Output of PN sequence?

sadsorry · Mar 12, 2013

Hi guys!
I generate PN code

Code:

h=commsrc.pn('GenPoly',gfprimdf(4),'InitialStates',[0 0 0 1],'CurrentStates',[0 0 0 1],'Mask',[0 0 0 1],'NumBitsOut',1);

but I don't know what is output of h. Is it CurrentStates or something else? I want to implement PN code for FHSS so I really want to know it.
Thanks

thylacine1975 · Mar 12, 2013

h is a PRN "object", containing all the parameters required to generate your code sequence.
To make it do something useful, you use the generate() function, i.e.

outputBit = generate(h)

Since you've set the 'NumBitsOut' field to 1, every time you call generate(h), you'll get another (single) bit of your code. In the 4-bit case you've shown, your code will repeat every 2^N-1 = 15 generated bits.
If you're impatient, set NumBitsOut to 15 and generate(h) will give you your whole code in one go

sadsorry · Mar 12, 2013

Ah. It's you again. Thanks for you comment. Last time I find the way to recover BPSK signal and I want to say "THANKS".

Output of PN sequence?

sadsorry

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thylacine1975

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sadsorry

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Output of PN sequence?

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