replot

this file simulates encoding turbo by using matlab

用四阶亚当斯显式公式求解常微分方程初值问题是一种比较有效的方法(Adams with the fourth-order explicit formula for solving ODEs is a more effective method)

时频分析工具箱包括短时傅立叶变换和二次型时频分析的matlab代码，好不容易下载下来的贡献给大家(The Time-Frequency Toolbox (TFTB) is a collection of about 100 scripts for GNU Octave and Matlab (R) developed for the analysis of non-stationary signals using time-frequency distributions. It is primary intended for researchers, engineers and students with some basic knowledge in signal processing. )

OFDM系统在AWGN和多径信道下的仿真。包括cyclic prefix,pilot,channel estimation，误比特率曲线以及实验报告（英文）(OFDM system in AWGN and multipath channel simulation. Including the cyclic prefix, pilot, channel estimation, bit error rate curve and the experimental report (English))

Simulink model for QBSK

Fifth-order/Sixth-order Runge-Kutta-Verner variable step-size method

对电力线的噪声进行分类，并对各类噪声进行建模及仿真，并且仿真了电力线信道。(The noise of power line is classified, and all kinds of noise are modeled and simulated, and the power line channel is simulated.)

Single input single output system

说明：  SGA（Simple Genetic Algorithm）是一种强大的智能多变量优化算法，它模仿种群繁殖规律来进行 优化。 本SGA可以优化变量，求最小值,最大值（当把函数倒数也就求最小值啦） 并且支持浮点编码，grey编码，二进制编码；轮赌法选择，锦标赛选择；单点交叉，均布交叉，浮点交叉； 单点变异，浮点变异；(SGA (Simple Genetic Algorithm) is a powerful smart multi-variable optimization algorithm, which mimics the reproduction of law to be optimized. The SGA can be optimized variables, minimum, maximum, (when the function will last for the minimum is) and support for floating-point encoding, grey code, binary code round of betting method selection, tournament selection single-point crossover, uniform Cross, floating-point crossover single point mutation, floating-point mutation )

傅里叶变换后频谱图 B：陷波函数作用后的频谱图 C：经逆变换的滤波后图像，效果不是很理想 Ifft2：为验证自己的快速傅里叶变换程序的正确性，用matlab自带逆变换程序将频谱逆变换后图形，与原图相符，说明快速傅里叶变换程序正确。(This is a FFT )