Journal
2022 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS WORKSHOPS (ICC WORKSHOPS)
Volume -, Issue -, Pages 922-927Publisher
IEEE
DOI: 10.1109/ICCWorkshops53468.2022.9814661
Keywords
OTFS; SIM-OTFS; ABER; transmission rate; multipath
Categories
Funding
- Innovation and Development Joint Foundation of Shandong Provincial Natural Science Foundation [ZR2021LZH003]
- National Nature Science Foundation of China [61771291, 61871414, 62071202]
- National Defense Preliminary Research Project [90903030202]
- Shandong Important Innovation Project [2020CXGC010109]
- Open Research Fund of the Key Laboratory of Dynamic Cognitive System of Electromagnetic Spectrum Space, Ministry of Industry and Information Technology [KF20202108]
- Shandong Provincial Natural Science Foundation [ZR2020MF009]
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This paper proposes a SIM-OTFS system for high mobility communication, which achieves higher transmission rate by using index modulation in the space and delay-Doppler domains. The system model, signal processing, and ABER performance of SIM-OTFS are analyzed, demonstrating its superiority over traditional MIMO-OTFS, SM, and SM-OFDM-IM systems under high mobility. The influence of multipath channel on SIM-OTFS performance is also discussed.
In order to enhance the effectiveness and the reliability of high mobility communication, we propose a spatialindex modulation (SIM) based orthogonal time frequency space (OTFS) system, named SIM-OTFS, which is a three dimensional index modulation (IM) adopting the transmit antenna, delay, and Doppler indexes in the space and delay-Doppler domains, respectively, to achieve higher transmission rate. The system model and the detailed signal processing of the SIM-OTFS system are provided. Then, we also analyze the average bit error rate (ABER) performance of the proposed SIM-OTFS system based on the union bound theory. Numerical results verify the correctness of the theoretical ABER analysis and demonstrate the ABER superiority of the SIM-OTFS system over the traditional multiple-input multiple-output OTFS (MIMO-OTFS) and spatial modulation (SM) and IM based orthogonal frequency division multiplexing (SM-OFDM-IM) systems under high mobility. Furthermore, the influence of the multipath channel on the ABER performance of the SIM-OTFS system is also illustrated.
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