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# FM analysis of NTSC signal

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A low definition television signal is transmitted over a radio link using frequency modulation. The baseband video signal extends from 0 Hz to 1.0 MHz, and the signal voltage varies between 0 V and +1V. The modulation constant of the transmitter is 1 MHz per volt.

a. What is the peak frequency deviation of the FM signal and bandwidth of the FM signal?

b. The signal is received with CNR = 30.0 dB. What is the SNR of the recovered video signal at the radio receiver output?

c. The signal could have been sent using DSB-LC modulation. What bandwidth would be required to transmit the signal with DSB-LC?

d. Give two reasons why FM is used in this application rather than AM.

##### Solution Summary

A low definition television signal is transmitted over a radio link using frequency modulation. The baseband video signal extends from 0 Hz to 1.0 MHz, and the signal voltage varies between 0 V and +1V. The modulation constant of the transmitter is 1 MHz per volt.

a. What is the peak frequency deviation of the FM signal and bandwidth of the FM signal?

b. The signal is received with CNR = 30.0 dB. What is the SNR of the recovered video signal at the radio receiver output?

c. The signal could have been sent using DSB-LC modulation. What bandwidth would be required to transmit the signal with DSB-LC?

d. Give two reasons why FM is used in this application rather than AM

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A low definition television signal is transmitted over a radio link using frequency modulation. The baseband video signal extends from 0 Hz to 1.0 MHz, and the signal voltage varies ...