Helmholtz

用列梅兹算法确定函数的最佳一致逼近多项式(With Lie Meizi algorithm to determine the best uniform approximation polynomial function)

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.

Organizing a Global Coordinate System from Local Information on an Ad Hoc Sensor Network.pdf

利用digsilent里的matlab接口实现对电机的控制。(Digsilent inside matlab use interface for motor control.)

matlab的经典教学案例，初学者的最好资料，来看看吧。(matlab classic teaching case, the best information for beginners, have a look.)

Derivation of plane curves by means of cubic involutions

PCA is used for data classification

级联积分－梳状(Cascaded Integrator–Comb，CIC)滤波器，是种高 效滤波器。它是一种线形相位FIR滤波器，由工作在高抽样率的级联理 想积分器和低抽样率的级联微分器组成,根据抗混叠和抗镜像的指标 确定所需的级联数目。 (Cascaded integrator- comb (Cascaded Integrator-Comb, CIC) filter, is the kind of high efficiency filter. It is a linear phase FIR filter, high sampling rate by the work in the cascade of an ideal integrator and a low sampling rate of the cascade differentiator formed, according to anti-aliasing and anti-mirror of the indicators to determine the number of required cascade.)

D scope, a small program for scope control.

实现EKF滤波在导航重点的应用，精度相对较高，(achieve EKF filter in navigation key applications, a relatively high accuracy.)