Apparatus and method for signalling of non-orthogonal transmissions

A method for receiving superposed symbols, the method comprising:

• receiving a plurality of superposed symbols during a transmission time interval;
• receiving, prior to or during the transmission time interval, a first set of decoding information and superposition information including a power ratio, wherein the superposition information provides an indication that the transmission time interval includes superposed symbols;
• determining a first superposed symbol from the plurality of superposed symbols, based on the superposition information and when a modulation order of the first superposed symbol is a pre-defined modulation order, wherein the first superposed symbol is corresponding to a first user equipment;
• generating a residual signal based on the first superposed symbol and the power ratio;
• and
• determining a second second superposed symbol based on the residual signal and the first set of decoding information, wherein the second superposed symbol is corresponding to a second user equipment.