An Energy Effcient Design of Hybrid NOMA Based on Flexible SIC Methods

This paper aims to reveal the potential of hybrid non-orthogonal multiple access (NOMA) in improving energy efficiency, which combines the advantages of NOMA and conventional orthogonal multiple access (OMA). In particular, a novel hybrid NOMA scheme is proposed, which can be implemented as a simple add-on to the legacy OMA network. Specifically, in the proposed hybrid NOMA scheme, a user can transmit signals by using not only its own allocated channel resource block as in OMA, but also sharing the channel of other users via NOMA. To release the potential of hybrid NOMA, a flexible successive interference cancellation (SIC) method is adopted. Rigorous analysis is provided, which indicates that even with less energy consumption, the proposed hybrid NOMA scheme offers a higher data rate than the conventional OMA scheme. The numerical results support the analysis and highlight the superior performance of HSIC in comparison to FSIC.

An Energy Effcient Design of Hybrid NOMA Based on Flexible SIC Methods

Yanshi Sun, Wei Cao, Hefei University of Technology; Ning Wang, China University of Mining and Technology; Momiao Zhou, Hefei University of Technology; Zhiguo Ding, Khalifa University