Papers
Topics
Authors
Recent
Gemini 2.5 Flash
Gemini 2.5 Flash
125 tokens/sec
GPT-4o
47 tokens/sec
Gemini 2.5 Pro Pro
43 tokens/sec
o3 Pro
4 tokens/sec
GPT-4.1 Pro
47 tokens/sec
DeepSeek R1 via Azure Pro
28 tokens/sec
2000 character limit reached

Single-Carrier Delay-Doppler Domain Equalization (2403.16453v1)

Published 25 Mar 2024 in cs.IT, eess.SP, and math.IT

Abstract: For doubly-selective channels, delay-Doppler (DD) modulation, mostly known as orthogonal time frequency space (OTFS) modulation, enables simultaneous compensation of delay and Doppler shifts. However, OTFS modulated signal has high peak-to-average power ratio (PAPR) because of its precoding operation performed over the DD domain. In order to deal with this problem, we propose a single-carrier transmission with delay-Doppler domain equalization (SC-DDE). In this system, the discretized time-domain SC signal is converted to the DD domain by discrete Zak transform (DZT) at the receiver side, followed by delay-Doppler domain equalization (DDE). Since equalization is performed in the DD domain, the SC-DDE receiver should acquire the channel delay-Doppler response. To this end, we introduce an embedded pilot-aided channel estimation scheme designed for SC-DDE, which does not affect the peak power property of transmitted signals. Through computer simulation, distribution of PAPR and bit error rate (BER) performance of the proposed system are compared with those of the conventional OTFS and SC with frequency-domain equalization (SC-FDE). As a result, our proposed SC-DDE significantly outperforms SC-FDE in terms of BER at the expense of additional computational complexity at the receiver. Furthermore, SC-DDE shows much lower PAPR than OTFS even though they achieve comparable coded BER performance.

Definition Search Book Streamline Icon: https://streamlinehq.com
References (27)
  1. Academic press, 2013.
  2. H. Ochiai and H. Imai, “On the distribution of the peak-to-average power ratio in OFDM signals,” IEEE Trans. Commun., vol. 49, no. 2, pp. 282–289, 2001.
  3. T. Wang, J. G. Proakis, E. Masry, and J. R. Zeidler, “Performance degradation of OFDM systems due to Doppler spreading,” IEEE Trans. Wireless Commun., vol. 5, no. 6, pp. 1422–1432, 2006.
  4. H. Ochiai, “On instantaneous power distributions of single-carrier FDMA signals,” IEEE Wireless Commun. Lett., vol. 1, pp. 73–76, Apr. 2012.
  5. H. G. Myung, J. Lim, and D. J. Goodman, “Single carrier FDMA for uplink wireless transmission,” IEEE Veh. Technol. Mag., vol. 1, no. 3, pp. 30–38, 2006.
  6. K. Rikkinen, P. Kyosti, M. E. Leinonen, M. Berg, and A. Parssinen, “THz radio communication: Link budget analysis toward 6G,” IEEE Commun. Mag., vol. 58, no. 11, pp. 22–27, 2020.
  7. D. Falconer, S. L. Ariyavisitakul, A. Benyamin-Seeyar, and B. Eidson, “Frequency domain equalization for single-carrier broadband wireless systems,” IEEE Commun. Mag., vol. 40, no. 4, pp. 58–66, 2002.
  8. R. Hadani, S. Rakib, M. Tsatsanis, A. Monk, A. J. Goldsmith, A. F. Molisch, and R. Calderbank, “Orthogonal time frequency space modulation,” in Proc. IEEE WCNC, Mar. 2017.
  9. H. Lin and J. Yuan, “Orthogonal delay-Doppler division multiplexing modulation,” IEEE Wireless Commun. Lett., vol. 21, no. 12, pp. 11024–11037, 2022.
  10. Z. Wei, W. Yuan, S. Li, J. Yuan, G. Bharatula, R. Hadani, and L. Hanzo, “Orthogonal time-frequency space modulation: A promising next-generation waveform,” IEEE Wireless Commun., vol. 28, no. 4, pp. 136–144, 2021.
  11. S. Li, J. Yuan, W. Yuan, Z. Wei, B. Bai, and D. W. K. Ng, “Performance analysis of coded OTFS systems over high-mobility channels,” IEEE Trans. Wireless Commun., vol. 20, no. 9, pp. 6033–6048, 2021.
  12. H. Lin, J. Yuan, W. Yu, J. Wu, and L. Hanzo, “Multi-carrier modulation: An evolution from time-frequency domain to delay-Doppler domain,” arXiv preprint arXiv:2308.01802, 2023.
  13. P. Raviteja, Y. Hong, E. Viterbo, and E. Biglieri, “Practical pulse-shaping waveforms for reduced-cyclic-prefix OTFS,” IEEE Trans. Veh. Technol., vol. 68, no. 1, pp. 957–961, 2018.
  14. Z. Yuan, F. Liu, W. Yuan, Q. Guo, Z. Wang, and J. Yuan, “Iterative detection for orthogonal time frequency space modulation with unitary approximate message passing,” IEEE Trans. Wireless Commun., vol. 21, no. 2, pp. 714–725, 2021.
  15. F. Lampel, A. Avarado, and F. M. Willems, “On OTFS using the discrete Zak transform,” in Proc. IEEE ICC Workshops, May 2022.
  16. G. Surabhi, R. M. Augustine, and A. Chockalingam, “Peak-to-average power ratio of OTFS modulation,” IEEE Commun. Lett., vol. 23, no. 6, pp. 999–1002, 2019.
  17. P. Wei, Y. Xiao, W. Feng, N. Ge, and M. Xiao, “Charactering the peak-to-average power ratio of OTFS signals: A large system analysis,” IEEE Trans. Wireless Commun., vol. 21, no. 6, pp. 3705–3720, 2021.
  18. S. Gao and J. Zheng, “Peak-to-average power ratio reduction in pilot-embedded OTFS modulation through iterative clipping and filtering,” IEEE Commun. Lett., vol. 24, no. 9, pp. 2055–2059, 2020.
  19. C. Naveen and V. Sudha, “Peak-to-average power ratio reduction in otfs modulation using companding technique,” in 2020 5th international conference on devices, circuits and systems (ICDCS), pp. 140–143, IEEE, 2020.
  20. Y. Hama and H. Ochiai, “Time-frequency domain non-orthogonal multiple access for power efficient communications,” IEEE Trans. Wireless Commun., vol. 22, pp. 5711–5724, Sept. 2023.
  21. Y. Hama and H. Ochiai, “On the achievable spectral efficiency of non-orthogonal frequency division multiplexing,” IEEE Trans. Commun., vol. 71, pp. 6246–6257, Nov. 2023.
  22. F. Hlawatsch and G. Matz, Wireless communications over rapidly time-varying channels. Academic press, 2011.
  23. S. K. Mohammed, “Derivation of OTFS modulation from first principles,” IEEE Trans. Veh. Technol., vol. 70, no. 8, pp. 7619–7636, 2021.
  24. H. Bolcskei and F. Hlawatsch, “Discrete Zak transforms, polyphase transforms, and applications,” IEEE Trans. Signal Process., vol. 45, no. 4, pp. 851–866, 1997.
  25. A. Nimr, M. Chafii, M. Matthe, and G. Fettweis, “Extended GFDM framework: OTFS and GFDM comparison,” in Proc. IEEE GLOBECOM, Dec. 2018.
  26. G. Surabhi and A. Chockalingam, “Low-complexity linear equalization for OTFS modulation,” IEEE Commun. Lett., vol. 24, no. 2, pp. 330–334, 2019.
  27. P. Raviteja, K. T. Phan, and Y. Hong, “Embedded pilot-aided channel estimation for OTFS in delay-Doppler channels,” IEEE Trans. Veh. Technol., vol. 68, no. 5, pp. 4906–4917, 2019.

Summary

We haven't generated a summary for this paper yet.

Ai Sparkles Streamline Icon: https://streamlinehq.com Summarize Now
X Twitter Logo Streamline Icon: https://streamlinehq.com

Tweets