一種新的對稱FIR內(nèi)插濾波器結(jié)構(gòu)及其在WCDMA中的應(yīng)用
A new structure for symmetric fir interpolator filter and its application in WCDMA
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摘要: 該文提出了一種新的通過構(gòu)造輔助濾波器組來利用原型濾波器的對稱特性的方法,并且提供了一種實用的實現(xiàn)方法,便于在FPGA,DSP或現(xiàn)有的商用數(shù)字濾波器中實現(xiàn)。這種結(jié)構(gòu)在第三代移動通信系統(tǒng)的開發(fā)過程中被用于實現(xiàn)WCDMA中的64階基帶成形濾波器。
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關(guān)鍵詞:
- 內(nèi)插濾波器; 對稱; 有限沖激響應(yīng); WCDMA
Abstract: This paper proposes a new method to exploit the symmetric structure of prototype filters and provides a practical implementation structure which can be used in FPGAs, DSPs or commercial available digital filters. In the development of WCDMA mobile communication systems, this method is proposed to implement 64-order baseband shaping filter. -
L.R. Rabiner, R. E. Cronchiere, Interpolation and decimation of digital signals A tutorial review, Proc. IEEE, 1981, 69(3), 300-331.[2]R.E. Cronchiere, L. R. Rabiner, Multirate Digital Signal Processing, Englewood Cliffs. NJ,Prentice-Hall, Inc., 1983,[3]MNarasimha, A. M. Peterson, On using the symmetry of FIR filters for digital interpolation.IEEE Trans. On ASSP, 1978, 22(3), 267-268.[4]P.P. Vaidyanathan, Multirate digital filters, filter banks, polyphase networks and applications.Proc. IEEE, 1990, 78(1), 56-93.[5]Intersil Corporation, HSP43168 Data Sheet, Feb. 1999. -
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