连续相位QAM调制技术及其FPGA实现  

Phase continuous QAM modulation and its FPGA realization

作　　者：柯炜[1] 殷奎喜[1] 王婷婷[2] 

机构地区：[1]南京师范大学物理科学与技术学院,江苏南京210097 [2]南京信息工程大学电子与信息工程学院,江苏南京210097

出　　处：《电路与系统学报》2008年第2期117-121,共5页Journal of Circuits and Systems

摘　　要：本文详细介绍了一种新型QAM调制方法,该方法将QAM调制中的相位跳变改为连续变化。仿真实验表明,与普通的QAM调制相比,高次谐波分量大幅下降,同时误码率性能几乎不受影响,可以有效地提高频谱利用率。以FPGA器件为核心设计的连续相位QAM调制器,将绝大部分功能模块由大规模FPGA内部资源来实现,调制器中采用了双通道设计,成功实现了过渡区相位与主要区间相位的交替产生。We introduce a kind of new QAM modulation which makes phase switch into phase continuous change . The computer simulations demonstrate phase continuous QAM can successfully raise frequency using ratio. The majority of function in modulator are realized by FPGA resource, which can enhance the system＇s reliability, and reduce its size. Because of the particular phase transformation in phase-continuous QAM, double-channel design is successfully applied to coming into being transition-phase and main-phase alternately.

关 键 词：连续相位 QAM调制 频谱利用率 FPGA 

分 类 号：TN76[电子电信—电路与系统]