A fifth order comb decimation filter with programmable decimation ratios and sampling rates for GSM (Global System for Mobile communications) and DECT (Digital Enhanced Cordless Telecommunication) standards are presented in [1].Multiplier –free cascaded Integrator Comb

In this work, we propose a decimator filter able to deal with GSM, WCDMA, WLAN 802.11(a/b/g) and WiMAX By taking into account the operating frequency, bandwidth and intermodulation effects, an appropriate input sampling frequency is selected. Meanwhile, with the parameters of blocking and interference profile, Passband limits and Passband ripple, for all this radio communication standard, we are designing decimation filter design tool in Matlab using ―GUIDE ―environment for visual analysis. so, user can select required wireless standard among this standard and obtain corresponding multistage decimation filter design and analysis. Through the analysis of the frequency responses we can see how the filter selects signal channels for multimode communication. The decimation filter design toolbox helps the user or design engineer to perform a quick design and analysis of decimation filter for multiple standards without doing extensive calculation. Keywords—Decimation filter, MATLAB toolbox, Multistandard Receiver, Sigma-delta A/D converter.