Re: communications 1
There are two methods:
1- Using Filtering
You generate a DSB signal and then apply highpass/lowpass/bandpass filtering to suppress one of the sidebands. The problem is that ideal filtering doesn't exist and thus the gradual cutoff of a filter causes partial suppression of the other band also !
2- Using Hilbert transform
You can search for it. It makes a 90 phase shift for all the spectrum and employs a certain block diagram, this is not ideally realizable because phase shift cannot be applied to the whole frequency domain.