PRBS scrambler seed

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Hi,

I've designed an scrambler/descrambler 1+x^43

Is it necessary to have the same initial seed in the register at the
scrambler and at the descrambler ?

I have put not the same seed and the descrambler decode the data right
!!!!

Best regards.

 

[Mike]

Hi,

I've designed an scrambler/descrambler 1+x^43

Is it necessary to have the same initial seed in the register at the
scrambler and at the descrambler ?

I have put not the same seed and the descrambler decode the data right
!!!!

Then I guess you've answered your own question, right?

It depends on your scramber/descrambler design. Some require the same seed,
and others don't. The topic has come up here before, within the past year or
two, as I recall. Google through the SED history, and I think you'll find
some examples.

-- Mike --