Energy Efficiency Analysis of Novel Index Modulation-Based Non-Orthogonal Multiple Access (IMNOMA) System for 5G Networks

The requirements for high data rates, spectrum efficiency, energy efficiency, and worldwide connectivity should be addressed by future generations of wireless communication networks. The orthogonal multiple access systems cannot meet these demands. Resources are allocated to each user orthogonally in OMA techniques, including TDMA, FDMA, CDMA, and OFDMA. In a NOMA system, all users can concurrently share resources that are available to them. NOMA is the novel multiple access technology as it satisfies the requirements for high data speeds, spectrum efficiency, widespread connectivity. Users are informed in Index modulation utilising both constellation symbols as well as index symbols. This work proposes IM-NOMA, a unique Index Modulation-based NOMA system. A detailed analysis of the proposed scheme's energy efficiency is performed. Energy efficiency of the proposed scheme is analyzed in detail for different parameters. When compared to the existing modulation schemes, the suggested 1M-NOMA performs significantly better.

I. Introduction

Due to the advancement of wireless technology, massive connectivity and data rates are in high demand. OMA approach includes the multiple access methods used in 1G, 2G, and 3G that use frequency, time, and code, as well as OFDMA in 4G. Resources such as frequency, time, code are orthogonally allotted to each user in OMA [1].