[Discuss-gnuradio] Scrambler Mask, Seed and Lenght

[Thanasis Balafoutis]

Hi,

the default values for the parameters of the scrambler block are the following:

Mask: 0x8A

Seed: 0x7F

length:7

Is this a 7-bit scrambler? If yes, why the mask corresponds to an 8-bit number? (0x8A = '10001010')

What is the polynomial that corresponds to this mask?

According to this link (which I found as reference): http://wiki.spench.net/wiki/GNU_Radio_Notes#GLFSR_Source

the mask 0x8A is related with the polynomial x^8+x^4+x^2+1

Is that correct? Do I miss something or is there an error on default values?

Thank you!