BPSK AWGN Channel block question

[rhearty1]

I'm curious to know why a dedicated reset port was included in this block, when on most other blocks 'reset' is an optional port. Is reset necessary for reliable operation of this block? Thanks in advance.

[rhearty1]

p.s. This question should have been about the White Gaussian Noise Generator block, since the reset port of the BPSK AWGN block just goes directly to the reset port of the WGN Generator block.

[gszakacs]

Since no one else answered, I'll give my best guess:

If the noise generator uses a pseudo-random number generator, being able to reset it

allows you to have repeatable results - i.e. after each reset the "noise" would have the

exact same sequence of values.  This in turn allows you to make changes to the rest

of your system and compare the results knowing that each run has the exact same

stimulus.

That would say why a reset is useful, but I have no idea why it might be obligatory...

-- Gabor