一种FSK反正切差分解调方法  

Arctan Differentiated Demodulator Method of FSK

作　　者：何维[1] 张超[1] 

机构地区：[1]重庆邮电大学移动通信技术重庆市重点实验室,重庆400065

出　　处：《电视技术》2015年第9期108-112,共5页Video Engineering

基　　金：国家重大科学仪器设备开发专项(2012YQ20022404);重庆市教委科学技术研究项目(KJ130537)

摘　　要：针对频移键控在通信系统应用中其调制解调技术在一定程度上直接影响通信系统的性能,提出了一种FSK数字解调方法,称作反正切差分解调。该方法基于正交反正切算法,正交信号直接相除消除了幅度调制成分。新的方法适用于窄带和宽带的FSK信号并适合于数字接收机。仿真结果表明,该技术能有效解调FSK信号,并适合于多种制式的FSK信号。The demodulation technology of FSK signal can directly impact on the perfornmnce of communication system in a certain degree. In this paper, a FSK digital demodulator is proposed,called arctan differentiated demodulator. The demodulator is based on quadrature arctan algorithm. Direct division of quadrahu＇e signals rejects amplitude modulation components. The proposed demodulator works for both narrow ＆ wide band FSK signals,and it is suitable for digital receivers. The sinmlation resuhs show that the technology can better demodulate FSK signal, and it is suitable tor many formats of FSK signal.

关 键 词：频移键控 数字解调 反正切解调 反正切差分解调 

分 类 号：TN911.72[电子电信—通信与信息系统]