Joint use of time-domain and windowed method for design of modulated DFT filter banks  

作　　者：ZHUANG Ling JI Xiang SHAO Kai WANG Guang-yu 

机构地区：[1]Chongqing Key Laboratory of Mobile Communications Technology, Chongqing University of Posts and Telecommunications

出　　处：《The Journal of China Universities of Posts and Telecommunications》2013年第5期91-96,共6页中国邮电高校学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (61071195);the Sino-Finland Cooperation Project (1018);the Chongqing Educate Commission Project (KJ100501)

摘　　要：A novel and efficient technique to design modulated discrete Fourier transform （DFT） filter banks is introduced in this paper. The proposed method first relaxes the limits that the synthesis filters are the time-reversed version of the analysis filters and then adopts the time domain formula of the perfect reconstruction property as the solution to design the synthesis filters. The prototype filter in analysis filter banks is designed based on Fourier-Kaiser window approach. Simulation results show that the designed filter banks approximately satisfy the perfect reconstruction with controllable reconstruction errors.A novel and efficient technique to design modulated discrete Fourier transform （DFT） filter banks is introduced in this paper. The proposed method first relaxes the limits that the synthesis filters are the time-reversed version of the analysis filters and then adopts the time domain formula of the perfect reconstruction property as the solution to design the synthesis filters. The prototype filter in analysis filter banks is designed based on Fourier-Kaiser window approach. Simulation results show that the designed filter banks approximately satisfy the perfect reconstruction with controllable reconstruction errors.

关 键 词：time-domain formula DFT filter banks prototype filter design filter banks design 

分 类 号：TN713[电子电信—电路与系统] O641.4[理学—物理化学]