I received the B.S. degree in Electronics Information Engineering from Dalian University of Technology, Dalian, China, in 2018, and the Ph.D. degree from School of Information and Communication Engineering, Dalian University of Technology, Dalian, China, in 2023. My Ph. D. advisor is Prof. Ming Li. I am currently working as a Postdoctoral Scholar with Prof. Swindlehurst at the Department of Electrical Engineering and Computer Science, University of California, Irvine. My research interests mainly focus on signal processing, massive MIMO systems, reconfigurable intelligent surfaces, and integrated sensing and communication. Please feel free to contact me at rangl2@uci.edu.

🔥 News

• 2024.03:   I am invited to present our work about RIS-ISAC on SPS Webinar. [website], [video], [slides]
• 2024.02:   Some codepackages are made public for personal and academic use.
• 2023.11:   My paper is accepted by TWC.
• 2023.09:   My postdoc research starts at UCI. :)
• 2023.08:   My conference paper is accepted by Globecom 2023.
• 2023.07:   I successfully defend my doctoral dissertation.
• 2022.11:   My paper is accepted by WC and CL.
• 2022.10:   I received the National Scholarship.
                  My paper is accepted by WCL.
• 2022.07:   My blog is online. Yeah!

📖 Book Chapters

• M. Li, Rang Liu, H. Luo, and Q. Liu, ``Reconfigurable Intelligent Surface Empowered Integrated Sensing and Communications: Principle, Modeling, and Optimization.’’ In Integrated Sensing and Communications for Future Wireless Networks: Principles, Advances and Key Enabling Technologies, edited by A. Kaushik. Amsterdam, Netherlands: Elsevier, 2024.

• Rang Liu, M. Li, X. Meng, F. Liu, and A. L. Swindlehurst, ``Integrated Sensing and Communications with Reconfigurable Intelligent Surfaces.’’ In Metasurfaces for Wireless Communications. Springer, in production.

📑 Journal

    First and Corresponding Author

1. Rang Liu, M. Li, Q. Liu, and A. L. Swindlehurst, “DOA estimation-oriented joint array partitioning and beamforming designs for ISAC systems,” IEEE Journal, under review.

2. Rang Liu, M. Li, Q. Liu, and A. L. Swindlehurst, “SNR/CRB-constrained joint beamforming and reflection designs for RIS-ISAC systems,” IEEE Trans. Wireless Commun., vol. 23, no. 7, pp. 7456-7470, Jul. 2024. [code]

3. Rang Liu, M. Li, H. Luo, Q. Liu, and A. L. Swindlehurst, “Integrated sensing and communication with reconfigurable intelligent surfaces: Opportunities, applications, and future directions,” IEEE Wireless Commun., vol. 30, no. 1, pp. 50-57, Feb. 2023. [code]

4. Rang Liu, M. Li, and Q. Liu, “Joint transmit waveform and reflection design for RIS-assisted MIMO radar systems,” IEEE Commun. Lett., vol. 27, no. 2, pp. 615-619, Feb. 2023. supporting document

5. Rang Liu, Z. Bo, M. Li, and Q. Liu, “End-to-end learning for symbol-level precoding and detection with adaptive modulation,” IEEE Wireless Commun. Lett., vol. 12, no. 1, pp. 50-54, Jan. 2023.

6. Rang Liu, M. Li, Y. Liu, Q. Wu, and Q. Liu, “Joint transmit waveform and passive beamforming design for RIS-aided DFRC systems,” IEEE J. Sel. Topics Signal Process. (JSTSP), vol. 16, no. 5, pp. 995-1010, Aug. 2022. [code]

7. Rang Liu, M. Li, Q. Liu, and A. L. Swindlehurst, “Joint waveform and filter designs for STAP-SLP-based MIMO-DFRC systems,” IEEE J. Sel. Areas Commun. (JSAC), vol. 40, no. 6, pp. 1918-1931, Jun. 2022. [code]

8. Rang Liu, M. Li, Q. Liu, and A. L. Swindlehurst, “Dual-functional radar-communication waveform design: A symbol-level precoding approach,” IEEE J. Sel. Topics Signal Process. (JSTSP), vol. 15, no. 6, pp. 1316-1331, Nov. 2021.

9. Rang Liu, M. Li, Q. Liu, A. L. Swindlehurst, and Q. Wu, “Intelligent reflecting surface based passive information transmission: A symbol-level precoding approach,” IEEE Trans. Veh. Technol., vol. 70, no. 7, pp. 6735-6749, Jul. 2021. [code]

10. Rang Liu, M. Li, Q. Liu, and A. Lee Swindlehurst, “Joint symbol-level precoding and reflecting designs for IRS-enhanced MU-MISO systems,” IEEE Trans. Wireless Commun., vol. 20, no. 2, pp. 798-811, Feb. 2021. [code]

11. Rang Liu, M. Li, Q. Liu, and A. Lee Swindlehurst, “Secure symbol-level precoding in MU-MISO wiretap systems,” IEEE Trans. Inf. Forens. Security, vol. 15, pp. 3359-3373, Apr. 2020.

12. Rang Liu, H. Li, and M. Li, “Symbol-level hybrid precoding in mmWave multiuser MISO systems,” IEEE Commun. Lett., vol. 23, no. 9, pp. 1636-1639, Sep. 2019.

13. 刘让, 罗泓昊, 李明. 智能超表面在通信感知一体化系统中的应用[J]. 中兴通讯技术, 2022, 28(3): 53-57.

14. Z. Xiao, Rang Liu*, M. Li, Q. Liu, and A. L. Swindlehurst, “A novel joint angle-range-velocity estimation method for MIMO-OFDM ISAC systems,” IEEE Trans. Signal Process., vol. 72, pp. 3805-3818, Aug. 2024.

15. H. Luo, Rang Liu*, M. Li, and Q. Liu, “RIS-aided integrated sensing and communication: Joint beamforming and reflection design,” IEEE Trans. Veh. Technol., vol. 72, no. 7, pp. 9626-9630, Jul. 2023.

16. J. Chu, Rang Liu*, M. Li, Y. Liu, and Q. Liu, “Joint secure transmit beamforming designs for integrated sensing and communication systems,” IEEE Trans. Veh. Technol., vol. 72, no. 4, pp. 4778-4791, Apr. 2023.

17. H. Luo, Rang Liu*, M. Li, Y. Liu, and Q. Liu, “Joint beamforming design for RIS-assisted integrated sensing and communication systems,” IEEE Trans. Veh. Technol., vol. 71, no. 12, pp. 13393-13397, Dec. 2022.

18. Z. Xiao, Rang Liu*, M. Li, Y. Liu, and Q. Liu, “Low-complexity designs of symbol-level precoding for MU-MISO systems,” IEEE Trans. Commun., vol. 70, no. 7, pp. 4624-4639, Jul. 2022.

    Co-Author

1. L. Liu, Rang Liu, L. V. Nguyen, and A. L. Swindlehurst, “Symbol level precoding for systems with improper Gaussian interference,” IEEE Journal, submitted.

2. M. Liu, M. Li, Rang Liu, and Q. Liu, “Distributed distortion-aware beamforming designs for cell-free mMIMO systems,” IEEE Journal, submitted.

3. M. Liu, M. Li, Rang Liu, and Q. Liu, “Dynamic hybrid beamforming designs for ELAA near-field communications,” IEEE Journal, under review.

4. P. Li. M. Li, Rang Liu, Q. Liu, and A. L. Swindlehurst, “MIMO-OFDM ISAC waveform design for range-Doppler sidelobe suppression,” IEEE Trans. Wireless Commun., under review.

5. X. Lv, Rang Liu, M. Li, and Q. Liu, “Target detection in OFDM-ISAC systems: A multipath exploitation approach,” IEEE Wireless Commun. Lett., under review.

6. P. Jiang, Rang Liu, M. Li, W. Wang, and Q. Liu, “SLP-based dual-functional waveform design for ISAC systems: A deep learning approach,” IEEE Trans. Veh. Technol., under review.

7. Z. Xiao, Rang Liu, M. Li, W. Wang, and Q. Liu, “Sparsity exploitation via joint receive processing and transmit beamforming design for MIMO-OFDM ISAC systems,” IEEE Trans. Commun., under review.

8. S. Zhang, Z. Xiao, Rang Liu, M. Li, W. Wang, and Q. Liu, “Multipath exploitation for fluctuating target detection in RIS-assisted ISAC systems,” IEEE Wireless Commun. Lett., vol. 13, no. 9, pp. 2392-2396, Sep. 2024.

9. H. Zhang, Rang Liu, M. Li, W. Wang, and Q. Liu, “Joint sensing and communication optimization in target-mounted STARS-assisted vehicular networks: A MADRL approach,” IEEE Trans. Veh. Technol., vol. 73, no. 7, pp. 10011-10025, Jul. 2024.

10. S. Liu, Ming Li, Rang Liu, W. Wang, and Q. Liu,”Joint transmit beamforming and receive filter design for cooperative multi-static ISAC networks,” IEEE Wireless Commun. Lett., vol. 13, no. 6, pp. 1700-1704, Jun. 2024.

11. Q. Zhu, M. Li, Rang Liu, and Q. Liu, “Cramer-Rao bound optimization for active RIS-empowered ISAC systems,” IEEE Trans. Wireless Commun., vol. 23, no. 9, pp. 11723-11736, Sep. 2024.

12. J. Chu, Z. Lu, Rang Liu, M. Li, and Q. Liu, “Joint beamforming and reflection design for secure RIS-ISAC systems,” IEEE Trans. Veh. Technol., vol. 73, no. 3, pp. 4471-4475, Mar. 2024.

13. Q. Liu, Y. Zhu, M. Li, Rang Liu, Y. Liu, and Z. Lu, “DRL-based secrecy rate optimization for RIS-assisted secure ISAC systems,” IEEE Trans. Veh. Technol., vol. 72, no. 2, pp. 16871-16875, Dec. 2023.

14. Q. Zhu, M. Li, Rang Liu, and Q. Liu, “Joint transceiver beamforming and reflecting design for active RIS-aided ISAC systems,” IEEE Trans. Veh. Technol., vol. 72, no. 7, pp. 9636-9640, Jul. 2023.

15. S. Liu, Rang Liu, M. Li, Y. Liu, and Q. Liu, “Joint BS-RIS-user association and beamforming design for RIS-assisted cellular networks,” IEEE Trans. Veh. Technol., vol. 72, no. 5, pp. 6113-6128, May 2023.

16. P. Ni, M. Li, Rang Liu, and Q. Liu, “Partially distributed beamforming design for RIS-aided cell-free networks,” IEEE Trans. Veh. Technol., vol. 71, no. 12, pp. 13377-13381, Dec. 2022.

17. Q. Zhu, M. Li, Rang Liu, Y. Liu, and Q. Liu, “Joint beamforming designs for active reconfigurable intelligent surface: A sub-connected array architecture,” IEEE Trans. Commun., vol. 70, no. 11, pp. 7628-7643, Nov. 2022.

18. Z. Wang, M. Li, Rang Liu, and Q. Liu, “Joint user association and hybrid beamforming for cell-free mmWave MIMO communications,” IEEE Trans. Commun., vol. 70, no. 11, pp. 7307-7321, Nov. 2022.

19. A. L. Swindlehurst, G. Zhou, Rang Liu, C. Pan, and M. Li, “Channel estimation with reconfigurable intelligent surfaces – A general framework,” Proceedings of the IEEE, vol. 110, no. 9, pp. 1312-1338, Sep. 2022.

20. P. Ni, Rang Liu, M. Li, and Q. Liu, “User association and hybrid beamforming designs for cooperative mmWave MIMO systems,” IEEE Trans. Signal Inf. Process. Netw., vol. 8, pp. 641-654, Jul. 2022.

21. W. Cai, Rang Liu, M. Li, Y. Liu, Q. Wu, and Q. Liu, “IRS-assisted multi-cell multi-band systems: Practical reflection model and joint beamforming designs,” IEEE Trans. Commun., vol. 70, no. 6, pp. 3897-3911, Jun. 2022.

22. Z. Bo, Rang Liu, M. Li, and Q. Liu, “Deep learning based efficient symbol-level precoding design for MU-MISO systems,” IEEE Trans. Veh. Technol., vol. 70, no. 8, pp. 8309-8313, Aug. 2021.

23. Y. Ma, Rang Liu, M. Li, and Q. Liu, “Passive information transmission in intelligent reflecting surface aided MISO systems,” IEEE Commun. Lett., vol. 24, no. 12, pp. 2951-2955, Dec. 2020.

📝 Conference

    First Author

1. Rang Liu, M. Li, and Q. Liu, “Joint space-time adaptive processing and beamforming design for cell-free ISAC systems,” in *Proc. *, 2025.

2. Rang Liu, A. L. Swindlehurst, and M. Li, “CRB optimization for joint array partitioning and beamforming design in ISAC systems,” in Proc. Asilomar Conf. on Signals Systems and Computers, Pacific Grove, CA, USA, Oct. 2024.

3. Rang Liu, M. Li, and Q. Liu, “Joint transmit/receive antenna selection and beamforming design for ISAC systems,” in Proc. IEEE Global Commun. Conf. (GLOBECOM), Kuala Lumpur, Malaysia, Dec. 2023.

4. Rang Liu, M. Li, and A. L. Swindlehurst, “Joint beamforming and reflection design for RIS-assisted ISAC systems,” in Proc. European Signal Process. Conf. (EUSIPCO), Belgrade, Serbia, Aug. 2022, invited paper.

5. Rang Liu, M. Li, Q. Liu, and A. L. Swindlehurst, “Joint transmit waveform and receive filter design for dual-functional radar-communication systems,” in Proc. IEEE Int. Conf. Commun. (ICC), Seoul, South Korea, May 2022.

6. Rang Liu, M. Li, Y. Liu, and Q. Liu, “Symbol-level precoding design for dual-functional radar-communication systems,” in Proc. IEEE Int. Conf. Commun. (ICC), Montreal, Canada, Jun. 2021.

7. Rang Liu, H. Li, M. Li, and Q. Liu, “Secure symbol-level precoding design for QAM signals in MU-MISO wiretap systems,” in Proc. IEEE Int. Conf. Commun. (ICC), Dublin, Ireland, Jun. 2020.

8. Rang Liu, H. Li, M. Li, and Q. Liu, “Symbol-level precoding design for IRS-assisted MU-MISO systems,” in Proc. IEEE Wireless Commun. Netw. Conf. (WCNC), Seoul, Korea (South), May 2020.

9. Rang Liu, H. Li, M. Li, and Q. Liu, “Symbol-level precoding design for intelligent reflecting surface assisted multi-user MIMO systems,” in Proc. Int. Conf. Wireless Commun. Signal Process. (WCSP), Xian, China, Oct. 2019.

10. Rang Liu, H. Li, Y. Guo, M. Li, and Q. Liu, “Hybrid beamformer design with low-resolution phase shifters in MU-MISO SWIPT systems,” in Proc. Int. Conf. Wireless Commun. Signal Process. (WCSP), Hangzhou, China, Oct. 2018.

    Co-Author

1. Y. Sun, Rang Liu, Z. Lu, H. Luo, M. Li, and Q. Liu, “Active reconfigurable intelligent surface empowered synthetic aperture radar imaging,” in Proc. Asilomar Conf. on Signals Systems and Computers, Pacific Grove, CA, USA, Oct. 2024.

2. M. Liu, M. Li, Rang Liu, and Q. Liu, “Distortion-aware beamforming design for MU-MISO systems,” in Proc. Veh. Technol. Conf. (VTC2024-Fall), Washington DC, USA, Oct. 2024.

3. M. Yu, J. Chu, Rang Liu, P. Li, M. Li, and Q. Liu, “Active RIS empowered secure MISO systems: AN and RIF approaches,” in Proc. Veh. Technol. Conf. (VTC2024-Fall), Washington DC, USA, Oct. 2024.

4. P. Jiang, Rang Liu, M. Li, W. Wang, and Q. Liu, “Model-driven deep learning for joint waveform and beamforming design in RIS-ISAC systems,” in Proc. Veh. Technol. Conf. (VTC2024-Fall), Washington DC, USA, Oct. 2024.

5. M. Lu, M. Yu, Rang Liu, S. Liu, M. Li, W. Wang, and Q. Liu, “RIS-based dual-functional access point for energy efficiency in cell-free systems,” in Proc. Veh. Technol. Conf. (VTC2024-Fall), Washington DC, USA, Oct. 2024.

6. M. Liu, M. Li, Rang Liu, and Q. Liu, “A novel dynamic hybrid beamforming design for ELAA systems,” in Proc. IEEE Int. Conf. Commun. (ICC), Denver, USA, Jun. 2024.

7. P. Li, Z. Xiao, M. Li, Rang Liu, and Q. Liu, “Low-range-sidelobe waveform design for MIMO-OFDM ISAC systems,” in Proc. IEEE Int. Conf. Commun. (ICC), Denver, USA, Jun. 2024.

8. P. Jiang, Rang Liu, M. Li, Z. Xiao, and Q. Liu, “Deep learning for SLP-based ISAC waveform design,” in Proc. IEEE Int. Conf. Commun. (ICC), Denver, USA, Jun. 2024.

9. L. V. Nguyen, Rang Liu, and A. L. Swindlehurst, “Exploitation of symmetrical non-convexity for symbol-level DFRC signal design,” in Proc. IEEE Int. Conf. Commun. (ICC), Denver, USA, Jun. 2024.

10. S. Liu, Rang Liu, Z. Lu, M. Li, and Q. Liu, “Cooperative cell-free ISAC networks: Joint BS mode selection and beamforming design,” in Proc. IEEE Wireless Commun. Netw. Conf. (WCNC), Dubai, United Arab Emirates, Apr. 2024.

11. Y. Zheng, Rang Liu, M. Li, and Q. Liu, “End-to-end learning for SLP-based ISAC systems,” in Proc. IEEE Wireless Commun. Netw. Conf. (WCNC), Dubai, United Arab Emirates, Apr. 2024.

12. Y. Yang, Z. Lu, M. Li, Rang Liu, and Q. Liu, “A practical beamforming design for active RIS-assisted MU-MISO systems,” in Proc. IEEE Wireless Commun. Netw. Conf. (WCNC), Dubai, United Arab Emirates, Apr. 2024.

13. H. Zhang, S. Liu, Rang Liu, M. Li, and Q. Liu, “Distributed DRL based beamforming design for RIS-assisted multi-cell systems,” in Proc. IEEE Global Commun. Conf. (GLOBECOM), Kuala Lumpur, Malaysia, Dec. 2023.

14. W. Yang, Rang Liu, W. Cai, M. Li, and Q. Liu, “Channel estimation and pilot allocation for practical RIS-aided wideband OFDMA systems,” in Proc. IEEE Int. Conf. Commun. (ICC), Rome, Italy, May 2023.

15. Z. Xiao, Rang Liu, M. Li, Y. Liu, and Q. Liu, “Joint beamforming design in DFRC systems for wideband sensing and OFDM communications,” in Proc. IEEE Global Commun. Conf. (GLOBECOM), Rio de Janeiro, Brazil, Dec. 2022.

16. J. Chu, Rang Liu, Y. Liu, M. Li, and Q. Liu, “Joint transmit beamforming design for secure communication and radar coexistence systems,” in IEEE Wireless Commun. Netw. Conf. Workshops (WCNCW), Austin, USA, Apr. 2022.

17. Y. Ma, Rang Liu, M. Li, Y. Liu, Q. Wu, and Q. Liu, “Reflection and relay dual-functional RIS assisted MU-MISO systems,” in IEEE Wireless Commun. Netw. Conf. Workshops (WCNCW), Austin, USA, Apr. 2022.

18. Z. Xiao, Rang Liu, Y. Liu, M. Li, and Q. Liu, “Low-complexity grouped symbol-level precoding for MU-MISO systems,” in Proc. IEEE Global Commun. Conf. (GLOBECOM), Madrid, Spain, Dec. 2021.

19. W. Cai, Rang Liu, Y. Liu, M. Li, and Q. Liu, “Joint beamforming designs for intelligent omni surface assisted wreless communication systems,” in Proc. IEEE Global Commun. Conf. (GLOBECOM), Madrid, Spain, Dec. 2021.

20. P. Ni, Rang Liu, M. Li, and Q. Liu, “Hybrid analog-digital beamforming in cooperative mmWave MIMO systems,” in Proc. IEEE Global Commun. Conf. (GLOBECOM), Madrid, Spain, Dec. 2021.

21. Q. Zhu, Rang Liu, Y. Liu, M. Li, and Q. Liu, “Joint design of hybrid and reflection beamforming for RIS-aided mmWave MIMO communications,” in IEEE Globecom Workshops (GC Wkshps), Madrid, Spain, Dec. 2021.

22. J. Chu, Rang Liu, Y. Liu, M. Li, and Q. Liu, “AN-aided secure beamforming design for dual-functional radar-communication systems,” in IEEE/CIC Int. Conf. Commun. China (ICCC Workshops), Xiamen, China, Jul. 2021.

23. S. Liu, P. Ni, Rang Liu, Y. Liu, M. Li, and Q. Liu, “BS-RIS-user association and beamforming designs for RIS-aided cellular networks,” in Proc. IEEE/CIC Int. Conf. Commun. China (ICCC), Xiamen, China, Jul. 2021.

24. Q. Zhu, H. Li, Rang Liu, M. Li, and Q. Liu, “Hybrid beamforming and passive reflection design for RIS-assisted mmWave MIMO systems,” in IEEE Int. Conf. Commun. Workshops (ICC Workshops), Montreal, Canada, Jun. 2021.

25. W. Yang, H. Li, Rang Liu, M. Li, and Q. Liu, “Channel estimation for practical IRS-assisted OFDM systems,” in IEEE Wireless Commun. Network Conf. Workshops (WCNCW), Nanjing, China, Apr. 2021.

26. W. Cai, Rang Liu, Y. Liu, M. Li, and Q. Liu, “Intelligent reflecting surface assisted multi-cell multi-band wireless networks,” in Proc. IEEE Wireless Commun. Netw. Conf. (WCNC), Nanjing, China, Apr. 2021.

27. Z. Bo, Rang Liu, Y. Guo, M. Li, and Q. Liu, “Deep learning based low-resolution hybrid precoding design for mmWave MISO systems,” in IEEE Globecom Workshops (GC Wkshps), Taipei, Taiwan, Dec. 2020.

28. H. Li, Rang Liu, Z. Wang, M. Li, and Q. Liu, “Precoder design for dynamically sub-connected hybrid architecture in MU-MISO-OFDM systems,” in Proc. IEEE Veh. Technol. Conf. (VTC2020-Fall), Victoria, Canada, Dec. 2020.

29. Z. Wang, Rang Liu, H. Li, M. Li, and Q. Liu, “Hybrid beamforming design for C-RAN based mmWave cell-free systems,” in Proc. IEEE Veh. Technol. Conf. (VTC2020-Fall), Victoria, Canada, Dec. 2020.

30. H. Li, Rang Liu, M. Li, Q. Liu, and X. Li, “IRS-enhanced wideband MU-MISO-OFDM communication systems,” in Proc. IEEE Wireless Commun. Netw. Conf. (WCNC), Seoul, Korea (South), May 2020.

31. H. Li, Rang Liu, M. Li, and Q. Liu, “FP-based hybrid precoding with dynamic subarrays and low-resolution PSs,” in Proc. Int. Conf. Wireless Commun. Signal Process. (WCSP), Xian, China, Oct. 2019.

🏆 Honors and Awards

• 2023.12: I receive the Outstanding Doctoral Dissertation of CESE.
• 2020.10: I receive the National Scholarship.
• 2022.10: I receive the National Scholarship.

🌍 Activities

• Invited talks: SPS webinar
• Technical Program Committee (TPC) for Conferences: VTC2024-Fall
• Co-Chair for Conferences: ICASSP2025
• Reviewer for Journals: JSAC, JSTSP, TSP, TWC, TCOM, TIFS, WC, CM, TVT, SJ, TGCN, SPL, WCL, CL
• Reviewer for Conferences: GLOBECOM, ICC, WCNC, WCSP, ICCC, ISWCS, ISACom, JC&S, PIMRC

👩‍🎓 Educations

• 2020.09 - 2023.09: Dalian University of Technology. Major in Information and Communication Engineering.
• 2014.09 - 2018.06: Dalian University of Technology. Major in Electronic and Information Engineering.

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