A new type of modulation: BALANCED SSB

 

We know the advantages and how a "balanced audio cable" works: 

The signal to be transmitted is split in opposite phases onto the two conductors 

of the cable and brought back into the same phase position in the receiver - 

thereby canceling out the interference that is introduced into the cable.

I wanted to transfer this concept to a type of modulation: At the transmitter, the signal is split in opposite phases onto the upper and lower sidebands (USB and LSB) of the same frequency (!).  At the receiver, one sideband is phase-shifted and added to the other -  thereby canceling out the interference.

 

 

Which disturbances can be eliminated in this way? 

 

- Amplitude disturbances such as "cracking," "rumble," "thunderstorm disturbances," 

 etc. 

 

Which disturbances cannot be eliminated in this way? 

 

- Phase and fading disturbances in the propagation channel.

 

 

I built the transmitter and receiver using "GNU Radio" as an SDR. 

The transmitter is a "Hack RF" and the receiver is a "USB-RTL dongle".