Mgobhozi, BhekinkosiNleya, Bakhe2024-02-132024-02-132023-11-16Mgobhozi, B. and Nleya, B. 2023. Efficient index modulation techniques for 5G and beyond. 2023 International Conference on Electrical, Computer and Energy Technologies (ICECET). Presented at: 2023 International Conference on Electrical, Computer and Energy Technologies (ICECET). doi:10.1109/icecet58911.2023.10389505https://hdl.handle.net/10321/5130Index modulation (IM) techniques are emerging as promising approaches to improve spectral efficiency and reliability for 5G/future wireless networks. This paper pro vides an overview of key IM schemes including spatial modula tion, orthogonal frequency division multiplexing with index modulation (OFDM-IM), and enhanced variants like SIM OFDM. The spectral efficiency gains of these techniques are quantified mathematically. Spatial modulation uses antenna indices to convey additional information bits, while OFDM-IM utilizes subcarrier indices. SIM-OFDM further activates sub carriers selectively based on incoming bits. Experiments demonstrate spectral efficiency improvements over classical OFDM.6 penIndex modulationOrthogonal frequency division multiplexingSpatial modulationMaximum likelihood detectionConference2024-02-1010.1109/icecet58911.2023.10389505