基于差分检波的数字化快速解调算法  

Algorithm for Fast Digital Demodulation Based on the Difference Detection

作　　者：黄红兵[1] 曹敦[1] 胡双红[1] 

机构地区：[1]长沙理工大学计算机与通信工程学院,湖南长沙410076

出　　处：《通信技术》2007年第12期95-96,共2页Communications Technology

基　　金：湖南省教育厅科研基金资助项目(No.06C115)

摘　　要：在通用的硬件平台上,采用不同的软件算法来实现不同调制与解调是软件无线电的核心思想。文中根据模拟通信系统中的差分检波原理,提出了一种软件无线电中FSK信号解调的快速算法,理论分析和仿真结果都证实了该算法的有效性,与数字化正交解调算法相比,省去了本地载波恢复,简单、计算量小且易于实现,具有理论意义和实际应用价值。Using different algorithms to modulate and demodulate different signals on common hardware platform is the core idea of software radio （SR）. Based on the differenctial detection principle of analog communication system, this paper proposes an algorithm for fast demodulation of FSK signals in SR. Theoretical analysis and simulation results have show the efficiency of this algorithm. By contrast with digital quadrature demodulation algorithm, it doesn＇t need to resume local carrier, and it is simple, easier for realization and with less computation. The algorithm is of theoretical significance and practical value.

关 键 词：软件无线电 数字化解调 移频键控 

分 类 号：TN911[电子电信—通信与信息系统]