无线电工程
無線電工程
무선전공정
RADIO ENGINEERING OF CHINA
2014年
9期
32-34,73
,共4页
线性调频信号%分数阶傅里叶变换%扩频通信
線性調頻信號%分數階傅裏葉變換%擴頻通信
선성조빈신호%분수계부리협변환%확빈통신
linear frequency modulation%fractional Fourier transform%spread spectrum communication
线性调频信号（ Chirp）在对应的分数阶傅里叶变换（ Fractional Fourier Transform， Frft）域上具有良好的聚焦性能，据此提出了一种基于Frft的二进制正交键控（ BOK）调制的Chirp信号扩频通信方法。发射端采用BOK-Chirp信号，在接收端采用Frft对Chirp信号进行检测。仿真分析表明，该方法可获得较好的误码率。
線性調頻信號（ Chirp）在對應的分數階傅裏葉變換（ Fractional Fourier Transform， Frft）域上具有良好的聚焦性能，據此提齣瞭一種基于Frft的二進製正交鍵控（ BOK）調製的Chirp信號擴頻通信方法。髮射耑採用BOK-Chirp信號，在接收耑採用Frft對Chirp信號進行檢測。倣真分析錶明，該方法可穫得較好的誤碼率。
선성조빈신호（ Chirp）재대응적분수계부리협변환（ Fractional Fourier Transform， Frft）역상구유량호적취초성능，거차제출료일충기우Frft적이진제정교건공（ BOK）조제적Chirp신호확빈통신방법。발사단채용BOK-Chirp신호，재접수단채용Frft대Chirp신호진행검측。방진분석표명，해방법가획득교호적오마솔。
Chirp signals have the best energy concentration in a special fractional Fourier domain.A BOK-Chirp spread spectrum communication scheme based on fractional Fourier transform ( Frft) is proposed. The Chirp signals are modulated by binary orthogonal keying signals at the transmitting end,and they are detected through Frft at the receiving end.Simulation shows that the scheme has good performance in bit error rate.
