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Design of FIR filters with Prefilter-Equalizer Structure for Narrowband Communication Systems  

Oh Hyukjun (광운대학교 전자통신공학과)
Ahn Heejune (서울산업대학교 제어계측공학과)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.30, no.6C, 2005 , pp. 577-584 More about this Journal
Abstract
Optimal methods for designing multiplierless minimal complexity FIR filters with cascaded prefilter-equalizer structures are proposed for narrowband communication systems. Assuming that an FIR filter consists of a cyclotomic polynomial(CP) prefilter and an interpolated second order polynomial(ISOP) equalizer, in the proposed method the prefilter and equalizer are simultaneously designed using mixed integer linear programming(MILP). The resulting filter is a cascaded filter with minimal complexity. Design examples demonstrate that the proposed methods produce a more computationally efficient cascaded prefilter-equalizer than other existing filters.
Keywords
Digital filter; Narrowband communication; FIR; Cyclotomic polynomial; Prefilter; Equalizer; Interpolated second order polynomial;
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