mimo_ofdm_slm

(1)建立DQPSK调制和解调 SIMULINK仿真模型，评估其在AWGN信道和瑞利衰落信道下的误码率性能（画出信噪比变化时的误码率曲线）； (2)基于（1）建立的SIMULINK仿真模型，分别在AWGN信道和瑞利衰落信道下发送一个实际音频文件，在接收端实时播放出来((1) the DQPSK modulation and demodulation SIMULINK simulation model is established to evaluate the bit error rate performance under the AWGN channel and the Rayleigh fading channel (the bit error rate curve when the signal to noise ratio changes). (2) based on the (1) established SIMULINK simulation model, a real audio file is sent under the AWGN channel and the Rayleigh fading channel respectively, and it is played on the receiving end in real time.)

数字信号处理相关实验，包括求系统零极点，快速傅里叶变换，长序列卷积，FIR，IIR等。(Digital signal processing related experiments, including zero and pole of the system, fast Fourier transform, long sequence convolution, FIR, IIR and so on)

说明：  实现QPSK位同步G算法，方法很经典，可以查看小数u和误差变化(Gardner matlab The QPSK bit synchronization g algorithm is implemented. The method is very classical, and the decimal u and error change can be viewed)

HART Communication Foundation - Common Practise Command Specification

说明：  基于MATLAB的adhoc网络聚类实现最小连通支配集算法(clustering of adhoc networks implemented minimum connected dominated set algorithm in matlab)

说明：  点亮led流水灯，通过调用锁相环，可以更改对应的时钟。(Lighting the LED pipelining lamp, the corresponding clock can be changed by calling the phase-locked loop.)

1）设计Butterworth型音频抗混叠滤波器； 2）参数： 下通带频率300Hz；上通带频率3400Hz； 下阻带频率280Hz；上阻带频率3600Hz； 通带最大衰减0.3dB； 阻带最小衰减40dB； 3）采用一低通滤波器和一高通滤波器级联； 4）分别确定LPF和HPF的性能指标； 5）求出两滤波器的系统函数和频率响应，并画出其幅频特性曲线； 6）求整个滤波器的系统函数和频率响应，并画出其幅频特性曲线。(1) the design of Butterworth-type audio anti-aliasing filter 2) parameters: passband frequency of 300Hz on pass-band frequency 3400Hz under the stop-band frequency of 280Hz on stop-band frequency 3600Hz passband maximum attenuation of 0.3dB minimum stopband attenuation of 40dB 3) the use of a low-pass filter and a high-pass filter cascade 4) separately to determine the performance of LPF and HPF target 5) to derive two-filter system function and frequency response, and draw its increase frequency characteristic curve 6) for the entire filter system function and frequency response, and draw its amplitude-frequency characteristic curve.)

利用lms算法和rls算法，对通过给定系统h的随机信号进行自适应滤波，通过抽头w对系统进行逆辨识与辨识，同时产生MSE 即均方误差，来描述对信号恢复的效果。(Using lms algorithm and rls algorithms h through a given system adaptive filtering of random signals, the system through the tap w reverse identification and recognition, while the mean square error MSE generated to describe the effect on signal recovery.)

蜂窝移动通信系统中的同频干扰仿真。旨在找到簇大小为N时，无线移动蜂窝系统中同频干扰的分布。(Co-channel interference in cellular mobile communication system simulation. To find the distribution of cluster size N, wireless mobile cellular systems in the same frequency interference.)

针对盲模拟调制信号的自动识别算法，利用了盲信号识别中常用的gamma、ap、dp、P等参数，并附送dsb、lsb、usb、am、fm信号的生成程序(Automatic analogue modulation recognition using MATLAB. There is also a function to generate dsb,lsb,usb,am,fm signal)