2ASK数字调制系统的建模与仿真作者:侯烨 李白萍 卢玮来源:《电脑知识与技术》湿婆之舞
金华职业技术学院图书馆2016年第28期 摘要:2ASK信号的调制解调在数字调制技术中占有重要地位。文中使用Simulink加里曼丹实现了高斯白噪声条件下2ASK调制系统的建模与仿真。该系统可以灵活的同时实现两种解调方式,并得到波形、误码率等关键数据。仿真结果表明,噪声方差的减小可以提高系统信噪比,相干解调方式的抗噪性能优于非相干解调方式。 煤矸石砖
关键词:2ASK;运冰模型;误码率;调制;解调;Simulink
cnn中图分类号: TN 914.3 文献标志码:A 文章编号:1009-3044(2016)龚曲此里28-0236-03
Abstract: The modulation and demodulation of 2ASK signal plays an important role in digital modulation technology. In this paper, the modeling and Simulation of 2ASK modulation system is realized under the condition of Gauss white noise by using Simulink. This system can realize two kinds of demodulation methods flexibly, and get the key data
such as waveform, bit error rate and so on. The simulation results show that the reduction of noise variance can improve the signal-to-noise ratio of the system, and the anti noise performance of the coherent demodulation method is better than the non coherent demodulation method.