Design and Implementation of Programmable Multi Stage Decimation Filter For Wireless Communication Receivers

الملخص

This paper presents, the design of programmable multi stage decimation filter for wireless communication receivers using MATALB program in the intermediate frequency band up to 150 MHz which will serve the CDMA, WCDM and GSM systems. However, this paper will deal with the designing and investigation of decimation filter in terms of the filter performance in pass band, stop band and adjacent band rejections of the filter. The multi stage decimator produce low computational complexity and error. In addition, relaxation in the specifications of anti aliasing filter in each stage compared to single stage realization. The results obtained shows an important improvements in the filter response compared with conventional design. The proposed decimation filter will enhance the 3G and 4G of communication systems.