Performance Improvements by the Consideration of the Signal Band in the Design of the Linear-phase Inverse-Sinc Filter 


Vol. 27,  No. 11, pp. 1126-1134, Nov.  2002


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  Abstract

An inverse-sinc filter is necessary in order to compensate the sinc function distortion in the frequency response due to the D/A converter. It is investigated to design linear-phase inverse-sinc FIR filters for the compensation which are suitable when the signals are in the bandpass type. The Parks-McClellan algorithm has been used for the design of the filter coefficients. During the process of filter design, only the signal band is assigned larger weighting value, so that the compensation performance of the filter should be maximized. By taking into account the signal band, the performance improvements has been shown to be noticeable. And it has been found that the better performance is obtained as the signal bandwidth gets narrower, and that in some cases the amount of the performance improvement can be as much as that by increasing the filter order. The proposed design method has been applied to the design of the HomePNA 2.0 modem. With a designed inverse-sinc filter of order 4, the compensation error has been shown to be within the range of ±0.01dB.

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  Cite this article

[IEEE Style]

J. Baek, H. Kang, J. Kim, "Performance Improvements by the Consideration of the Signal Band in the Design of the Linear-phase Inverse-Sinc Filter," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 11, pp. 1126-1134, 2002. DOI: .

[ACM Style]

Jein Baek, Hun-sik Kang, and Jong-Won Kim. 2002. Performance Improvements by the Consideration of the Signal Band in the Design of the Linear-phase Inverse-Sinc Filter. The Journal of Korean Institute of Communications and Information Sciences, 27, 11, (2002), 1126-1134. DOI: .

[KICS Style]

Jein Baek, Hun-sik Kang, Jong-Won Kim, "Performance Improvements by the Consideration of the Signal Band in the Design of the Linear-phase Inverse-Sinc Filter," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 11, pp. 1126-1134, 11. 2002.