Jump to content

Single-sideband suppressed-carrier transmission

Add links
From Wikipedia, the free encyclopedia
This is an old revision of this page, as edited by 218.102.93.208 (talk) at 12:53, 9 October 2004. The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Single-sideband Suppressed-Carrier is a telecommunication transfer mode, which belongs to Amplitude Modulation.

The information represented by the modulating signal is contained in both the upper and the lower sidebands. Since each modulating frequency f(1) produces corresponding upper and lower side-frequencies f(c)+f(i) or f(c)-f(i')

It is not necessary to transmit both side-bands. Either one can be suppressed at the transmitter without any loss of information.

Advantages of SSB

  • Smaller transmitter power
  • Smaller bandwidth (one-half that of a DSB)
  • Less noise at the receiver
  • Size, weight and peak antenna voltage of the SSB transmitter are significantly less than those for the standard AM transmitter.

Generation of SSB

Diagrams are to be included.

SSB is obtained by selecting the wanted sideband (either USB or LSB) in a DSB-SC AM by means of a suitable BPF.

The sidebands are shown as triangles only to illustrate the mirror image relationship between the sidebands.

Retrieved from "https://en.wikipedia.org/w/index.php?title=Single-sideband_suppressed-carrier_transmission&oldid=6449464"