SSB: single side band modulation is a type of modulation used to transmit information,such as an audio signal.it uses transmitter power and bandwidth more efficiently.

Extended single sideband

• SSB(medium 1)---4khz(bandwidth)
• SSB(wide-2)------6khz(bandwidth)

DSB: double sideband modulation is same as that of AM wave and it is equal to twitch the frequency of the modulation signal.DSB signals which are passband signals have a bandwidth of 2B.