Maximal Spectral Efficiency of OFDM With Index Modulation Under Polynomial Space Complexity
Maximal Spectral Efficiency of OFDM With Index Modulation Under Polynomial Space Complexity
In this letter, we demonstrate a mapper that enables all waveforms of OFDM with Index Modulation (OFDM-IM) while preserving polynomial time and space computational complexities. Enabling all OFDM-IM waveforms maximizes the spectral efficiency (SE) gain over the classic OFDM but, as far as we know, the computational overhead of the …