QUESTION $39$

Select the correct statement$($s$)$ regarding spread spectrum technologies.

a$.$ both direct sequence spread spectrum $($DSSS$)$ and frequency hopping spread

spectrum $($FHSS$)$ results in the signal being spread over a wider frequency bandwidth

b$.$ both direct sequence spread spectrum $($DSSS$)$ and frequency hopping spread

spectrum $($FHSS$)$ requires a pseudorandom noise $($PN$)$ code and pseudorandom hop

sequence, respectively, to be shared between transmitter and receiver

c$.$ the transmit power requirements using DSSS and FHSS are the same as a narrow

band transmission, even though DSSS and FHSS spreads the signal across a wider

frequency spectrum

d$.$ all statements are correct