%0 Journal Article
%T Dynamic Channelization Based on Nonuniform Filterbanks<br>基于非均匀滤波器组的动态信道化滤波
%A Li Bing
%A Zheng Jin
%A Ge Lin-dong
%A <br>李冰
%A 郑瑾
%A 葛临东
%J 电子与信息学报
%D 2007
%I 
%X Based on the fact that there exist several subband signals in the received bandwidth,whose number, band location and bandwidth are time-variant,this paper presents an efficient method of dynamic channelization based on nonuniform filterbanks.The number of subchannels of the uniform filterbank is firstly determined by the given minimal guard bandwidth,and then a corresponding cosine-based filterbank is designed.A nonuniform matrix is derived in terms of band location of every subband signal,and then a nonuniform filterbank can be constructed through directly merging the adjacent subchannels of the uniform filterbank according to the nonuniform matrix.When subband signals dynamically change,channelization can be implemented as long as updating the nonuniform matrix in terms of band location of new subband signal.The computational complexity of implementation architecture can be reduced by the use of relationships between decimation factors of different subband signals.Computer simulations illustrate new method validity.
%K Nonuniform filterbanks
%K Multirate signal processing
%K Polyphase decomposition
%K Channelization<br>非均匀滤波器组
%K 多抽样率信号处理
%K 多相分解
%K 信道化
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=3A3B6EBA50BEC1A2D862CDAFCBA131CC&yid=A732AF04DDA03BB3&vid=771469D9D58C34FF&iid=F3090AE9B60B7ED1&sid=8E5D38B0ECA7D3DD&eid=55161FEDEF8BABB8&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=1&reference_num=11