yuijie_v79

说明：  windows下用来画曲线的小程序，看看好不好用(windows under the curve for painting small procedures to see is really handy)

不同信噪比下的信道仿真，只是M文件，是不同的仿真(Different SNR channel simulation Different SNR channel simulation Different SNR channel simulation )

an other test for hinfini

matlab的.m文件，用来测量阶跃信号仿真时的超调量，调节时间。(matlab .m file is used to measure signal simulation step when the overshoot, settling time.)

说明：  matlab 面向对象编程 从具体实例出发 详细讲解编程中的问题(matlab object-oriented programming starting from concrete examples to explain in detail the problems in programming)

This M Code simulate the effects of clipping and filtering on PAPR PAPR reduction in OFDM-based wireless standard.Also the performance of BER versus SNR of original OFDM signals with PAPR reduction based on clipping and filtering schemes over AWGN channel is evaluated. The simplest and most widely used technique of PAPR reduction is to basically clip the part of signals that are outside the allowed region.Clipping methode introduces both in band distortion and out of band radiation into OFDM signals which degrades the performance including the BER and spectral efficiency.Filtering can reduce out of band radiation after clipping although it can not reduce in-band radiation distortion.However, clipping may cause some peak regrowth so that the signal after clipping and filtering will exceed the clipping level at some point.To reduce peak regrowth a repeated filtering and clipping operation can be used to obtain a desirable PAPR at a cost of computational complexity increase.

psk modulation is done using simulink model in this document. hope u get knowledge

功率开关器件全桥电路设计，经调试，绝对正确(power_bridges)

说明：  主元素分析源程序代码，实现主元素分析的完整代码(Principal component analysis source code to achieve the complete code for principal component analysis)

用于对简单电力系统网络的潮流计算，只需输入线路元件参数，节点电压初值，PQ,PV节点的初值，即可输出各节点电压，平衡节点的功率，线路的功率。(for easy power system)