一种新的对称FIR内插滤波器结构及其在WCDMA中的应用
A new structure for symmetric fir interpolator filter and its application in WCDMA
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摘要: 该文提出了一种新的通过构造辅助滤波器组来利用原型滤波器的对称特性的方法,并且提供了一种实用的实现方法,便于在FPGA,DSP或现有的商用数字滤波器中实现。这种结构在第三代移动通信系统的开发过程中被用于实现WCDMA中的64阶基带成形滤波器。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.
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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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