DISCRETE POWER ALLOCATION FOR NON-ORTHOGONAL MULTIPLE ACCESS SYSTEMS

摘要

Apparatuses and corresponding methods for discrete power allocation for a non-orthogonal multiple access, NOMA, system are provided. A set of discrete power allocation values is determined. Each power allocation value is assigned to a particular wireless device, WD, in a set of WDs. The determining includes subjecting the power allocation values to at least one constraint to reduce a number of power allocation value combinations. A plurality of superimposed data signals are transmitted to the WDs in the set. Each data signal is intended for a different one of the WDs in the set and has a different power allocation value. Each WD in the set receives all the plurality of superimposed data signals. A different control signal is transmitted to each WD in the set of WDs. The control signal includes an indication of the power level allocation values of the set of discrete power allocation values.