Power Minimization for Multi-cell Uplink NOMA with Imperfect SIC

TL;DR

This paper addresses power minimization in multi-cell uplink NOMA systems with imperfect SIC, proposing optimal solutions and analyzing the impact of SIC imperfections on system performance.

Contribution

It introduces a linear programming approach for power minimization in multi-cell uplink NOMA with imperfect SIC, offering both centralized and distributed solutions.

Findings

Proposed linear programming-based optimal solutions.

Verified performance through numerical simulations.

Analyzed the impact of imperfect SIC on power and system performance.

Abstract

In this paper, we investigate a multi-cell uplink non-orthogonal multiple access (NOMA) system with imperfect successive interference cancellation (SIC). The objective of the formulated optimization problem is to minimize the total power consumption under users' quality-of-service constraints. The considered problem is first transformed into a linear programming problem, upon which centralized and distributed optimal solutions are proposed. Numerical results are presented to verify the performance of the proposed solutions and evaluate the impact of imperfect SIC on the system performance.