TY - JOUR
T1 - Maximum Completion Time Optimization in Uplink Multi-subcarrier NOMA Systems
AU - Guo, Yongna
AU - Sung, Chi Wan
AU - Liu, Ye
AU - Chen, Chung Shue
PY - 2023/4/18
Y1 - 2023/4/18
N2 - Maximum completion time is a key performance metric for future wireless applications that have stringent latency requirements. This letter studies its optimization in uplink multi-subcarrier non-orthogonal multiple access (NOMA) networks. The joint optimization problem of power allocation, user pairing and scheduling is analyzed and proved to be NP-hard. To tackle the problem, the power allocation subproblem for a single NOMA pair is first derived. Next, for the joint user pairing and scheduling subproblem, an optimal algorithm for a special case is constructed and a suboptimal algorithm for the general case is designed. Our proposed scheme is applicable to data aggregation in wireless federated learning networks, and simulation results validate its superior performance.
AB - Maximum completion time is a key performance metric for future wireless applications that have stringent latency requirements. This letter studies its optimization in uplink multi-subcarrier non-orthogonal multiple access (NOMA) networks. The joint optimization problem of power allocation, user pairing and scheduling is analyzed and proved to be NP-hard. To tackle the problem, the power allocation subproblem for a single NOMA pair is first derived. Next, for the joint user pairing and scheduling subproblem, an optimal algorithm for a special case is constructed and a suboptimal algorithm for the general case is designed. Our proposed scheme is applicable to data aggregation in wireless federated learning networks, and simulation results validate its superior performance.
U2 - 10.1109/LWC.2023.3267816
DO - 10.1109/LWC.2023.3267816
M3 - Article
SN - 2162-2337
JO - IEEE Wireless Communications Letters
JF - IEEE Wireless Communications Letters
ER -