摘要
通过对2ASK,2FSK,2PSK和2DPSK数字调制系统的误码率分析,得出在理想情况下相同信噪比时2PSK的误码率最小,2ASK的误码率最大。利用Simulink仿真软件对这4种调制方式进行了仿真,得到不同的调制与不同信噪比的误码率曲线关系图。仿真结果表明,仿真得出的误码率基本上与理论值有所偏差。证明了在实际的通信过程中,调制系统的误码率不仅与信噪比有关,还与调制系统的抽样数有关。
To the same SNR,2PSK has the minimum BER and 2ASK has the largest BER by the BER analysis of 2ASK, 2FSK,2PSK and 2DPSK digital modulation system. These four kinds of modulation Simulink simulation by the Simulink software,different modulation and different signal to noise ratio of the bit error rate curve of the relationship between maps,simulation results show that the BER simulation obtained with the theoretical value is basically biased. It proves that the modulation system BER is not only with the SNR,but also with the samples per symbol of these modulation system,in the actual communication process.
出处
《现代电子技术》
2009年第21期118-120,共3页
Modern Electronics Technique
