guest_1044
Newbie level 2
matlab decimation
My IF is 5Mhz.
I need to reduce my sampling frequency 409.8Mhz to 20.48 Mhz by using FIR lowpass filter, so i am decimating it in 2 stages , first time i am using cic filter and decimation factor 5 then i will get the new sampling frequency 81.9 which is given to half band filter by decimating factor 4 then we will obtain finally 20.48 Mhz.
i also would like to know which filter will be best suitable for this for decimation... if i am wrong in selecting the filers ..
parameters ; passband is 0.1dB, stop band is 30dB, passband frequency 10Mhz, Stop band 15Mhz.
i need matlab code for this and if possible vhdl code 2...
it will be great help for me ....
waiting for reply,
you can send to my email id guest_1044@gmail.com
My IF is 5Mhz.
I need to reduce my sampling frequency 409.8Mhz to 20.48 Mhz by using FIR lowpass filter, so i am decimating it in 2 stages , first time i am using cic filter and decimation factor 5 then i will get the new sampling frequency 81.9 which is given to half band filter by decimating factor 4 then we will obtain finally 20.48 Mhz.
i also would like to know which filter will be best suitable for this for decimation... if i am wrong in selecting the filers ..
parameters ; passband is 0.1dB, stop band is 30dB, passband frequency 10Mhz, Stop band 15Mhz.
i need matlab code for this and if possible vhdl code 2...
it will be great help for me ....
waiting for reply,
you can send to my email id guest_1044@gmail.com