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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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GMSK是高斯滤波的最小频移键控的简称,基本的工作原理是将基带信号先经过高斯滤波器成形,再进行最小频移键控(MSK)调制。由于成形后的高斯脉冲包络无陡峭边沿,亦无拐点,因此频谱特性优于MSK信号的频谱特性。-GMSK Gaussian filter is the smallest FSK abbreviation, the basic working principle is to base-band signal to pass Gaussian filter shape, and then
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Ita Fsk Modulation Matlab Coding.
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设计一个2FSK数字调制系统,要求:
(1)设计出规定的数字通信系统的结构;
(2)根据通信原理,设计出各个模块的参数(例如码速率,滤波器的截止
频率等);
(3)用Matlab或SystemView 实现该数字通信系统;
(4)观察仿真并进行波形分析;
(5)系统的性能评价。
-Design a digital modulation system 2FSK require: (1) design a digital communication system
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simulink的数字调制解调仿真。以simulink为基础平台,对2ASK、2FSK、2PSK信号的仿真-Digital modulation and demodulation simulink simulation. The simulink-based platform, 2ASK, 2FSK, 2PSK Signal Simulation
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基于MATLAB的FSK调制,是基于matlab环境下对信号的调制与解调和误码率的分析-MATLAB-based FSK modulation is based on the matlab environment on the signal modulation and demodulation and bit error rate analysis
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用MATLAB来仿真FSK、PSK、DPSK的调制、解调过程,并通过实验来比较它们的误码率和信噪比的关系。内附有matlab源代码-Using MATLAB to simulate FSK, PSK, DPSK modulation, the demodulation process, and to compare their bit error rate and signal to noise ratio by the empirical relationship. Enclosed is t
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2FSK的调制与解调代码,不用matlab里面的函数,自己写出来的仿真程序,加了噪声和滤波器。仅供学习交流。-2FSK modulation and demodulation code, without the function of the inside of the MATLAB, write out the simulation program, plus the noise and filter. Only for learning exchange.
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2FSK 调制 解调 系统 是基带信号调制方式的一种 数字频率调制又称频移键控(FSK——Frequency Shift Keying),二进制频移键控记作2FSK.数字频移键控是用载波的频率来传送数字消息,即用所传送的数字消息控制载波的频率。本文是通过2PSK调制后的信号进行分析通过matlab实现(2FSK modulation and demodulation system is a digital frequency modulation, also known as
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