摘要
DOQPSK调制性能优于QPSK调制,先介绍了DOQPSK的调制原理,重点对传统的正交调制方式和选相调制两种调制方式进行了比较,包括实现的难易程度和在解调端的载波恢复性能。最后基于SIMULINK仿真的结果,采用了更适合用FPGA实现DOQPSK的调制方案。
The modulation performance of DOQPSK is better than that of QPSK. This paper introduces the modulation principle of DOQPSK, and compares emphatically the phase - selected modulating method with traditional orthogonal modulating method, including the difficult extent of circuit realization and the performance of cartier wave recovery on demodulating end. Finally based on the simulation result of SIMULINK, the modulation scheme of DOQPSK, more suitable to circuit realization on FPGA chip, is presented in this paper.
出处
《信息技术》
2006年第6期19-22,共4页
Information Technology
关键词
DOQPSK
差分编码
载波恢复
调制器
DOQPSK
differential encoding
carrier wave recovery
modulator
