ASK（二进制幅度键控）是一种最简单的数字信号的载波传输，本文通过对数字信号的2ASK调制，解调在不同信噪比的情况下误码率分析，得出不同信噪比下的误码率。

通过对2ASK的仿真更好的理解了数字调制系统的组成以及各模块的功能。

-ASK (binary amplitude shift keying) is a simple digital signal carrier transmission, this paper 2ASK digital signal modulation, demodulation signal to noise ratio in different circumstances BER analysis, have come to different SNR BER. Simulation 2ASK through a better understanding of the digital modulation system, as well as the function of each module.