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现有数字信号自动调制识别方法大多只适用于无记忆信号，如PSK、ASK、FSK信号等。将有记忆
信号(MSK信号)和无记忆信号一起考虑，提出了一种改进的数字信号自动识别方法。该方法采用信号的瞬时统
计量作为特征参数，采用多层神经网络作为分类器。计算机仿真表明：当噪声采用高斯白噪声，并且信噪比大于
l5 dB时，识别率高于96％ ；当信噪比不低于l0 dB时，识别率不低于90％。,Existing digital signal automatic modulation recognition
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An 8-QAM communications channel simulation in Simulink, constructed from a 16-QAM model and using an I,Q correlation receiver.
QAM (quadrature amplitude modulation) is a method of combining two amplitude-modulated (AM) signals into a single chan
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communication system is expected to increase the service, the quality improvement and also the capacity, using spread spectrum communication system is one of the method to fulfill that demand. This quality and capacity factor will depend on the numb
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Design of the differential code shift keying ( 2DPSK ) modulation and demodulation system work flow diagram, and the use of Matlab software on the system dynamic simulation. By using the simulation results, from the baseband signal waveform can be me
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Orthogonal frequency division multiplexing (OFDM) is becoming the chosen
modulation technique for wireless communications. OFDM can provide large data
rates with sufficient robustness to radio channel impairments. Many research centers
in the w
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介绍了数字通信中的QPSK调制解调的原理，通过用Matlab编写脚本程序对QPSK通信系统的发射和接收过程的具体实现进行模拟仿真，绘出信号在理想信道和加噪信道中模拟传输时的时域图，并对各模块进行了频谱分析，所得到的结果与
理论基本相符，对于理解QPSK系统的性能并在系统的实际应用上作进一步的设计，提供了有效的参考依据。
-The introduction was done with the principle of the QPSK modulation and demodulation
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This article presents a simulation model of Space vector Pulse Width Modulation (SVPWM) Rectifier using
MATLAB/Simulink which ability is to stabilize an output voltage of 500 Vdc a 3 phase 300V system using a
decoupling feed-forward control metho
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对一个2PSK数字通信系统运用MATLAB编程实现2PSK调制解调过程，输出调制解调后的相应波形，讨论其调制和解调效果，并用相关优化函数优化系统性能。-The modulation and demodulation of a 2PSK digital communication system is realized by using MATLAB programming. The corresponding waveforms of the output modulation and demod
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利用matlab针对图像进行马氏距离计算 ,包括调制，解调，信噪比计算，基于人工神经网络的常用数字信号调制。- Using matlab to calculate the Mahalanobis distance for the image, Includes the modulation, demodulation, signal to noise ratio calculation, The commonly used digital signal modulation based on a
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