Resource Allocation for OFDM-NOMA Systems under Multiuser Scenarios with Different Speeds

Algorithm 1

Many-to-many matching based SC-US assignment.

1: Initialize.

2: Construct the initial Subcarrier-User matching set based on sum rate.

3: Repeat.

4: For any user , it searches for another subcarrier with . Let .

5: For a given , calculate the candidate for the swapping pairs .

6: if is a swapping-blocking pair then.

7: ;

8: end if.

9: Keep the swapping-blocking pair with , then . Set .

10: Until There are no swapping-blocking pairs.

11: Output the stable matching .