Fluid MIMO: A Timely MIMO Upgrade

Chenguang Rao; Kai-Kit Wong; Hyundong Shin; Ross Murch

doi:10.1016/j.eng.2026.08.018

Engineering ›› :202608018 DOI: 10.1016/j.eng.2026.08.018

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Fluid MIMO: A Timely MIMO Upgrade

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Chenguang Rao, Kai-Kit Wong, Hyundong Shin, Ross Murch. Fluid MIMO: A Timely MIMO Upgrade. Engineering 202608018 DOI:10.1016/j.eng.2026.08.018

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References

Publishing order | Descend order by publishing year | Descend order by cited within

[1]	Tariq F, Khandaker MRA, Wong KK, Imran MA, Bennis M, Debbah M . A speculative study on 6G. IEEE Wirel Commun 2020; 27(4): 118-25.

[2]	Saad W, Bennis M, Chen M . A vision of 6G wireless systems: applications, trends, technologies, and open research problems. IEEE Netw 2020; 34(3): 134—42.

[3]	Mahdi Azari M, Solanki S, Chatzinotas S, Kodheli O, Sallouha H, Colpaert A . Evolution of non—terrestrial networks from 5G to 6G: a survey. IEEE Commun Surv Tutor 2022; 24(4): 2633-72.

[4]	Liu F, Cui Y, Masouros C, Xu J, Han TX, Eldar YC, et al. Integrated sensing and communications: toward dual—functional wireless networks for 6G and beyond. IEEE J Sel Areas Commun 2022; 40(6): 1728—67.

[5]	Wu K, Bigdeli Y, Keivaan SA, Deng J, Burasa P . Integrated sensing and communication (ISAC) transceiver: hardware architectures, enabling technologies, and emerging trends. IEEE J Sel Top Electromagn Antennas Propag 2025; 1(1): 37-64.

[6]	Ghosh A, Wild T, Du JF, Tan J, Grudnitsky A, Chizhik D . A unified future: integrated sensing and communication (ISAC) in 6G. IEEE J Sel Top Electromagn Antennas Propag 2025; 1(1): 365-74.

[7]	Xu M, Du H, Niyato D, Kang J, Xiong Z, Mao S . Unleashing the power of edge—cloud generative AI in mobile networks: a survey of AIGC services. IEEE Commun Surv Tutorials 2024; 26(2): 1127—70.

[8]	Sharma M, Tomar A, Hazra A . Edge computing for Industry 5.0: fundamental, applications, and research challenges. IEEE Internet Things J 2024; 11(11): 19070—93.

[9]	Zhou H, Hu C, Yuan Y, Cui Y, Jin Y, Chen C, et al. Large language model (LLM) for telecommunications: a comprehensive survey on principles, key techniques, and opportunities. IEEE Commun Surv Tutorials 2025; 27(3): 1955.

[10]	Yang G, Pang Z, Jamal DM, Zhang YT, Lovell N . Homecare robotic systems for healthcare 4.0: visions and enabling technologies. IEEE J Biomed Health Inform 2020; 24(9): 2535—49.

[11]	Darvish K, Penco L, Ramos J, Cisneros R, Pratt J, Yoshida E, et al. Teleoperation of humanoid robots: a survey. IEEE Trans Robot 2023; 39(3): 1706-27.

[12]	Hadani R, Rakib S, Tsatsanis M, Monk A, Goldsmith AJ, Molisch AF . Orthogonal time frequency space modulation. In: Proceedings of the IEEE Wireless Communications and Networking Conference; 2017 Mar 19—22; San Francisco, CA, USA. New York City: IEEE; 2017. p. 1-6.

[13]	Lin H, Yuan J . Orthogonal delay—doppler division multiplexing modulation. IEEE Trans Wirel Commun 2022; 21(12): 11024—37.

[14]	Bemani A, Ksairi N, Kountouris M . Affine frequency division multiplexing for next generation wireless communications. IEEE Trans Wirel Commun 2023; 22(11): 8214-29.

[15]	Paulraj AJ, Kailath T, inventors. Increasing capacity in wireless broadcast systems using distributed transmission/directional reception. United States patent US 5345599; 1994 Sep 6.

[16]	Foschini GJ, Gans MJ . On limits of wireless communications in a fading environment when using multiple antennas. Wirel Pers Commun 1998; 6(3): 311-35.

[17]	Wang Z, Zhang J, Du H, Niyato D, Cui S, Ai B . A tutorial on extremely large—scale MIMO for 6G: fundamentals, signal processing, and applications. IEEE Commun Surv Tutorials 2024; 26(3): 1560-605.

[18]	Wong KK, Shojaeifard A, Tong KF, Zhang Y . Performance limits of fluid antenna systems. IEEE Commun Lett 2020; 24(11): 2469—72.

[19]	Wong KK, Shojaeifard A, Tong KF, Zhang Y . Fluid antenna systems. IEEE Trans Wirel Commun 2021; 20(3): 1950-62.

[20]	Shojaeifard A, Wong K, Tong KF, Chu Z, Mourad A, Haghighat A, et al. MIMO evolution beyond 5G through reconfigurable intelligent surfaces and fluid antenna systems. Proc IEEE 2022; 110(9): 1244-65.

[21]	New WK, Wong KK, Xu H, Wang C, Ghadi FR, Zhang J, et al. A tutorial on fluid antenna system for 6G networks: encompassing communication theory, optimization methods and hardware designs. IEEE Commun Surv Tutorials 2025; 27(4): 2325—77.

[22]	Lu WJ, He CX, Zhu Y, Tong KF, Wong KK, Shin H, et al. Fluid antennas: reshaping intrinsic properties for flexible radiation characteristics in intelligent wireless networks. IEEE Commun Mag 2025; 63(5): 40-5.

[23]	Hong H, Wong KK, Chae CB, Xu H, Guo X, Ghadi FR, et al. A contemporary survey on fluid antenna systems: fundamentals and networking perspectives. IEEE Trans Netw Sci Eng 2026; 13: 2305-28.

[24]	New WK, Wong KK, Wang C, Chae CB, Murch R, Jafarkhani H . Fluid antenna systems: redefining reconfigurable wireless communications. IEEE J Sel Areas Commun 2026; 44: 1013-44.

[25]	Wu T, Zhi K, Yao J, Lai X, Zheng J, Niu H . Fluid antenna systems enabling 6G. IEEE Wirel Commun 2026; 4: 100-8.

[26]	Hong H, Wong KK, Waqar N, Zhu X, Rao C, Zhang W, et al. Fluid antenna multiple access for 6G: a holistic review. IEEE Open J Commun Soc 2026; 7: 2607-33.

[27]	Zhu L, Wong KK . Historical review of fluid antenna and movable antenna. 2024. arXiv:2401.02362.

[28]	Shen Y, Tang B, Gao S, Tong KF, Wong H, Wong KK, et al. Design and experimental validation of mmWave surface wave enabled fluid antennas. IEEE Antennas Wirel Propag Lett 2026; 25(4): 1467—71.

[29]	Wang R, Zheng P, Varma Kotte V, Rauf S, Yang Y, Mahboob Ur Rahman M, et al. Electromagnetically reconfigurable fluid antenna system. IEEE J Sel Areas Commun 2026; 44: 1464-79.

[30]	Zhang J, Rao J, Li Z, Ming Z, Chiu CY, Wong KK, et al. A novel pixel—based reconfigurable antenna applied in fluid antenna systems. IEEE Open J Antennas Propag 2025; 6(1): 212-28.

[31]	Liu B, Wu T, Wong KK, Wong H, Tong KF . Wideband pixelbased fluid antenna system: an antenna design for smart city. IEEE Internet Things J 2026; 13(4): 6850-62.

[32]	Wong KK, Wang C, Chae CB, Murch R . Reconfigurable pixel antennas meet fluid antenna systems: a paradigm shift to electromagnetic signal and information processing. IEEE Wirel Commun 2026; 33(1): 191-8.

[33]	Liu B, Tong KF, Wong KK, Chae CB, Wong H . Programmable meta—fluid antenna for spatial multiplexing in fast fluctuating radio channels. Opt Express 2025; 33(13): 28898-915.

[34]	Zhang S, Zhang Y, Hashida H, Eldar YC, Di Renzo M, Di B . Fluid antenna systems enabled by reconfigurable holographic surfaces: beamforming design and experimental validation. IEEE J Sel Areas Commun 2026; 44: 1417—31.

[35]	Tong KF, Liu B, Wong KK . Designs and challenges in fluid antenna system hardware. Electronics 2025; 14(7): 1458.

[36]	New WK, Wong KK, Xu H, Tong KF, Chae CB . An information—theoretic characterization of MIMO—FAS: optimization, diversity—multiplexing tradeoff and q—outage capacity. IEEE Trans Wirel Commun 2024; 23(6): 5541-56.

[37]	Chen Y, Chen M, Xu H, Yang Z, Wong KK, Zhang Z . Joint beamforming and antenna design for near—field fluid antenna system. IEEE Wirel Commun Lett 2025; 14(2): 415-9.

[38]	Qin H, Chen W, Li Z, Wu Q, Cheng N, Chen F . Antenna positioning and beamforming design for fluid antenna—assisted multi—user downlink communications. IEEE Wirel Commun Lett 2024; 13(4): 1073—7.

[39]	Li S, Chen J, Ren S, Deng B, Wang J, Wang J . Low—complexity secure beamforming with fluid antenna assisted MU—MISO system. IEEE Trans Inf Forensics Secur 2025; 20: 12356-71.

[40]	Liao T, Guo W, He H, Song S, Zhang J, Letaief KB . Joint beamforming and antenna position optimization for fluid antenna—assisted MU—MIMO networks. IEEE J Sel Areas Commun 2026; 44: 1209-26.

[41]	Yao J, Wu T, Zhou L, Jin M, Pan C, Elkashlan M, et al. Rethinking hardware impairments in multi—user systems: can FAS make a difference? IEEE Trans Mobile Comput 2026; 25(4): 4965-78.

[42]	Wong KK, Chae CB, Tong KF . Compact ultra massive antenna array: a simple open—loop massive connectivity scheme. IEEE Trans Wirel Commun 2024; 23(6): 6279-94.

[43]	Rao C, Wong K, Hamza Naim Shaikh M, Hong H, Shin H, Zhang Y . Geometric port selection in CUMA systems. 2025. arXiv:2509.20299.

[44]	Lu J, Zhang J, Han Y, Wang J, Jin S, Wong KK, et al. Compact ultra massive antenna arrays under mutual coupling: modeling and spectral efficiency analysis. IEEE Trans Commun 2026; 74: 3174-89.

[45]	Rao C, Wong KK, Zhang Y, Chae CB . CUMA uplink for interference—resilient multi—cell networks. IEEE Wirel Commun Lett 2026; 15: 2249—53.

[46]	Wong KK, Tong KF . Fluid antenna multiple access. IEEE Trans Wirel Commun 2022; 21(7): 4801—15.

[47]	Wong KK, Tong KF, Chen Y, Zhang Y . Fast fluid antenna multiple access enabling massive connectivity. IEEE Commun Lett 2023; 27(2): 711—5.

[48]	Wong KK, Morales—Jimenez D, Tong KF, Chae CB . Slow fluid antenna multiple access. IEEE Trans Commun 2023; 71(5): 2831—46.

[49]	Peng Q, Wang J, Wang S, Xia L, Wang Q, Ding H . Fluid antenna multiple access at transmitter side. In: Proceedings of the IEEE International Conference on Communications Workshops; 2025 Jun 8—12; Montreal, QC, Canada. New York City: IEEE; 2025. p. 160—65.

[50]	Chen JC, Chueh SY, Wong KK . Joint optimization of beamforming and antenna configurations in heterogeneous FAS—assisted MUMISO downlink systems. IEEE Trans Veh Technol 2026; 75(5): 8003-17.

[51]	Wu T, Tian Y, Tang J, Zhi K, Elkashlan M, Tong KF, et al. Scalable Fluid Antenna Systems: a new paradigm for array signal processing. 2025. arXiv:2508.10831.

[52]	Ye Y, You L, Wang J, Xu H, Wong KK, Gao X . Fluid antenna—assisted MIMO transmission exploiting statistical CSI. IEEE Commun Lett 2024; 28(1): 223-7.

[53]	Rao C, Wong KK, Xu S, Zhu X, Zhang Y, Chae CB . Codebook—based port selection and combining for CSI—free uplink fluid antenna multiple access. IEEE Trans Wirel Commun 2026; 25: 13401-15.

[54]	Xu H, Zhou G, Wong KK, New WK, Wang C, Chae CB, et al. Channel estimation for FAS—assisted multiuser mmWave systems. IEEE Commun Lett 2024; 28(3): 632-6.

[55]	Zhang Z, Zhu J, Dai L, Heath RW . Successive Bayesian reconstructor for channel estimation in fluid antenna systems. IEEE Trans Wirel Commun 2025; 24(3): 1992-2006.