Comparative Performance Evaluation of LDPC Coded OFDM-IM Under Jamming Attack

Kaplan A., Can M., Altunbaş İ., Kurt G. K., Kucukyavuz D.

IEEE Transactions on Vehicular Technology, vol.72, no.5, pp.6209-6224, 2023 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 72 Issue: 5
  • Publication Date: 2023
  • Doi Number: 10.1109/tvt.2022.3232491
  • Journal Name: IEEE Transactions on Vehicular Technology
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Applied Science & Technology Source, Business Source Elite, Business Source Premier, Communication Abstracts, Compendex, Computer & Applied Sciences, Environment Index, INSPEC, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.6209-6224
  • Keywords: Index modulation, jamming, log-likelihood ratio (LLR), low-density parity-check (LDPC), orthogonal frequency division multiplexing (OFDM), performance analysis
  • Istanbul Technical University Affiliated: Yes


Orthogonal frequency division multiplexing (OFDM) with index modulation (IM), OFDM-IM, is considered as a potential enabling technology for 5G and beyond wireless networks due to its advantages compared to OFDM. This paper firstly examines and compares the error performance of uncoded OFDM-IM and OFDM under barrage jamming (BJ) and partial band jamming (PBJ) attacks. In addition, we propose a novel arbitrary jamming (AJ) model and extend our analysis to this attack. We demonstrate that uncoded OFDM-IM is more resistant against jamming attacks when compared to uncoded OFDM. In the OFDM-IM system, we derive an upper bound for the average bit error probability under AJ attack to verify our simulation results. The achievable rate of OFDM-IM under jamming attack is also investigated. We then apply low-density parity-check (LDPC) coding to further enhance the strength of the system under a heavy jamming attack. The optimum log-likelihood ratios for the OFDM-IM system in the case of jamming attack are calculated. We compare and analyze the bit error rate (BER) performances of LDPC coded OFDM and OFDM-IM for different jamming types, code rates, code block lengths, and code decoding algorithms through extensive computer simulations. At high code rates under jamming attack, we prove that the coded OFDM-IM has BER performance superiority. Moreover, we demonstrate that coded OFDM-IM is more resistant against imperfect channel state information than coded OFDM under BJ. We also compare the performances of LDPC coded OFDM-IM and the higher-order OFDM-IM (HO-OFDM-IM), an enhanced version of OFDM-IM.