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how to write verilog code for QPSK modulation?

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firephenix405

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qpsk modulation

who has some sources for it? Please tell me. If anyone has certain source codes about it, I'll appreciate your help if you can share it with me.
 

verilog code for qpsk modulator

Coding such complex modulations in vhdl or verilog is not that easy. You can instead try Matlab-based System Generator. Some examples are already available....See Mathworks Site.
Regards
 
qpsk code

to build qpsk use divide and conquer divide the system into:
1-serial to parallel converter
2-mapper: map every 2 bits to corresponding i,q
3- sin,cos oscillator
4- multiplier
5- adder

not that hard
 
verilog coding of qpsk demodulator

Hi "THUNDERRr",
Have you done QPSK demodulation?....I'm finding a really tough time in demodulating,especially in recovering the shifting. Could you provide any better idea of recovering data..?
Thanks in advance..
 
qpsk demodulator using verilog code

i implemented the demodulation using tan-1 function
i have to branches one for sin and other for cos taking tan-1(sinx/cosx)
can obtain the phase .. then build decision making to determine the obtained phase in which region
 

Re: qpsk demodulator using verilog code

Dear Sir,
I have built QPSK modulator like u said earlier. Now when it comes to demodulation i'm finding it very difficult. The modulated data must go thro low pass filter. I have absolutely no idea how to implement a LPF in verilog. will u plz help me write code for an LPF??:?:
 

Re: qpsk demodulator using verilog code

manubangalore88@gmail.com said:
Dear Sir,
I have built QPSK modulator like u said earlier. Now when it comes to demodulation i'm finding it very difficult. The modulated data must go thro low pass filter. I have absolutely no idea how to implement a LPF in verilog.
Click to expand...
I'm too lazy to learn anything.

will u plz help me write code for an LPF??:?:
Click to expand...
I'm too lazy to do it myself.


Here read this and try to learn more than begging for forum members to do the work for you.
**broken link removed**
 

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