Digital Channelization Technology for HF Communication Base on Fast Filter Bank  

作　　者：Yixin Fan Fanglin Gu Xiaobo Tan Ling Wang 

机构地区：[1]College of Electronic and Information Engineering, Hunan University [2]College of Electronic Science, National University of Defense Technology [3]Model Office in Aerospace Industry Group Corporation,PLA Rocket Force

出　　处：《China Communications》2018年第9期35-45,共11页中国通信（英文版）

基　　金：supported in part by the National Natural Science Foundation of China under Grant 61601477, and 61601480

摘　　要：Channelization typically realized by digital filter banks is an important topic in high frequency(HF) communication and software defined radios(SDR) areas. Channelization has a rigorous requirement for the characteristic of frequency response, e.g., steep transitional band and sharp decay. To address this issue, we investigated the feasibility and implementation of applying fast filter bank(FFB) in channelization in this paper. We analyzed the butterfly structure of FFB similar with fast Fourier transform(FFT), in which prototype sub-filters are cascaded to achieve a low complexity. Hence, it is suitable for designing filter bank with steep transitional band and sharp decay in stop-band. Moreover, we designed a pipelined structure of FFB to achieve a balance between area and performance. Design example shows that FFB has lower computational complexity compared with the other filter banks.Channelization typically realized by digital filter banks is an important topic in high frequency（HF） communication and software defined radios（SDR） areas. Channelization has a rigorous requirement for the characteristic of frequency response, e.g., steep transitional band and sharp decay. To address this issue, we investigated the feasibility and implementation of applying fast filter bank（FFB） in channelization in this paper. We analyzed the butterfly structure of FFB similar with fast Fourier transform（FFT）, in which prototype sub-filters are cascaded to achieve a low complexity. Hence, it is suitable for designing filter bank with steep transitional band and sharp decay in stop-band. Moreover, we designed a pipelined structure of FFB to achieve a balance between area and performance. Design example shows that FFB has lower computational complexity compared with the other filter banks.

关 键 词：fast filter bank （FFB） high frequency （HF） CHANNELIZATION software defined radio （SDR） 

分 类 号：TN925[电子电信—通信与信息系统]