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Orthogonal Time Frequency Space Modulation
Abstract
A new two-dimensional modulation technique called Orthogonal Time Frequency Space (OTFS) modulation designed in the delay-Doppler domain is introduced. Through this design, which exploits full diversity over time and frequency, OTFS coupled with equalization converts the fading, time-varying wireless channel experienced by modulated signals such as OFDM into a time-independent channel with a complex channel gain that is roughly constant for all symbols. Thus, transmitter adaptation is not needed. This extraction of the full channel diversity allows OTFS to greatly simplify system operation and significantly improves performance, particular in systems with high Doppler, short packets, and large antenna arrays. Simulation results indicate at least several dB of block error rate performance improvement for OTFS over OFDM in all of these settings. In addition these results show that even at very high Dopplers (500 Km/h), OTFS approaches channel capacity through linear scaling of throughput with the MIMO order, whereas the performance of OFDM under typical design parameters breaks down completely.
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Citations
Cited by
Integrated Sensing and Communications: Toward Dual-Functional Wireless Networks for 6G and Beyond
Liu, F., Cui, Y., Masouros, C., Xu, J., Han, T. X., Eldar, Y. C., & Buzzi, S. (2022) · IEEE Journal on Selected Areas in Communications · doi:10.1109/jsac.2022.3156632 · Cited by 3,857
Noor-A-Rahim, M., Liu, Z., Lee, H., Khyam, M. O., He, J., Pesch, D., Moessner, K., Saad, W., & Poor, H. V. (2022) · Proceedings of the IEEE · doi:10.1109/jproc.2022.3173031 · Cited by 737
Integrated Sensing and Communication Signals Toward 5G-A and 6G: A Survey
Wei, Z., Qu, H., Wang, Y., Yuan, X., Wu, H., Du, Y., Han, K., Zhang, N., & Feng, Z. (2023) · IEEE Internet of Things Journal · doi:10.1109/jiot.2023.3235618 · Cited by 686
Practical Pulse-Shaping Waveforms for Reduced-Cyclic-Prefix OTFS
Raviteja, P., Hong, Y., Viterbo, E., & Biglieri, E. (2019) · IEEE Transactions on Vehicular Technology · doi:10.1109/tvt.2018.2878891 · Cited by 616
Channel Estimation for Orthogonal Time Frequency Space (OTFS) Massive MIMO
Shen, W., Dai, L., An, J., Fan, P., & Heath, R. W. (2019) · IEEE Transactions on Signal Processing · doi:10.1109/tsp.2019.2919411 · Cited by 459
Metadata
- Authors
- Hadani, R., Rakib, S., Tsatsanis, M., Monk, A., Goldsmith, A. J., Molisch, A. F., & Calderbank, R.
- Venue
- 2017 IEEE Wireless Communications and Networking Conference (WCNC)
- Publisher
- IEEE
- Published
- 2017-03
- Pages
- 1-6
- ISSN
- 1525-3511 (ISSN-L)
- OpenAlex
- W2612254130
- Cited by
- 1,893
- References
- 0
- FWCI
- 50.59
- Type
- conference paper
- Language
- en
- Open access
- closed
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- Hadani, R., Rakib, S., Tsatsanis, M., Monk, A., Goldsmith, A. J., Molisch, A. F., & Calderbank, R. (2017). Orthogonal Time Frequency Space Modulation. 2017 IEEE Wireless Communications and Networking Conference (WCNC). https://doi.org/10.1109/wcnc.2017.7925924
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