基于System Generator的GMSK调制器仿真设计  

GMSK Modulator Simulation Design Based on System Generator

作　　者：陈婷[1] 洪伟[1] 郑昱[1] 

机构地区：[1]西安电子工程研究所,西安710100

出　　处：《火控雷达技术》2015年第1期60-64,78,共6页Fire Control Radar Technology

摘　　要：GMSK由于具有优良的频谱效率和功率效率等特性,因而作为一种重要的调制技术被广泛地应用。传统的GMSK调制器需要在硬件中进行高斯滤波和相位积分计算,会出现各种截取误差,并且造成硬件资源浪费。本文是基于System Generator的GMSK正交调制器的仿真设计,采用了一种新的全数字基于相位路径的算法产生正交调制查找表,生成GMSK正交调制信号,该算法降低了计算复杂度与硬件实现难度。As GMSK features excellent spectral efficiency and power efficiency, it is widely used as an important modulation technology. Traditional GMSK modulator requires Gauss filtering and phase integral calculation in hard- ware,which will lead to various truncation errors and cause waste of resources. A simulation method of GMSK quad- rature modulator based on System Generator is designed,the design concept is to form a quadrature modulation look- up table by using a digital algorithm based on phase path,then generate GMSK quadrature modulation signal. The computational complexity and hardware implementation difficulty are both reduced by using this algorithm.

关 键 词：GMSK 相位路径 调制查找表 正交调制器 

分 类 号：TN97[电子电信—信号与信息处理]