pca

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)

二用户CDMA系统，信道为加性高斯信道，使用BPSK调制，15位M序列扩频，可以正确解扩解调。 输出为2用户的基带信号、扩频信号、PSK调制信号、解调信号的时域和频域特性，给出两个用户分别的误码率。 (Second, the user CDMA system, channel for the additive Gaussian channel, using BPSK modulation, 15 M Sequence Spread Spectrum, you can correct demodulation despreading. Output of 2 user' s baseband signal, spread spectrum signal, PSK signal modulation, demodulation signal time domain and frequency domain characteristics of the two users are given the bit error rate, respectively.)

Simulation of Barrage-Type Jamming for Synthetic Aperture Radars 在雷达干扰中常用的(Simulation of Barrage-Type Jamming for Synthetic Aperture Radars)

A simple case which uses MATLAB for ploting phasor quantities. Apply the fault during simulation run and observe phasor quantities (you can change type of fault)

实现齿轮啮合分析，齿轮传动非线性分析，对扭转振动方程组进行求解，可得到齿轮扭转角随时间变化相关参数(Gear meshing analysis)

旋转圆盘的传递矩阵算法计算变厚度圆盘的应力位移(Rotating disk of the transfer matrix algorithm to calculate the stress variable thickness disc displacement)

Demo of Level set project

This document is astep by step guide to design digital filters using matlab

MODULATOR This function modulate the forward Channel chips. Block Diagram InChips -> [Walsh] -> [Spreading] -> [Output Tx Shaping Filter] Inputs: chips - chips sequence to transmit MFType - Shaping Filter type (default - Rise Cosine) Walsh - Used row of Walsh matrix Outputs: TxOut - Transmitted signal (analog signal) PN - PN sequence for I/Q Channels MF - mathed filter taps (Shaping Filter)

小波分析理论与MATALB R2007 实现第四章代码，一些简单例子(Wavelet theory and MATALB R2007 A Chapter of code, some simple examples)