.TL
com systems
.AU
Lucas Standen
.AI
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QMC
.2C
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work
.LP
1)a)i) noise is additional signal, applied to the top of the input. distortion is where the signal itself is modifided.
1)a)ii) 
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{SNR sub db} = 10 log ( {p sub s over p sub n} )
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20 = 10 log({ p sub s over {0.1 times 10 sup -3}} )
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2 = log({ p sub s over {0.1 times 10 sup -3}} )
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10 sup 2 = p sub s over {0.1 times 10 sup -3}
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10 sup 2 times {0.1 times 10 sup -3} = p sub s 
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{p sub s} = 10mW
.EN

1)c)