Quiz 9

We have an available bandwidth of 100 kHz which spans from 200 to 300 kHz. What is the carrier frequency if we modulated the data by using ASK? Assume d = 1 and r = 1. Give your answer in kHz. 

250

We have an available bandwidth of 100 kHz which spans from 200 to 300 kHz. What is the bit rate if we modulated the data by using ASK? Assume d = 1 and r = 1. Give your answer in kbps. 

50

We have an available bandwidth of 100 kHz which spans from 200 to 300 kHz. What is the bit rate if we modulated the data by using BFSK? Assume d = 1 and r = 1. Give your answer in kbps. 

25

We need to send data 3 bits at a time at a bit rate of 150 kbps. The carrier frequency is 250 kHz. What is the bandwidth of the MFSK modulated Signal? Give your answer in kHz. 

400

We need to send data 3 bits at a time at a bit rate of 150 kbps. The carrier frequency is 250 kHz. What is the highest frequency contained in the MFSK modulated Signal? Give your answer in kHz. 

450

Find the bandwidth for a signal transmitting at 12 Mbps for QPSK. The value of d = 0. Give your answer in MHz. 

6

Compute the Bandwidth Efficiency of 16-PSK. Take d = 1. 

2

Compute the Bandwidth Efficiency of 32-PSK. Take d = 1

2.5

Compute the Bandwidth Efficiency of 16-FSK. Take d = 1. 

0.125

Compute the Bandwidth Efficiency of 32-FSK. Take d = 1. Give your answer in 3 decimals. 

0.078

Which one has the lowest BW efficiency? Take the factor d = 1. 

BFSK

Which one has the highest bit error rate? Take the factor d = 1. SNR is constant for all schemes. 

16-PSK

The bandwidth of an audio signal is 5 kHz. What is the bandwidth required for AM radio station? Give your answer in kHz. 

10

The bandwidth of an audio signal is 5 kHz. What is the bandwidth required for FM radio station? Take Beta = 5. Give your answer in kHz. 

60

Given that the voice signal has a bandwidth that extends from 300 to 3000 Hz. What is the highest frequency of the AM signal if the voice signal is modulated by a 60 kHz carrier frequency? Give your answer in kHz.  

62.7