chirp-fourier-transform

说明：  基于TOA测量和DOA测量的目标节点定位可以比RSS测量获得更高精度的位置参数(The location of target nodes based on TOA and DOA measurement can obtain higher precision position parameters than RSS measurement)

对当前通信信号中常用的数字调相信号BPSK、QPSK、1／4一QPSK、8PSK的调制识别问题，提出了一种基于信号差分高阶累积量的识剐算法。该算法分两个层次进行调制识别，首先利用信号的四阶累积量特征对BPSK、QPSK和{1／4一QPSK、8PSK}信号进行识别，然后再利用信号差分的四阶和八阶累积量特征对1/4-QPSK、8PSK信号进行识别。从理论上分析了的该算法的有效性，并通过计算机仿真验证了算法具有良好的性能。(A recognition algorithm based on differential high-order cumulant is proposed for the modulation recognition problems of BPSK, QPSK, 1/4-QPSK and 8PSK, which are commonly used in current communication signals. The algorithm is divided into two levels for modulation recognition. Firstly, BPSK, QPSK and {1/4-QPSK, 8PSK} signals are identified by using the fourth-order cumulant characteristics of signals, and then 1/4-QPSK and 8PSK signals are identified by using the fourth-order cumulant and eighth-order cumulant characteristics of signal difference. The validity of the algorithm is analyzed theoretically, and the good performance of the algorithm is verified by computer simulation.)

说明：  基带信号bpsk仿真，基带传输基本方波信号、sinc信号，对过程添加高斯白噪声，接收端用匹配滤波器进行接受，计算实际信号误码率，并于理论误码率进行比较(BPSK simulation of baseband signal. Baseband transmits basic square wave signal and sinc signal. Gaussian white noise is added to the process. Matched filter is used to receive the received signal. The error rate of actual signal is calculated and compared with the theoretical error rate)

说明：  对信号进行EMD分解，将信号可以分为基频和多阶谐频(signal EMD decomposition, the signal can be divided into fundamental frequency and multi-order harmonic frequency)

使用模糊控制的风机系统使用了模糊控制，能够轻松的搭建起相关模型(Wind Turbine System Using Fuzzy Control)

交交变频仿真 余弦交点法 三相零式电路(Cycloconverter in matlab)

生成bsk信号，观察其时域及频域下的波形。(Generating bpsk signal)

说明：  实现turbo码编程，是matlab源程序。(matlab program of turbocoder)

说明：  SC-FDE相位噪声比较(SC-FDE phase noise comparison)

GUI界面设计实现DTMF双音多频电话拨号(GUI design and DTMF source code)