设计一个简易数字信号ASK调制系统。系统数字基带信号V1为m序列伪随机信号，载波信号V2为正弦波周期信号，V3为V1经二进制幅移键控调制后的输出。系统输入为CLOCK和RESET信号，CLOCK是系统时钟信号，上升沿触发。RESET为系统异步复位信号，高有效。(A simple digital signal ASK modulation system is designed. The system digital baseband signal V1 is m sequence pseudo r

针对数字卫星常用的 7 种通信信号调制方式(QPSK、8PSK、16QAM、32QAM、64QAM、16APSK、32APSK)，对零中心归一化瞬时幅度谱密度最大值、四次方谱、幅度、高阶累积量四种特征参数进行了分析，提出了一种联合特征参数的信号调制识别方法．(Aiming at seven communication signal modulation modes commonly used in digital satellite (QPSK, 8PSK, 16QAM, 32QAM, 64QA

Time Frequency Toolbox matlab时频分析工具箱,里面有各种时频分析函数，用matlab实现的，小波变换，Gabor变化，短时傅里叶变换等等(AF Ambiguity function AR Auto-regressive (filter or model) ASK Amplitude shift keyed signal BJD Born-Jordan distribution BPSK Binary phase shift keyed signal BUD