Systems and methods for noma (non-orthogonal multiple access) transmitter with legacy modulators

A method comprising:

• performing interleaving, or scrambling, or interleaving and scrambling on an input bit sequence to produce an output bit sequence of the same length;
• based on the output bit sequence, producing a modulated symbol stream containing at least one symbol;
• applying a phase adjustment, or an amplitude adjustment, or a phase and amplitude adjustment to each symbol of the modulated symbol stream to produce phase and amplitude adjusted symbols;
• mapping the phase and amplitude adjusted symbols to resource elements to obtain a non-orthogonal multiple access (NoMA) signal;
• and
• outputting the NoMA signal;
• configuring a NoMA scheme implemented by the through one or more NoMA configuration inputs that configure one or more of the interleaving or scrambling or interleaving and scrambling step, the modulation step, the phase and amplitude adjustment step and the symbol-to-resource element mapping step;
• wherein a multiple access (MA) signature produced by the method once configured for the particular NoMA scheme is selectable through one or more MA signature inputs.

An apparatus comprising:

• a processor;
• and
• a non-transitory computer readable storage medium storing programming for execution by the processor, the programming including instructions to:
• perform interleaving, or scrambling, or interleaving and scrambling on an input bit sequence to produce an output bit sequence of the same length;
• based on the output bit sequence, produce a modulated symbol stream containing at least one symbol;
• apply a phase adjustment, or an amplitude adjustment, or a phase and amplitude adjustment to each symbol of the modulated symbol stream to produce phase and amplitude adjusted symbols;
• map the phase and amplitude adjusted symbols to resource elements to obtain a non-orthogonal multiple access (NoMA) signal;
• and
• output the NoMA signal;
• wherein a NoMA scheme implemented by the method is configurable through one or more NoMA configuration inputs that configure one or more of the interleaving, or scrambling, or interleaving and scrambling the modulation step, the phase and amplitude adjustment step and the symbol to resource element mapping step;
• wherein a multiple access (MA) signature produced by the method once configured for the particular NoMA scheme is selectable through one or more MA signature inputs.