bpsk

DOA信源数估计，采用MDL算法，可以有效估计信源数目。(DOA source number estimation using MDL algorithm)

（1） 分析QPSK调制、解调原理，并画出其系统框图； （2） 产生等概率且相互独立的二进制序列，作为待传输的信号，并画出其波形； （3） 进行8PSK调制，分别画出I、Q两支路信号经过乘法器后的波形以及8PSK调制波形； （4） 产生均值为0，方差为1的加性高斯随机噪声，画出其时域波形及频谱； （5） 将加性高斯随机噪声作为传输信道的干扰，画出接收端信号的时域图； （6） 进行8PSK解调，输出解码序列，画出解调后信号波形； （7） 计算系统信噪比、传输误码率。((1) analysis of QPSK modulation, demodulation, and draw the system block diagram (2) have equal probability and independent binary sequence as a signal to be transmitted, and draw the waveform and (3) 8PSK modulation, Draw the I, Q two way signal multiplier waveform and 8PSK modulation waveform (4) to produce zero mean and variance of an additive Gaussian random noise, to draw the time-domain waveform and spectrum ( 5) the additive Gaussian random noise interference as a transmission channel, to draw the time-domain diagram of the receiver signal (6) 8PSK demodulator output decoding sequence, draw the demodulation of the signal waveform computing system (7) signal-to-noise ratio, the transmission bit error rate.)

在STM32上实现单线多个DS18B20实验，通过串口监测8个DS18B20测量的温度，芯片信号等(Several DS18B20 experiments on single line are implemented on STM32, and the temperature of 8 DS18B20 measurements, chip signal, etc. are monitored through serial port)

HLP A+ Modbus 标准通讯协议格式，上位机发送数据格式，正确时变频器返回数据格式(This bit will be set to logic 1 when the receive buffer has been read and contains no new information. If there is new information available in the receive buffer that has not been read, this bit will return to logic 0. RXBMT = 1 when in Master Mode.)

comparaison of photovoltaic mppt algorithms

D2D通信matlab仿真，基于matlab的D2D设备到设备通信系统模型仿真(Simulation of D2D Communication with MATLAB)

关于常规信号，线性调频信号和相位编码信号的检测和估计(detection and analaysis of normal signal, LFM and phase coding signal.)

用DFT对连续时间信号进行谱分析，用DFT定义进行计算，不同抽样频率不同抽样点下的谱分析Matlab实例。(The continuous time signals are analyzed by DFT, and calculated by DFT definition. The Matlab examples are analyzed under different sampling frequencies and sampling points.)

基于802.16e 协议标准的LDPC码编码解码方法，采用C语言，码率，迭代次数可变(Protocol standard based on 802.16e LDPC code encoding and decoding method using C language, bit rate, variable number of iterations)

频谱感知，生成采样频率，进行能量检测，采用matlab算法(Spectrum sensing, generation of sampling frequency, energy detection, using matlab algorithm)