摘要
传输带宽对信号传输的带宽效率有着重要的意义。本文讨论了一种较大幅度抑制VWDK调制传输带宽的滤波方法。首先通过设计和使用VWDK整形滤波器大幅度压缩了VWDK已调信号传输带宽;其次接收端使用逆滤波大幅降低了采样频率;最后在逆滤波后选择、使用带通滤波器进一步降低了满足一定解调要求的信噪比。
Transmission bandwidth is very important to bandwidth efficiency of signal transmitting.In this paper,a kind of filtering method that deeply compresses VWDK transmission bandwidth is discussed.Firstly,reshaping filter is designed to depress side lobe of VWDK power spectrum,which brings VWDK transmission bandwidth reduced rapidly.Then,an inverse filter is used in receiving terminal to reduce sampling rate.Finally,a band-pass filter is chosen to add behind the inverse filter,and the Eb/No of certain error bite rate is further cut.
出处
《电路与系统学报》
CSCD
北大核心
2011年第3期50-55,共6页
Journal of Circuits and Systems
基金
江苏省高校自然科学研究计划项目(08KJD510013)
江苏省政府出国留学基金
江苏省青蓝工程项目
南京工程学院科研基金(KXJ07005)
