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Downlink IM-NOMA system model is represented in the figure. NOMA supports high spectral efficiency, massive connectivity because users can use the same frequency and temporal resources as traditional OMA. Index modulation (IM) is a simple but effective digital modulation method that sends extra information bits via the resource indices of a matching communication system. Compared to conventional communication systems, IM offers significant spectrum and energy efficiency, making it a potential approach for the future. |
IEEE/ICACT20240067 Slide.07
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