decreasing signal power..does it mean.increasing noise power

hi all,
       i am carrying out a small test in where i need to introduce 1
db of noise. Since i don't have any noise generator can i decrease the
input signal by 1 db.Is it equivalent to injecting noise of 1 db?
I am doing the test in awgn channel. Does it also hold good for
multipath channel models?

Thanks
particlereddy

PARTICLEREDDY (STRAYDOG) wrote:
> hi all,
>        i am carrying out a small test in where i need to introduce 1
> db of noise. Since i don't have any noise generator can i decrease the
> input signal by 1 db.Is it equivalent to injecting noise of 1 db?
> I am doing the test in awgn channel. Does it also hold good for
> multipath channel models?
> 
> Thanks
> particlereddy

Pause and consider definition of db.
Pause and consider definition of your test case.