Communicating data of a first user equipment and data of a second user equipment on shared resources of a wireless communication system

A method operating a user equipment in a wireless communication system, the method comprising:

• for receiving, at the user equipment, data from a base station in the wireless communication system on resources shared by the user equipment and at least one further user equipment, receiving a superimposed signal comprising a first data signal including data for at least the user equipment and a second data signal including data for at least the further user equipment,
• wherein the first data signal and the second data signal are modulated using different constellations prior to superimposing the first and second data signals, the first data signal being modulated using a first constellation, and the second data signal being modulated using a second constellation, the first constellation being different from the second constellation, wherein the first constellation is selected based on one or more channel properties a first channel between the user equipment and the base station, and wherein the second constellation is selected based on one or more channel properties of a second channel between the further user equipment and the base station;
• processing, at the user equipment, the superimposed signal using the first constellation used for the modulation of the first data signal and the second constellation used for the modulation of the second data signal, in case the user equipment is closer to the base station than the further user equipment or in case the one or more channel properties of the first channel are of a first amount, and
• processing, at the user equipment, the superimposed signal using only the first constellation used for the modulation of the first data signal, in case the user equipment is farther from the base station than the further user equipment or in case the one or more channel properties of the first channel are of a second amount,
• wherein the user equipment:
• receives a first set of resources or a data frame comprising the superimposed signal;
• receives a second set of resources or a pilot frame comprising pilot signals to be used for channel estimation and/or synchronization, and
• wherein the pilot signals are modulated using a third constellation, the third constellation being different from the first constellation and from the second constellation, or the third constellation being the same as one of the first and second constellations.