MATLAB-basic

数字基带系统将数字信号从时域上看时数字滚降，需要画出滚降前后的波形展示出来。频域上带宽变化了。输入滤波器之前的波形与采样判决之后的波形。采样判决前的频谱。 采样判决后的码型。 2、眼图（采样判决之前的眼图）（信噪比大眼图清晰） 3、误码曲线，（横坐标时信噪比，纵坐标时误码率） 4、Arfa变化对误码特性的影响，变好还是变差(变好)，眼图清晰度变化（清晰），传递函数的带宽的变化。（带宽越大）(1.Digital baseband system point of view the digital signal from the time domain when the number of roll-off, you need to draw the waveform displayed before and after the roll-out. The frequency domain, the bandwidth change. Input filter and sample ruling before the wave after wave. Sample pre-judgment spectrum. Sampling pattern after the verdict. 2, the eye diagram (eye before sampling decision) (SNR big eye clear) 3, the error curve (abscissa when the signal to noise ratio, bit error rate when the vertical axis) 4, Arfa impact of change on BER performance, get better or worse (getting better), change of eye-definition (clarity), the transfer function of the bandwidth changes. (The greater the bandwidth))

it is the code for 4-ask simulation that is useful for telecommunication

8PSK的软解调算法，可用于软解调和信道译码的软信息输入(Soft input soft information 8PSK demodulation algorithm can be used for soft demodulation and channel decoding)

说明：  遗传算法包括基本算法的程序及其在优化函数方面的应用(genetic algorithms include basic algorithm for the optimization process and its function in the application)

BURG方法谱估计 采用BURG迭代方法计算系数，在采用AR模型的谱估计进行谱峰搜索(BURG spectrum estimation methods BURG iterative method using coefficients in the AR model spectrum estimation using the peak search)

QAM调制与解调基本功能的实现与仿真，包括了编码、信道、译码部分(QAM modulation and demodulation implementation and simulation of basic functions, including coding, channel decoding section)

MATLAB语音处理的函数工具箱，为语音处理提供基本函数(MATLAB toolbox voice processing functions, provide basic functions for the voice processing)

利用原点唯一幂法求解矩阵的最大特征值及其对应的特征向量(Of origin only power method for solving matrix eigenvalue and its corresponding feature vector)

一直任意两条线，可以是直线也可以使曲线，求这两条线的交点(intersection of two curves)

各类非线性方程组求解的公式的实现，较为简洁，可直接调用(Various types of nonlinear equations of the formula to achieve, the more simple, direct call)