基于SystemView的4DPSK调制与解调

The Modulation and Demodulation of 4DPSK Based on the SystemView

本文主要研究四进制差分相位键控(4DPSK)技术和其在通信仿真软件SystemView下的仿真方法。4DPSK技术是多进制数字调相系统中经常使用的一种技术,它抗干扰能力强、误码性能好、频谱利用率高,而且,它成功地解决了四进制绝对移相键控(4PSK)在相干解调过程中产生的相位模糊问题,使系统的性能得以提高。

This paper mainly deals with the technology of 4 Phases Difference Shift- Keying （4DPSK） and the method of using the SystemView. 4DPSK is widely applied in M-PSK systems. It ensures a reliable transfer of information and makes great use of the limited frequency. Besides, it has successfully solved the reverse direction working-problem of the demodulation of the 4 Phases Shift-Keying （4PSK） to better the quality of the communication.