Design of CIC roll-off compensation filter in a W-CDMA digital IF receiver
Digital Signal Processing
Application of filter sharpening to cascaded integrator-combdecimation filters
IEEE Transactions on Signal Processing
Sample rate conversion for software radio
IEEE Communications Magazine
An economical class of droop-compensated generalized comb filters: analysis and design
IEEE Transactions on Circuits and Systems II: Express Briefs
A novel optimization based method for separation of periodic signals
Digital Signal Processing
A novel two-stage nonrecursive architecture for the design of generalized comb filters
Digital Signal Processing
An improved wideband CIC filter design of software radio receivers
International Journal of Wireless and Mobile Computing
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This paper presents the multiplierless CIC compensation filter based on the 2M-order filter and the sharpening technique. This technique proposed by Kaiser and Hamming attempts to improve the pass band and the stop band of a symmetric nonrecursive filter using the multiple copies of the same filter. We have considered the simplest sharpening polynomial that improves the frequency characteristic with minimum increase in computational complexity. The proposed filter provides wideband compensation over the specified CIC main lobe bandwidth. The design parameter is a single integer b which depends on K, the number of cascade CIC stages and is independent on the decimation factor M. The values of b tabulated here were obtained from MATLAB simulations. A number of demonstrated characteristics make the proposed structure a good candidate for software defined radio (SDR) applications.