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Module 1: Analog Modulation

20242m

What is the main advantage of SSB over DSB?
(i) Requires less power
(ii) Better noise immunity
(iii) Requires less bandwidth
(iv) Both (i) & (ii)

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Answer

Correct Option: (iii) Requires less bandwidth

Explanation

SSB vs DSB-SC (both suppressed carrier): DSB 2fm2f_m, SSB fmf_m → 50% saving. Power: SSB saves half sideband power but main saving is bandwidth. Both save carrier power vs AM. Better noise immunity not primary; SSB still needs coherent detection.

Final Answer

Less bandwidth → Option (iii).

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