Calculation of carrier frequency & Figure of Merit for SSB signal

What is the carrier frequency in an AM wave when its highest frequency component is 850Hz and the bandwidth of the signal is 50Hz?

a.) 80 Hz
b.) 695 Hz
c.) 625 Hz
d.) 825 Hz

Correct Answer: d) 825 Hz

Explanation:

Upper frequency = 850Hz

Bandwidth = 50Hz

Therefore lower Frequency = 850-50= 800 Hz

Carrier Frequency = (850-800)/2
= 825 Hz

Noise figure of merit in SSB modulated signal is

a.) 1
b.) Less than 1
c.) Greater than 1
d.) None of the above

Correct Answer: a) 1

Explanation:

A figure of merit used to describe the performance of a system. The figure of merit ‘γ’ is the ratio of output signal to noise ratio to input signal to noise

ratio of a receiver system. Figure of merit for SSB modulation is always 1.