QUESTION 1

Unlike analog communications, digital communications do not involve the use of sinusoidal carriers during the digital modulation process.

True

False

QUESTION 2

Electrical, electromagnetic, and optical symbols are used to represent logical (0s and 1s) data. As such, symbol rate is always equal to data rate, and the two terms can be used interchangeably.

True

False

QUESTION 3

Select the true statement regarding the relationship between data rate (bit rate) and baud rate.

a. data rate is the same as baud rate

b. data rate is not dependent upon M (i.e., number of values that a symbol can take on)

c. data rate can be equal to or greater than baud rate depending upon the value of M

d. data rate is always less than baud rate

QUESTION 4

Determine the number of M value and number of data bits that can be represented using ASK where the possible amplitude values are {0v, +1v, +2v, +3v, +4v, +5v, +6v, +7v}.

a. M=2, N=1 bit per symbol

b. M=4, N=2 bit per symbol

c. M=6, N=3 bit per symbol

d. M=8, N=3 bit per symbol

QUESTION 5

Determine the number of M value and number of data bits that can be represented using FSK where the possible amplitude values are {0 Hz, 60 Hz}.

a. M=2, N=1 bit per symbol

b. M=4, N=2 bit per symbol

c. M=6, N=3 bit per symbol

d. M=8, N=3 bit per symbol