对软件无线电中调制模式识别的改进

在非合作通信体制下，通信信号的调制样式识别已经越来越占据重要作用。本文主要从理论上讨论了软件无线电中基带数字信号处理中的一些软件设计，包括信号调制模式的识别、正交解调及其选择解调模式时的控制过程，并着重讨论了在低信噪比情况下数字通信信号的调制模式的识别问题。所有这些过程部是基于可编程芯片用软件实现的。

Improving Classification of Signal Modulation in SoftwareDefined Radio

The importance of the classification of signal modulation is more and more appearance under the uncooperative communication systems. This paper discussed some software designs of the basicband digital signal processing in the Software Defined Radio,which include the automatic identification of the signals modulation types, orthogonal demodulation,and the control procedure when the system choose the demodulation type according to the identification, especially the automatic identification of the signals modulation types under the low SNR. All the procedures above is realized based on the programmable chirps.