摘要
提出了一种新颖的数字信号处理算法，对ＱＰＳＫ信号的相位进行数字化处理，从而实现对ＱＰＳＫ信号的解调，文中还对这种算法的噪声性能进行了分析。该算法允许收发两端载波存在频差，无需用锁相实现收发端载波的同步，该算法的计算机模拟结果表明，它是一种有应用前景的新方法。
In this paper, a new algorithm of digital signal processing for QPSKdemodulation is proposed,This algorithm directly processes the phase of thereceived signal, thus realizing the demodulation of the QPSK。 In contrast toother known methods it allows it allows free-running carrier oscillators. The analysis ofthe noise property of the algorithm is also presented. The computer simulationresults indicate that the algorithm is a new method with a bright future forapplication.
出处
《应用科学学报》
CAS
CSCD
1994年第4期409-415,共7页
Journal of Applied Sciences
关键词
数字通信
数字信号处理
QPSK信号
数字解调算法
digital communication, digital signal processing, carrier synchronization, kalman filter, quadrature demodulation .
