QUESTION 19 A microwave data link has been designed to opera

QUESTION 19: A microwave data link has been designed to operate at 110,000 symbols per second while encoding 14 bits per symbol. The receiving equipment requires at least a 50 dB signal to noise ratio in order to operate without significant error.

a- At least 55 kHz of bandwidth on the transmission channel are required for the attempted system.

b- The data rate of the designed link will be 1.54 Mbps.

c- If the actual signal to noise ratio is 100 dB, the system could support encoding as many as 17 bits per symbol.

d- There is not enough information given to determine the minimum transmission power needed to make sure an acceptable power level arrives at the receiver.

e- Exactly 16,348 different symbols are needed to support 14 bits per symbol.

f- If the background noise at the receiver is -50 dBm, the receive power will need to be at least 1 dBm.

Solution

Answer:

c. If the actual signal to noise ratio is 100 dB, the system could support encoding as many as 17 bits per symbol.