Question
Download Solution PDFThe modulation technique that takes the lowest bandwidth among the given
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe modulation technique that takes the lowest bandwidth is SSB-SC
Single Side Band (SSB SC):
1) SSB SC is a form of amplitude modulation where only a single sideband is transmitted and 1 sideband and carrier are suppressed.
2) The advantage of SSB is bandwidth and power-saving over both conventional AM and DSB SC, i.e. DSB SC has a more power consumption than SSB SC.
3) The Bandwidth requirement is only fm, ∴ It needs half the bandwidth than the DSB-SC transmission.
Comparison:
|
Parameter |
SSB |
DSB |
VSB |
|
Power |
Less |
High |
Medium |
|
Bandwidth |
fm |
2 fm |
fm < BW < 2fm |
|
Carrier Suppression |
Complete |
Complete |
No |
|
Sideband Suppression |
One sideband completely |
No |
One sideband suppressed partially. |
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