Work

On Energy Efficiency of Hybrid NOMA

Year: 2025

Type: article

Abstract: This paper aims to prove the significant superiority of hybrid non-orthogonal multiple access (NOMA) over orthogonal multiple access (OMA) in terms of energy efficiency. In particular, a novel hybrid NOMA scheme is proposed in which a user can transmit signals not only by using its own time slot but also by using the time slots of other users. The data rate maximization problem is studied by optimizing the power allocation, where closed-form solutions are obtained. Furthermore, the conditions under which hybrid NOMA can achieve a higher instantaneous data rate with less power consumption than OMA are obtained. It is proved that the probability that hybrid NOMA can achieve a higher instantaneous data rate with less power consumption than OMA approaches one in the high SNR regime, indicating the superiority of hybrid NOMA in terms of power efficiency. Numerical results are also provided to verify the developed analysis and also to demonstrate the superior performance of hybrid NOMA.

Source: IEEE Transactions on Vehicular Technology

DOI: 10.1109/tvt.2025.3609492

Authors: Yanshi Sun, Zhiguo Ding, Yun Hou, George K. Karagiannidis

Institutions: Hefei University of Technology, University of Manchester, Hang Seng University of Hong Kong, Aristotle University of Thessaloniki

Language: English

Topic: Advanced Wireless Communication Technologies

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Industry, innovation and infrastructure

Open Access status: green

Funder: National Natural Science Foundation of China