Digital Fairness Algorithms for Satellite Uplink NOMA
Giorgio Taricco

TL;DR
This paper addresses digital fairness in satellite uplink NOMA systems by developing algorithms for rate equalization and SIC ordering, enhancing equitable access for IoT devices in wide coverage areas.
Contribution
It introduces novel algorithms for user rate equalization and SIC ordering tailored for satellite uplink NOMA, considering multi-slot scenarios and complexity-performance trade-offs.
Findings
Optimal SIC ordering improves fairness
Power moderation enhances minimum user rates
Trade-off analysis guides complexity management
Abstract
Achieving digital fairness by using NOMA is one of the more pressing issues in modern wireless communication systems for 5G/6G networks. This is particularly true in the case of satellite uplink systems supporting a population of IoT wireless devices scattered in a wide coverage area. In this scenario, the variability of the link budget across space and time increases the challenges of preventing a situation where only a subset of network users can transmit while others are left unable to do so. This work investigates the characteristics of an uplink NOMA system with the goal of equalizing the achievable rate of the IoT network subscribers. Within the context of single-slot NOMA, two key outcomes are achieved: the determination of the optimal SIC ordering at the receiver and the exploration of power moderation, coordinated by the receiver, to maximize the minimum user rate. In the…
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Taxonomy
TopicsSatellite Communication Systems · Spacecraft Design and Technology · IoT Networks and Protocols
