How to verify a design of digital filter?

[qjlsy]

From the point of functional verification, how to verify a design of digital filter?

How to evaluate the performance of this digital filter(implemented in rtl code)?

Could anybody give me some help? Thanks a lot!

 

[tony_taoyh]

I think it is best to use FPGA to implement it;
and use the signal generator and spectra analyzer to check the performance.

For the simulation, you just check the function is correct; it is very difficult to check the performance.

Maybe this help you.

 

[cnspy]

I think you can find some comparable modules, such as C/MATLAB or some others, as the reference.

Do you think RTL performance information is useful for you?

 

[Renjith]

Filter design can be made simple with the use of SystemGenerator tool under simulink
it has got a Filter Design Tool box, u can check ur filter performance in the simulink window, and finally after achieving the required performance, u can generate the RTL codes using the same tool.Then u can do the functional simulation using Modelsim.

 

[qjlsy]

Thanks for your help first. Then,

I jsut used C for a reference model. Here I try to design a LPF. I mixed 1.5M and 10M as input. The LPF pass band is set to 1.5M.

I can see the freq. of the output is less than that of the input, but not equal to 1.5M low-freq input.

Is this result right? How to verify the detail performance requirement?

Could anybody give me more help? Thanks a lot!

Added after 2 hours 11 minutes:

I got it. My C model implements low pass filtering to the required low freq..

Thanks a lot!