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Hello, I work with a FPGA and the output of the FFT IP is in floating point. And I must find the spectrum of the signal. But I don't have adder,multiplior and divider in floating point. IF someone could tell me how to do? Thank you!

No. I forget this solution. I have found another way to resolve the problem and now it working.

In fact I need to calculate a SQRT but this box is too slow so I will put in parrele the samples. It's why I want a demultiplexer 8x 30Bit. Or my be another possibility

I use quartus V4.1 i work with a cyclone

when compiliing there is message error: i use too much I/o pin.

Hello, I begin in VHDL and I try to create a demultiplexor 1 to 8 with a 30bits bus. If someone can help me! this is the code: what must I do? Library IEEE; Use IEEE.std_logic_1164.all; Entity demux is Port( Signal sel: in std_logic_vector(2 downto 0); Signal en: in...

I need to calculate the magnitude of a complex number: sqrt(X²+Y²). Now I think the best is the CORDIC algorithm. But I don't know yet how to implement that in VHDL. I expect find that nearly!

In fact, I use a FFT box to find the spectrum. After I determined the filter of the channel. I need an algorithm to inverse this filter and cancel the interference.

Hello! I work with a FPGA and I must inverse the filter but I don't know how to proceed. I think to use the euclide algoritme but I don't how. If somebody could help me,thank you!

Hello, somebody know how to realized a fonction sqrt in VHDL? Thank you!

I work on a EP20K of Altera and I have some problems with the FFT V1.02 opencore. I don't undersdtand how to use it. If somebody could help me and give me an block diagram it would be great!