多频幅度调制已调信号的构建与仿真

Construction and Simulation for Multitone Modulation Amplitude Modulation Signal

相关文献对各种单频幅度调制已调信号已经作了描绘仿真,但是对于多频幅度调制已调信号的描述,由于计算量巨大,准确描绘仿真困难,现文献中未见介绍。文章利用方波信号的有限项构建多频调制信号,对模拟幅度调制的几种形式进行了数学描述,用MATLAB实现了信号仿真,将单频幅度调制信号描绘扩展到多频幅度调制信号的构建与仿真,得到了预期结果。

Many researchers have performed simulation of single tone AM signal. However, the accurate simulation of multitone modulation signal is difficult due to large computational cost and is not performed by previous researchers. The multitone modulation signals is constructed with the finite terms of square waves, and the mathmatical expression for several kinds of analog amplitude modulation（AM） signals is described and simulated withMATLAB. And the description for single tone AM signals is generalized to multitone AM signals, the expected results are thus obtained.