nihezhoutiao

本资料包包含了系统的matlab建模用算法(This pack contains the system matlab modeling algorithm used)

对基于LMS算法的通道失配校正模型进行仿真。仿真不同信噪比条件下校正前后的通道失配度改善情况，参考信号为叠加有噪声的随机方波信号。(LMS algorithm based on channel mismatch correction model for simulation. Channel mismatch before and after the correction to improve the signal to noise ratio of different simulation conditions, the reference signal is a random noise superimposed on a square wave signal.)

OFDM is one of the best physical-layer candidates for cognitive radio (CR) systems, but rectangular pulse shaping gives rise to large spectrum sidelobes and interferes with the licensed user on the adjacent band. In this paper, an approach is derived based on the signal continuity to measure the spectral decay rate of the shaping pulse for OFDM.

The code is useful for solving partial differential equations such as the advection equation, the 2 dimensional heat equation. Also contains code to simulate two falling balls align in one axis with rebound. Also has some code for implementing the Successive over-relaxation method.

目标因子分析，用于找寻主因子数的个数，用途广泛(Target factor analysis, to find the main number for the number of factors, versatile)

一个很好的三维动态matlab实例，是学习的好资料，并且有解释说明部分(A good three-dimensional dynamic matlab instance, is a good learning materials, and there are some explanations)

多径效应的仿真，瑞利平坦衰落信道的改进Jakes模型；得出信号功率随多普勒频移的变化(The simulation of the multipath effect)

说明：  文主要目的是针对讯号频谱分析仪(Signal spectrum analyzer)做功能测试，以确定讯号频谱分析仪之各种运算功能正确，其中测试共 分为正弦与余弦波检查、反假象滤波器检查(Antialiasing Filter Check)、频率响应函数与相位角检查(FRF & Phase Check)、自身能量密度函 数检查(Power Spectrum Check)、动态范围检查(Dynamic Range Check)等五个项目的快速傅立叶转换检查(Fast Fourier Transform Check)，并 对五个项目之测试原理、测试步骤及测试结果加以说明，提供频谱分析仪功能测试之正确方法，亦可作为自制频谱信号处理单元及频谱分 析程式之验证。(The main purpose of the text is for the signal spectrum analyzer (Signal spectrum analyzer) to do functional testing, to determine the signal spectrum analyzer features a variety of computing the right, which is divided into sine and cosine test wave inspection, anti-false filter inspection (Antialiasing Filter Check), the frequency response function and phase angle of inspection (FRF &amp Phase Check), its energy density function check (Power Spectrum Check), dynamic range checking (Dynamic Range Check) and other five projects FFT check (Fast Fourier Transform Check ), and principles of the five test items, test steps and test results to show that the spectrum analyzer to provide the proper testing method may be used as self-spectrum signal processing unit and the spectral analysis of the verification.)

example Method relay. Adaptive control

说明：  Recording and playback audio signal display