Abstract
Orthogonal time frequency space (OTFS) modulation can provide significant error performance than orthogonal frequency division multiplexing (OFDM) modulation in the high-speed scenario. However, the fractional Doppler effects cause Doppler diffusion. In this paper, we analyze the Doppler diffusion from both the formula and geometric levels. In order to alleviate Doppler diffusion, we propose an adaptive orthogonal basis scheme by using the Doppler shifts feedback of the receiver. Our scheme alter the matrix of the inverse symplectic finite Fourier transform (ISFFT) by the feedback. This scheme makes it possible to estimate the channel more accurately. In the simulation results, we show that the bit error rate (BER) and block error rate (BLER) performance of our proposed scheme is not affected compared with OTFS. In addition, our scheme can work even if the Doppler domain dimension is limited and the Doppler shifts feedback of the receiver is inaccurate.
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References
Hadani, R, et al.: Orthogonal Time Frequency Space Modulation. In: 2017 IEEE Wireless Communications and Networking Conference (WCNC), pp. 1–6(2016)
Hadani, R., et al.: Orthogonal Time Frequency Space (OTFS) modulation for millimeter-wave communications systems. In: 2017 IEEE MTT-S International Microwave Symposium (IMS), pp. 681–683(2017)
Zhiqiang, W., et al.: Orthogonal time-frequency space modulation: a promising next-generation waveform. IEEE Wirel. Commun. 28(3), 136–144 (2021)
Khammammetti, V., Mohammed, S.: OTFS-based multiple-access in high doppler and delay spread wireless channels. IEEE Wireless Commun. Lett. 8(2), 528–531 (2019)
Monk, A., Hadani, R., Tsatsanis, M., Rakib, S.: OTFS - Orthogonal Time Frequency Space. arXiv:1608.02993. (2016)
Saif Khan, M.: Derivation of OTFS modulation from first principles. IEEE Trans. Veh. Technol. 70(8), 7619–7636 (2021)
Raviteja, P., Phan, K.T., Hong, Y., Viterbo, E.: Interference cancellation and iterative detection for orthogonal time frequency space modulation. IEEE Trans. Wireless Commun. 17(10), 6501–6515 (2018)
Farhang, A., RezazadehReyhani, A., Doyle, L.E., Farhang-Boroujeny, B.: Low complexity modem structure for ofdm-based orthogonal time frequency space modulation. IEEE Wireless Commun. Lett. 7(3), 344–347 (2018)
Murali, K. R., Chockalingam, A.: On OTFS modulation for high-doppler fading channels. In: 2018 Information Theory and Applications Workshop (ITA), pp. 1–10(2018)
Raviteja, P., Viterbo, E., Hong, Y.: OTFS performance on static multipath channels. IEEE Wireless Commun. Lett. 8(3), 745–748 (2019)
Raviteja, P., Phan, K.T., Hong, Y.: Embedded pilot-aided channel estimation for OTFS in delay-doppler channels. IEEE Trans. Veh. Technol. 68(5), 4906–4917 (2019)
Raviteja, P., Phan, K.T., Hong, Y., Viterbo, E.: Embedded delay-doppler channel estimation for orthogonal time frequency space modulation. In: 2018 IEEE 88th Vehicular Technology Conference (VTC-Fall), pp. 1–5 (2018)
Wenqian, S., Linglong, D., Jianping, A., Pingzhi, F., Robert, W.H.: Channel estimation for orthogonal time frequency space (OTFS) massive MIMO. IEEE Trans. Signal Process. 67(16), 4204–4217 (2019)
6G Vision and Candidate Technologies White Paper (2021). http://www.caict.ac.cn/english/news/202106/P020210608349616163475.pdf
Yiqing, Z., et al.: Service-aware 6G: an intelligent and open network based on the convergence of communication, computing and caching. Digital Commun. Netw. 6(3), 253–260 (2020)
Yiqing, Z., Jiangzhou, W., Sawahashi, M.: Downlink transmission of broadband OFCDM Systems-part II: effect of Doppler shift. IEEE Trans. Commun. 54(6), 1097–1108 (2006)
Yixiao, L. and Sen, W. and Jing, J. and Wei, X. and Hang, L.: Doppler Shift Estimation Based Channel Estimation for Orthogonal Time Frequency Space System. In: 2021 IEEE 94th Vehicular Technology Conference (VTC2021-Fall), pp. 1–6(2021)
Raviteja, P., Hong, Y., Viterbo, E., Biglieri, E.: Practical pulse-shaping waveforms for reduced-cyclic-prefix OTFS. IEEE Trans. Veh. Technol. 68(1), 957–961 (2019)
ACKNOWLEDGEMENTS
This work is supported by National Natural Science Foundation of China (No. 61931005) and Beijing University of Posts and Telecommunications-China Mobile Research Institute Joint Innovation Center.
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Jia, Y., Wang, S., Jin, J., Long, H. (2023). Adaptive Orthogonal Basis Scheme for OTFS. In: Gao, F., Wu, J., Li, Y., Gao, H. (eds) Communications and Networking. ChinaCom 2022. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 500. Springer, Cham. https://doi.org/10.1007/978-3-031-34790-0_5
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DOI: https://doi.org/10.1007/978-3-031-34790-0_5
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