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pn sequence generator?

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alex2007

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pn sequence generator

I am trying to do pn sequence generator to remove the spur for phase dithering in Matlab simulink.

I can generate the specific system noise level by using pn sequence simulink model. But this does not reduce the spur due to phase dithering and this system noise level is quite high.

Q1) how to adjust the parameter of pn sequence generator simulink model to reduce the system noise level?

Q2) why this does not reduce the spur level?

Q3) Is the max length tap sequence used in pn sequence simulink model same as that of LFSR such as xilinx LFSR application note?
 

circuit diagram of pn sequence generator

You can generate PN sequence by using shift registers, see the diagram:

94_1168421604.jpg


where h can be either 1 (short circuit) or 0 (open circuit)
and x's are the shift registers...


if helps, press helped me
 

pn sequence generator circuit

the code of a pn sequence is simply apolynomial,
79_1168441584.JPG

see this table:
37_1168441444.JPG


so the code is very simple...
 
matlab coad for pn sequence generation

Hi Enhancer,

Thanx for ur reply. My question is not very clear first. So I metion the questions more specifically.
 

pn sequence table

Does anyone have the MATLAB code for this generator?
 

Does anyone have the MATLAB code for this generator?
 

Re: pn sequence generator circuit

Enhancer said:
the code of a pn sequence is simply apolynomial,
79_1168441584.JPG

see this table:
37_1168441444.JPG


so the code is very simple...
Click to expand...


please i need to know what is meant by the n-sequence
please help
 

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