Question

Cuatro bits son transmitidos sobre un canal de comunicaciones digital. Cada bit puede estar distorsionado o...

Cuatro bits son transmitidos sobre un canal de comunicaciones digital. Cada bit puede estar distorsionado o recibirse sin distorsión. Deja que ?? denote el evento donde el bit número i esta distorsionado para i = 1,…,4. a) Describe el espacio muestral para este experimento b) ¿Son las ?? mutuamente excluyentes? Describe los resultados de cada uno de los siguientes eventos: c) ?1 d) ?1‘ e) ?1Π?2Π?3Π?4 f) (?1Π?2) U (?3Π?4)

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Answer #1

a)

E - error

N -No error

sample space
{EEEE, EEEN,EENE, EENN , ENEE, ENEN,ENNE, ENNN,
NEEE, NEEN,NENE, NENN , NNEE, NNEN,NNNE, NNNN }

b)

No, they are not mutually exclusive

c)

A1 - bit 1 is distorted

d)

A1' - bit 1 is received without distortion

e)

?1Π?2Π?3Π?4 - all four bits are received with distortion

f)

(?1Π?2) U (?3Π?4)- either first and second bits are distorted or third and fourth are distorted

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