitable for a variety of wavelet DB series, but in the face of such a long db6 wavelet, it' s the right balance should be sufficiently long length)

本源码是在matlab环境中进行连续小波变换，不用调用matlab中的小波函数。(The source code is in the matlab environment, continuous wavelet transform, do not call matlab in the wavelet function.)

用matlab实现的RS码编码与解码器，实现了15，11RS码的编解码仿真，并编写了测试驱动，直观明确(Matlab implementation of RS codes with encoding and decoding devices to achieve 15,11 RS code decoding simulation, and the preparation of the test-driven, intuitive, clear)

直线插值 四象限插值 数控领域的 脉冲增量法 很老 但很经典 的程序 (Four-quadrant linear interpolation pulse incremental interpolation method of NC field is very old but it is the classic procedure)

可以用此代码信号实现频谱仿真，希望对大家有用(You can use this code to achieve spectrum signal simulation, we hope to be useful)

TD-LTE PMCH matlab source code

plotting 3d scope in matlab simulink

NILM中的事件检测方法，附有一个示例性的测试程序，可参考(event detection in NILM)

2008年全国大学生数学建模获奖论文所需程序代码，其中有较详细的matlab编程，应该有些用处吧(Mathematical Contest in Modeling 2008, papers required for award-winning code, including more detailed matlab programming, it should be of some use)