摘要
提出了一种基于反相对称调制(PISM)法的PIS-QPSK调制解调系统模型。该模型采用匹配滤波器进行接收,在QPSK的同相和正交支路上分别进行PISM调制解调。文中阐明了该系统的工作原理,并对其抗噪声性能进行了理论分析和仿真实验,得出PIS-QPSK系统具有抗强特定噪声的结论。
This paper gave a PIS-QPSK modem system model based on Phase-Inversion Symmetric Modulation （PISM）. The model receives by matching filter and performs PISM in cophase branch and orthogonal branch. After illuminating the model＇ s operating principle, the paper made a mathematics analysis and emulation experiment on the system＇s antinoise performance. At last, a result that PIS-QPSK has superiority under the specific noise＇s condition was made.
出处
《信息技术》
2007年第12期147-150,154,共5页
Information Technology
关键词
反相对称调制
QPSK
匹配滤波
抗噪声性能
phase-inversion symmetric modulation
QPSK
matching filtering
anti-noise performance
