OFDM-IM performance evaluation under jamming attack

Orthogonal frequency division multiplexing (OFDM) with index modulation (OFDM-IM) conveys extra information bits by the active subcarrier indices that are selected according to input bits. OFDM-IM is a strong transmission technology candidate for the next-generation networks, due to its performance gain over OFDM. In this paper, we analyze the performance of OFDM-IM under jamming attack and propose a new jamming model called arbitrary jamming to adjust jamming power over each subcarrier. We show the superior performance of OFDM-IM in comparison to the classical OFDM, at high signal to jamming power ratios under a jamming attack. We also compare the OFDM-IM system performance in the presence of the barrage jamming and partial band jamming. To support our results, an upper bound on the average bit error probability that is relatively tight at high signal-to-noise and signal-to-jamming power ratio regions is derived under the jamming attack.