Green NOMA With Multiple Interference Cancellation (MIC) Using Sector-Based Resource Allocation

Abstract

This paper considers a novel non-orthogonal multiple access (NOMA) enabled device-to-device (D2D) communication fifth generation cellular network, practicing sectorization. Though successive interference cancellation (SIC) is the key aspect of NOMA in the current wireless communication systems, the proposed NOMA-based approach introduces the concept of multiple interference cancellation (MIC), which stimulates the phenomenon of cancellation of interference levels in the network, involving optimal resource allocation. The interference reduction achieved with MIC is way below SIC. Such a framework improves the receiver’s signal-to-interference-plus-noise ratio (SINR), as shall be examined. Promising gains are provided by the proposed scheme, in terms of sum rate of the network, total energy-efficiency (EE), and fairness factor (FF). MIC reduces the power levels at the regenerators, achieving considerable circuit power saving. Another important redressal of the proposed scheme is the reduced level of complexity achieved with MIC. The implications of proposing MIC in the NOMA-D2D networks are evaluated through simulation results.