Hz_propagation

平稳随机信号谱估计 使用两种谱估计方法将信号和噪声分离：周期图法谱估计和Levinson-Durbin递推法谱估计。其中每种方法又细分为自编程序和使用matlab自带函数两种。( Random signal model is estimated using two methods of spectrum signal and noise separation: periodogram spectral estimation method and Levinson-Durbin recursive spectrum estimation method. Each method which is divided into self-fine procedures and the use of two matlab own function.)

信号与系统基础知识包括连续信号与模型、离散信号与模型；常用信号变换包括Z变换、Chirp Z变换、FFT变换、DCT变换和Hilbert变换等；离散系统结构包括IIR、FIR和Lattice结构；IIR滤波器设计包括模拟和数字低通、高通、带通与带阻滤波器设计，以及基于冲激响应不变法和双线性Z变换法的IlR滤波器设计等；FIR滤波器设计包括基于窗函数、频率抽样法和切比雪大逼近法的FIR滤波器设计；平稳信号分析包括经典功率谱估计、基于参数模型的功率谱估计和基于非参数模型的功率谱估计；非平稳信号分析包括STFT变换、Gabor展开、Wigner-Ville分布与Choi-Williams分布；非高斯信号分析包括基于非参数法的双谱估计、基于参数模型的双谱估计，以及双谱估计的应用；信号处理的GUI实现包括滤波器设计与分析的FDATool工具和滤波器设计与信号分析的SPTool工具。(signals and systems based on knowledge, including continuous signal with the model, discrete signal and model; Common signals include transform Z transform, chirp Z-transform, FFT transform. DCT and Hilbert transform; Discrete system architecture including IIR, FIR and Lattice structure; IIR filter design, including analog and digital low-pass, high-pass, band-pass and band stop filter design, Based on the impulse response of the same law and bilinear Z transform the IlR filter design; FIR filter design including on the basis of the window function, frequency sampling and snow all over the big approximation of FIR filter design; stationary signal analysis include classical power spectrum estimation, Based on the model parameters of the power spectrum estimation and non- parametric model b)

一个离散定常系统，参数结构已知，给定期望传递函数分母多项式，用极点配置方法设计系统，使系统输出无稳态误差(A discrete time-invariant systems, the parameter structure is known, given expectations of the transfer function denominator polynomial method of pole placement design system, the system output steady-state error)

说明：  matlab中的三十个经典机器学习案例源码(30 classical machine learning cases while coding with Matlab.)

spaital modulation技术相比于v-blast,mrc等方式有了长足的进步。4bit/s/Hz频谱利用率下的空间调制程序，利用BPSK,4QAM和8QAM调制方式。(spaital modulation technique compared to the v-blast, mrc, etc. has made substantial progress. 4bit/s/Hz spatial modulation spectrum utilization under the program, using BPSK, 4QAM and 8QAM modulation.)

说明：  利用空间平滑方法对信号的DOA进行谱峰估计(The use of spatial smoothing method for signal DOA estimation peaks)

ac and dc power transmissions. No alterations of conductors, insulator strings, and towers of the original line are needed

matlab C编程函数速查手册，很有参考价值(matlab C Programming Functions Quick Reference, great reference value)

This is the MATLAB for the DSP working behind FM transmitters in FPGAs etc.

在语音识别中来完成对语音信号的端点检测以便于减少冗余(In speech recognition to complete the speech signal endpoint detection in order to facilitate the reduction of redundancy)