基于DSP Builder的MSK调制器的优化设计  

Optimized Design of MSK modulator based on DSP Builder

作　　者：王敬[1] 黄锐敏[1] 程梦璋[1] 

机构地区：[1]华侨大学信息科学与工程学院,福建厦门361021

出　　处：《通信技术》2012年第12期4-6,共3页Communications Technology

摘　　要：先是对最小移频键控(MSK)和直接频率合成(DDS)的基本原理进行了理论分析;然后,介绍了基于DDS的MSK调制方法,在此基础上对MSK调制器模型中的查找表(LUT)进行压了缩优化设计,节约了资源并降低了成本开销;最后,在Matlab/Simuilnk平台上结合Altera公司提供的DSP Builder工具对该设计进行建模、仿真,成功验证了该设计的可行性并下载到FPGA芯片进行了硬件实现。This paper describes first the basic principle of MSK （Minimum Shift Keying） and DDS （direct frequency synthesis）, and based on this, proposes an improved design of MSK-modulator, which is realized by means of DDS, and uses less ROM space than the conventional structure by a three-quarter for the sinusoid-wave LUT （look up table）. The design is carried out with Altera DSP Builder tool and in Matlab/Simuilnk environment. The simulation successfully verifies the feasibility of the proposed design scheme, and it is unloaded on Altera FPGA chip for hardware implementation.

关 键 词：最小移频键控 直接频率合成 查找表 现场可编程阵列 

分 类 号：TN911.3[电子电信—通信与信息系统]