Abstract
Orthogonal frequency division multiplexing (OFDM) with index modulation (OFDM-IM) that carries part of the incoming bits by active subcarrier indices is a recently proposed multicarrier modulation technique. OFDM-IM is considered as a promising candidate for 5G and beyond, due to its superiority over OFDM. In this paper, we show that uncoded OFDM-IM can achieve better error performance than uncoded OFDM in the presence of barrage jamming (BJ). Low-density parity-check (LDPC) coding is used to further improve the robustness of OFDM-IM system against jamming attacks. We investigate the optimum log-likelihood ratio (LLR) values of index bits and modulation bits under a jamming attack. We also show the superior performance of coded OFDM-IM, when compared to classical OFDM, at a high code rate in the presence of BJ. We propose a new model for partial band jamming (PBJ) that can attack each subcarrier with different power by adjusting the jamming coefficients. Simulation results show that OFDM-IM is more robust against PBJ than BJ.
| Original language | English |
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| Title of host publication | ICTC 2020 - 11th International Conference on ICT Convergence |
| Subtitle of host publication | Data, Network, and AI in the Age of Untact |
| Publisher | IEEE Computer Society |
| Pages | 69-74 |
| Number of pages | 6 |
| ISBN (Electronic) | 9781728167589 |
| DOIs | |
| Publication status | Published - 21 Oct 2020 |
| Event | 11th International Conference on Information and Communication Technology Convergence, ICTC 2020 - Jeju Island, Korea, Republic of Duration: 21 Oct 2020 → 23 Oct 2020 |
Publication series
| Name | International Conference on ICT Convergence |
|---|---|
| Volume | 2020-October |
| ISSN (Print) | 2162-1233 |
| ISSN (Electronic) | 2162-1241 |
Conference
| Conference | 11th International Conference on Information and Communication Technology Convergence, ICTC 2020 |
|---|---|
| Country/Territory | Korea, Republic of |
| City | Jeju Island |
| Period | 21/10/20 → 23/10/20 |
Bibliographical note
Publisher Copyright:© 2020 IEEE.
Funding
The work presented in this paper is supported by ASELSAN Inc.
| Funders |
|---|
| Aselsan |
Keywords
- Index modulation
- jamming
- log-likelihood ratio (LLR)
- low-density parity-check (LDPC)
- orthogonal frequency division multiplexing (OFDM)
- performance analysis