Reliability using signal space diversity in cooperative non-orthogonal multiple access (NOMA)

A first user equipment, UE, (UE-2) configured to communicate with a second UE (UE-1) and a network node for performing non-orthogonal multiple access, NOMA, communication, the first UE comprising processing circuitry configured to:

• receive a first signal as part of the NOMA communication, the first signal including a first component of interleaved-rotated symbols associated with the first UE (UE-2);
• receive a second signal as part of the NOMA communication, the second signal including a second component of interleaved-rotated symbols associated with the first UE (UE-2), the second signal not including the first component of interleaved-rotated symbols;
• and
• determine original symbols based at least in part on the first and second signals.

A method implemented by a first user equipment, UE, (UE-1) configured to communicate with a second UE (UE-2) for performing non-orthogonal multiple access, NOMA, communication, the method comprising:

• receiving a first signal including a first component of interleaved-rotated symbols associated with the second UE (UE-2);
• determining a second component of the interleaved-rotated symbols based at least in part on the received first component;
• and
• causing transmission of a second signal including the second component of the interleaved-rotated symbols to the second UE (UE-2) as part of the NOMA communication, the second signal not including the first component of the interleaved-rotated symbols.

A method implemented by a first user equipment, UE, (UE-2) configured to communicate with a second UE and a network node for performing non-orthogonal multiple access, NOMA, communication, the method comprising:

• receiving a first signal as part of the NOMA communication, the first signal including a first component of interleaved-rotated symbols associated with the first UE (UE-2);
• receiving a second signal as part of the NOMA communication, the second signal including a second component of interleaved-rotated symbols associated with the first UE (UE-2), the second signal not including the first component of interleaved-rotated symbols;
• and
• determining original symbols based at least in part on the first and second signals.