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Academic Papers about pCell® Technology

(Academia refers to pCell Technology as “Cell-free Massive MIMO”)

  1. A. Forenza, S. Perlman, F. Saibi, M. Di Dio, R. van der Laan and G. Caire, "Achieving large multiplexing gain in distributed antenna systems via cooperation with pCell technology," 2015 49th Asilomar Conference on Signals, Systems and Computers, 2015, pp. 286-293, doi: 10.1109/ACSSC.2015.7421132.
  2. E. Nayebi, A. Ashikhmin, T. L. Marzetta and H. Yang, "Cell-Free Massive MIMO systems," 2015 49th Asilomar Conference on Signals, Systems and Computers, 2015, pp. 695-699, doi: 10.1109/ACSSC.2015.7421222.
  3. H. Q. Ngo, A. Ashikhmin, H. Yang, E. G. Larsson and T. L. Marzetta, "Correction to “Cell-Free Massive MIMO Versus Small Cells” [Mar 17 1834-1850]," in IEEE Transactions on Wireless Communications, vol. 19, no. 5, pp. 3623-3624, May 2020, doi: 10.1109/TWC.2020.2974209.
  4. Hu, Yeqing, et al., “Distributed FD-MIMO: Cellular Evolution for 5G and Beyond”, March 16, 2017, Samsung Research. https://arxiv.org/pdf/1704.00647.pdf
  5. E. Nayebi, A. Ashikhmin, T. L.Marzetta, H. Yang and B. D. Rao, "Precoding and Power Optimization in Cell-Free Massive MIMO Systems," in IEEE Transactions on Wireless Communications, vol. 16, no. 7, pp. 4445-4459, July 2017, doi:10.1109/TWC.2017.2698449.
  6. S. Buzzi and C. D’Andrea,"Cell-Free Massive MIMO: User-Centric Approach," in IEEE Wireless Communications Letters, vol. 6, no. 6, pp. 706-709, Dec. 2017, doi:10.1109/LWC.2017.2734893
  7. G. Caire, "On the Ergodic Rate Lower Bounds With Applications to Massive MIMO," in IEEE Transactions on Wireless Communications, vol. 17, no. 5, pp.3258-3268, May 2018, doi: 10.1109/TWC.2018.2808522. https://doi.org/10.1109/TWC.2018.2808522
  8. Nayebi, E. (2018). TDD Massive MIMO Systems: Channel Estimation, Power Optimization, and Access Point Location Design. UC San Diego. ProQuest ID: Nayebi_ucsd_0033D_17034. Merritt ID: ark:/13030/m5130pwn. Retrieved from https://escholarship.org/uc/item/8843p6d8.
  9. T. M. Hoang, H. Q. Ngo, T. Q. Duong, H. D. Tuan and A. Marshall, "Cell-Free Massive MIMO Networks: Optimal Power Control Against Active Eavesdropping," in IEEE Transactions on Communications, vol. 66, no. 10, pp. 4724-4737,Oct. 2018, doi: 10.1109/TCOMM.2018.2837132.
  10. Ullah, S.M.S., Mahyiddin, W.A.,Zakaria, N.A. et al., "Training Size Optimization with Reduced Complexity in Cell-Free Massive MIMO System. Wireless Networks, 25, 1983–1994(2019), https://doi.org/10.1007/s11276-018-1791-3
  11. S. Kim and B. Shim, "FDD-Based Cell-Free Massive MIMO Systems," 2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), 2018, pp. 1-5, doi:10.1109/SPAWC.2018.8446023
  12. P. Parida, H. S. Dhillon and A. F. Molisch, "Downlink Performance Analysis of Cell-Free Massive MIMO with Finite Fronthaul Capacity," 2018 IEEE 88th Vehicular Technology Conference(VTC-Fall), 2018, pp. 1-6, doi: 10.1109/VTCFall.2018.8690797.
  13. G. Interdonato, M. Karlsson, E.Bjornson and E. G. Larsson, "Downlink Spectral Efficiency of Cell-Free Massive MIMO with Full-Pilot Zero-Forcing," 2018 IEEE Global Conference on Signal and Information Processing (GlobalSIP), 2018, pp. 1003-1007, doi: 10.1109/GlobalSIP.2018.8646666.
  14. H. Q. Ngo, H. Tataria, M. Matthaiou, S. Jin and E. G. Larsson, "On the Performance of Cell-Free Massive MIMO in Ricean Fading," 2018 52nd Asilomar Conference on Signals, Systems, and Computers, 2018, pp. 980-984, doi: 10.1109/ACSSC.2018.8645336.
  15. F. Riera-Palou, G. Femenias, A. G. Armada and A. Pérez-Neira, "Clustered Cell-Free Massive MIMO," 2018 IEEE Globecom Workshops (GC Wkshps), 2018, pp. 1-6, doi:10.1109/GLOCOMW.2018.8644255.
  16. M. Attarifar, A. Abbasfar and A. Lozano, "Modified Conjugate Beamforming for Cell-Free Massive MIMO," in IEEE Wireless Communications Letters, vol. 8, no. 2, pp. 616-619, April 2019, doi: 10.1109/LWC.2018.2890470.
  17. G. Femenias and F. Riera-Palou, "Cell-Free Millimeter-Wave Massive MIMO Systems With Limited Fronthaul Capacity," in IEEE Access, vol. 7, pp. 44596-44612, 2019, doi:10.1109/ACCESS.2019.2908688.
  18. G. Interdonato, P. Frenger and E. G. Larsson, "Scalability Aspects of Cell-Free Massive MIMO," ICC 2019 -2019 IEEE International Conference on Communications (ICC), 2019, pp. 1-6, doi: 10.1109/ICC.2019.8761828.
  19. R. Nikbakht and A. Lozano, "Uplink Fractional Power Control for Cell-Free Wireless Networks," ICC 2019 -2019 IEEE International Conference on Communications (ICC), 2019, pp. 1-5, doi: 10.1109/ICC.2019.8761096.
  20. Emil Björnson, Luca Sanguinetti, Henk Wymeersch, Jakob Hoydis, Thomas L. Marzetta, “Massive MIMO is a Reality—What is Next?: Five Promising Research Directions for Antenna Arrays," Digital Signal Processing, Volume 94, 2019, Pages 3-20, ISSN 1051-2004, https://doi.org/10.1016/j.dsp.2019.06.007.
  21. E. Björnson and L. Sanguinetti, "A New Look at Cell-Free Massive MIMO: Making It Practical With Dynamic Cooperation," 2019 IEEE 30th Annual International Symposium on Personal, Indoorand Mobile Radio Communications (PIMRC), 2019, pp. 1-6, doi:10.1109/PIMRC.2019.8904101.
  22. Palacios, Jorge Morte, "Cell-free Multi-user Massive MIMO Under Channel Non-reciprocity," July 1, 2019, Tampere University, https://urn.fi/URN:NBN:fi:tuni-201908012800
  23. D. Maryopi, M. Bashar and A. Burr, "On the Uplink Throughput of Zero Forcing in Cell-Free Massive MIMO with Coarse Quantization," in IEEE Transactions on Vehicular Technology, vol. 68, no. 7, pp. 7220-7224, July 2019, doi: 10.1109/TVT.2019.2920070.
  24. M. Bashar, K. Cumanan, A. G. Burr, H.Q. Ngo, E. G. Larsson and P. Xiao, "On the Energy Efficiency of Limited-Backhaul Cell-Free Massive MIMO," ICC 2019 - 2019 IEEE International Conference on Communications (ICC), 2019, pp. 1-7, doi:10.1109/ICC.2019.8761134.
  25. M. Bashar, K. Cumanan, A. G. Burr, H.Q. Ngo, M. Debbah and P. Xiao, "Max–Min Rate of Cell-Free Massive MIMO Uplink With Optimal Uniform Quantization," in IEEE Transactions on Communications, vol. 67, no. 10, pp. 6796-6815, Oct. 2019, doi:10.1109/TCOMM.2019.2926706.
  26. M. Bashar, K. Cumanan, A. G. Burr, H.Q. Ngo, L. Hanzo and P. Xiao, "NOMA/OMA Mode Selection-Based Cell-Free Massive MIMO," ICC 2019 - 2019 IEEE International Conference on Communications(ICC), 2019, pp. 1-6, doi: 10.1109/ICC.2019.8761072.
  27. J. Zhang, S. Chen, Y. Lin, J. Zheng, B. Ai and L. Hanzo, "Cell-Free Massive MIMO: A New Next-Generation Paradigm," in IEEE Access, vol. 7, pp. 99878-99888, 2019, doi:10.1109/ACCESS.2019.2930208.
  28. M. Bashar, K. Cumanan, A. G. Burr, H.Q. Ngo, E. G. Larsson and P. Xiao, "Energy Efficiency of the Cell-Free Massive MIMO Uplink With Optimal Uniform Quantization," in IEEE Transactions on Green Communications and Networking, vol. 3, no. 4, pp. 971-987, Dec. 2019, doi: 10.1109/TGCN.2019.2932071.
  29. Interdonato, G., Björnson, E., Quoc Ngo, H. et al., "Ubiquitous cell-free Massive MIMO communications," J Wireless Com Network 2019, 197 (2019), https://doi.org/10.1186/s13638-019-1507-0
  30. E. Björnson and L. Sanguinetti,"Making Cell-Free Massive MIMO Competitive With MMSE Processing and Centralized Implementation," in IEEE Transactions on Wireless Communications, vol. 19,no. 1, pp. 77-90, Jan. 2020, doi: 10.1109/TWC.2019.2941478.
  31. M. Bashar, K. Cumanan, A. G. Burr, H.Q. Ngo, L. Hanzo and P. Xiao, "On the Performance of Cell-Free Massive MIMO Relying on Adaptive NOMA/OMA Mode-Switching," in IEEE Transactions on Communications, vol. 68, no. 2, pp. 792-810, Feb.2020, doi: 10.1109/TCOMM.2019.2952574.
  32. C. D’Andrea, A. Garcia-Rodriguez, G. Geraci, L. G. Giordano and S. Buzzi, "Analysis of UAV Communications in Cell-Free Massive MIMO Systems," in IEEE Open Journal of the Communications Society, vol.1, pp. 133-147, 2020, doi: 10.1109/OJCOMS.2020.2964983.
  33. A. Abdallah and M. M. Mansour, "Efficient Angle-Domain Processing for FDD-Based Cell-Free Massive MIMO Systems," in IEEE Transactions on Communications, vol. 68, no. 4, pp. 2188-2203, April 2020, doi: 10.1109/TCOMM.2020.2969351.
  34. Dierks, S., Kramer, G., Panzner, B. et al., "Information Rates of Precoding for Massive MIMO and Base Station Cooperation in an Indoor Scenario," J Wireless Com Network 2020, 22(2020), https://doi.org/10.1186/s13638-019-1636-5.
  35. R. Nikbakht, R. Mosayebi and A. Lozano, "Uplink Fractional Power Control and Downlink Power Allocation for Cell-Free Networks," in IEEE Wireless Communications Letters, vol. 9, no. 6,pp. 774-777, June 2020, doi: 10.1109/LWC.2020.2969404.
  36. Zhang, Peng, and Frans M. .Willems. 2020. "On the Downlink Capacity of Cell-Free Massive MIMO with Constrained Fronthaul Capacity," Entropy 22, no. 4: 418, https://doi.org/10.3390/e22040418.
  37. M. Attarifar, A. Abbasfar and A. Lozano, "Subset MMSE Receivers for Cell-Free Networks," in IEEETransactions on Wireless Communications, vol. 19, no. 6, pp.4183-4194, June 2020, doi: 10.1109/TWC.2020.2980820.
  38. T. X. Vu, S. Chatzinotas, S. Shahbaz Panahi and B. Ottersten, "Joint Power Allocation and Access Point Selection for Cell-free Massive MIMO," ICC 2020 - 2020 IEEE International Conference on Communications(ICC), 2020, pp. 1-6, doi: 10.1109/ICC40277.2020.9148948.
  39. S. Chen, J. Zhang, E. Björnson, J. Zhang, B. Ai, "Structured Massive Access for Scalable Cell-Free Massive MIMO Systems," June 18, 2020, doi.org/10.48550/arXiv.2006.10275.
  40. E. Björnson and L. Sanguinetti, "Scalable Cell-Free Massive MIMO Systems," in IEEETransactions on Communications, vol. 68, no. 7, pp. 4247-4261, July 2020, doi: 10.1109/TCOMM.2020.2987311.
  41. J. Zheng, J. Zhang, E. Björnson and B. Ai, "Cell-Free Massive MIMO with Channel Aging and Pilot Contamination," August 25, 2020, doi.org/10.48550/arXiv.2008.10827.
  42. Palhares, V.M., de Lamare, R.C., Flores, A.R. and Landau, L.T. (2020), "Iterative AP Selection, MMSE Pre-coding and Power Allocation in Cell-free Massive MIMO Systems," IET Communications, 14:3996-4006. https://doi.org/10.1049/iet-com.2020.0627.
  43. T. Van Chien, E. Björnson and E. G. Larsson, "Joint Power Allocation and LoadBalancing Optimization for Energy-Efficient Cell-Free Massive MIMO Networks," in IEEE Transactions on Wireless Communications, vol. 19, no. 10, pp. 6798-6812, Oct. 2020, doi: 10.1109/TWC.2020.3006083.
  44. M. Bashar et al., "Exploiting Deep Learning in Limited-Fronthaul Cell-Free Massive MIMO Uplink," in IEEE Journal on Selected Areas in Communications, vol. 38, no. 8, pp.1678-1697, Aug. 2020, doi: 10.1109/JSAC.2020.3000812.
  45. M. Bashar, K. Cumanan, A. G. Burr, M. Debbah and H. Q. Ngo, "On the Uplink Max–Min SINR of Cell-Free Massive MIMO Systems," in IEEE Transactions on Wireless Communications, vol. 18,no. 4, pp. 2021-2036, April 2019, doi: 10.1109/TWC.2019.2892463.
  46. M. Bashar et al., "Deep Learning-Aided Finite-Capacity Fronthaul Cell-Free Massive MIMO with Zero Forcing," ICC2020 - 2020 IEEE International Conference on Communications (ICC),2020, pp. 1-6, doi: 10.1109/ICC40277.2020.9149210.
  47. Z. Wang, J. Zhang, E. Björnson and B. Ai, "Uplink Performance of Cell-Free Massive MIMO Over Spatially Correlated Rician Fading Channels," in IEEE Communications Letters, vol. 25, no. 4, pp. 1348-1352, April 2021, doi: 10.1109/LCOMM.2020.3041899.
  48. G. Interdonato, "Cell-Free Massive MIMO : Scalability, Signal Processing and Power Control," PhD dissertation, Linköping University Electronic Press, Linköping, 2020, https://doi.org/10.3384/diss.diva-167218.
  49. M. Bashar et al., "Uplink Spectral and Energy Efficiency of Cell-Free Massive MIMO With Optimal Uniform Quantization," in IEEE Transactions on Communications, vol. 69, no. 1, pp. 223-245, Jan. 2021, doi: 10.1109/TCOMM.2020.3028305.
  50. M.Farooq, M. Juntti and L. -N. Tran, "Power Control for Multigroup Multicast Cell-Free Massive MIMO Downlink: Invited Paper," 2021 29th European Signal Processing Conference (EUSIPCO), January 23, 2021, pp. 930-934, doi: 10.23919/EUSIPCO54536.2021.9615937.
  51. Xia, X., Zhu, P., Li, J. et al. "Joint Optimization of Spectral Efficiency for Cell-free Massive MIMO with Network-assisted Full Duplexing," Sci. China Inf. Sci. 64, 182311 (2021), https://doi.org/10.1007/s11432-020-3139-9.
  52. T. K. Nguyen, H. H. Nguyen and H. D.Tuan, "Max-Min QoS Power Control in Generalized Cell-Free Massive MIMO-NOMA With Optimal Backhaul Combining," in IEEE Transactions on Vehicular Technology, vol. 69, no. 10, pp. 10949-10964, Oct. 2020, doi:10.1109/TVT.2020.3006054.
  53. C. F. Mendoza, S. Schwarz and M. Rupp, "Cluster Formation in Scalable Cell-free Massive MIMO Networks," 2020 16th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob), 2020, pp. 62-67, doi:10.1109/WiMob50308.2020.9253391.
  54. Zheng, j., Zhang, J., Bo, A., "UAV Communications with WPT-aided Cell-Free Massive MIMO Systems," in IEEE Journal on Selected Areas of Communications, vol. 20,no. 3, pp. 1756-1769, March 2021, doi: 10.1109/TWC.2020.3036281.
  55. Ö. T. Demir and E. Björnson, "Joint Power Control and LSFD for Wireless-Powered Cell-Free Massive MIMO," in IEEE Transactions on Wireless Communications, April 23, 2021, doi.org/10.48550/arXiv.2104.11513.
  56. Özlem Tugfe Demir, Emil Björnson and Luca Sanguinetti (2021), "Foundations of User-Centric Cell-Free Massive MIMO," Foundations and Trends in Signal Processing: Vol. 14: No.3-4, pp 162-472. http://dx.doi.org/10.1561/2000000109.
  57. G. Interdonato, H. Q. Ngo and E. G. Larsson, "Enhanced Normalized Conjugate Beamforming for Cell-Free Massive MIMO," in IEEE Transactions on Communications, vol. 69, no. 5, pp. 2863-2877, May 2021, doi: 10.1109/TCOMM.2021.3055522.
  58. L. Du, L. Li, H. Q. Ngo, T. C. Mai and M. Matthaiou, "Cell-Free Massive MIMO: Joint Maximum-Ratio and Zero-Forcing Precoder With Power Control," in IEEE Transactions onCommunications, vol. 69, no. 6, pp. 3741-3756, June 2021, doi:10.1109/TCOMM.2021.3059300.
  59. M. M. Mojahedian, R. Mosayebi and A.Lozano, "Pseudo-Inverse vs Generalized Inverse for C-RAN Downlink Precoding," GLOBECOM2020 - 2020 IEEE Global Communications Conference, 2020, pp. 1-6, doi: 10.1109/GLOBECOM42002.2020.9348123.
  60. Ding, Jie; Homssi, Bassel Al; Choi, Jinho (2021), “Analytic Modeling for Grant-Free Transmission in Cell-Free Massive MIMO: A Stochastic Geometry Approach”. TechRxiv. Preprint. https://doi.org/10.36227/techrxiv.16566201.v1.
  61. Zhou, Meng, Yao Zhang, Xu Qiao, Weiqiang Tan, and Longxiang Yang. 2021. "Analysis and Optimization for Downlink Cell-Free Massive MIMO System with Mixed DACs" Sensors 21, no. 8: 2624. https://doi.org/10.3390/s21082624.
  62. Khanh, Le Ty, et al., "Deep Learning for Uplink Spectral Efficiency in Cell-Free Massive MIMO System", Journal of Advances in Information Technology Vol. 12, No. 2, May 2021, DOI: 10.12720/jait.
  63. Geraci, Giovanni, et al., "What Will the Future of UAV Cellular Communications Be? A Flight from 5G to 6G", May 1, 2021, https://doi.org/10.48550/arXiv.2105.04842.
  64. Priyabrata Parida and Harpreet S. Dhillon, “Pilot Assignment Schemes for Cell-Free Massive MIMO Systems”, May 20,2021, doi.org/10.48550/arXiv.2105.09505.
  65. M. Y. Abdelsadek, H. Yanikomeroglu andG. K. Kurt, "Future Ultra-Dense LEO Satellite Networks: A Cell-Free Massive MIMO Approach," 2021 IEEE International Conference onCommunications Workshops (ICC Workshops), 2021, pp. 1-6, doi:10.1109/ICCWorkshops50388.2021.9473753.
  66. Datta, Soumyadeep (2021): “Full-Duplex Cell-Free mMIMO Systems: Analysis and Decentralized Optimization," June 21, 2021, TechRxiv, Preprint, doi.org/10.36227/techrxiv.14805216.v1.
  67. M. Farooq, H. Q. Ngo, E. K. Hong and L. N. Tran, "Utility Maximization for Large-Scale Cell-Free Massive MIMO Downlink," in IEEE Transactions on Communications, vol. 69, no. 10, pp. 7050-7062, Oct. 2021, doi: 10.1109/TCOMM.2021.3097718.
  68. X. Zhang, T. Liang, K. An, G. Zheng and S. Chatzinotas, "Secure Transmission in Cell-Free Massive MIMO With RF Impairments and Low-Resolution ADCs/DACs," in IEEE Transactions on VehicularTechnology, vol. 70, no. 9, pp. 8937-8949, Sept. 2021, doi:10.1109/TVT.2021.3098693.
  69. A. K. Papazafeiropoulos, E. Björnson, P. Kourtessis, S. Chatzinotas and J. M. Senior, "Scalable Cell-Free Massive MIMO Systems With Hardware Impairments," 2020 IEEE31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications, 2020, pp. 1-7, doi: 10.1109/PIMRC48278.2020.9217151.
  70. Mahmoud Zaher, Özlem Tuğfe Demir, Emil Björnson, Marina Petrova, “Learning-Based Downlink Power Allocation in Cell-Free Massive MIMO Systems”, September 7, 2021, doi.org/10.48550/arXiv.2109.03128.
  71. H. Yang, "Cell-Free Massive MIMO in LoS," 2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), 2021, pp. 672-677, September 13, 2021, doi: 10.1109/PIMRC50174.2021.9569416.
  72. J. Zhang, J. Zhang, E. Björnson and B. Ai, "Local Partial Zero-Forcing Combining for Cell-Free Massive MIMO Systems," in IEEE Transactions on Communications, vol. 69, no. 12, pp. 8459-8473, Dec. 2021, doi: 10.1109/TCOMM.2021.3110214.
  73. Tongzhou Han, Danfeng Zhao, “Downlink channel estimation in FDD cell-free massive MIMO”, Physical Communication, Volume 52, 2022, 101614, ISSN 1874-4907, doi.org/10.1016/j.phycom.2022.101614.
  74. Obakhena, H.I., Imoize, A.L., Anyasi, F.I. et al. Application of Cell-free Massive MIMO in 5G and Beyond 5G Wireless Networks: a Survey. J. Eng. Appl. Sci. 68, 13 (2021), https://doi.org/10.1186/s44147-021-00014-y
  75. Amadid, Jamal, et al., "On Channel Estimation in Cell-Free Massive MIMO for Spatially Correlated Channels with Correlated Shadowing under Rician Fading", October 14, 2021, doi:10.1002/dac.5011.
  76. J. Zheng, J. Zhang, E. Björnson and B. Ai, "Impact of Channel Aging on Cell-Free Massive MIMO Over Spatially Correlated Channels," in IEEE Transactions on Wireless Communications, vol. 20, no. 10, pp. 6451-6466, Oct. 2021, doi: 10.1109/TWC.2021.3074421.
  77. Zhang, Y., Zhang, J., Jin, Y., Buzzi, S., Ai, B., "Deep Learning-Based Power Control for Uplink Cell-Free Massive MIMO Systems", IEEE Globecom 2021, October 18, 2021, doi.org/10.48550/arXiv.2110.09001.
  78. Han, Tongzhou, and Danfeng Zhao. 2021. "The Downlink Performance for Cell-Free Massive MIMO with Instantaneous CSI in Slowly Time-Varying Channels," Entropy 23, no. 11: 1552, https://doi.org/10.3390/e23111552.
  79. L. Miretti, E. Björnson and D. Gesbert, "Team MMSE Precoding with Applications to Cell-free Massive MIMO," November 2, 2021, in IEEE Transactions on Wireless Communications,doi: 10.1109/TWC.2022.3147895.
  80. J. Zhang, J. Zhang, D. W. K. Ng, S. Jin and B. Ai, "Improving Sum-Rate of Cell-Free Massive MIMO With Expanded Compute-and-Forward," in IEEE Transactions on Signal Processing, vol. 70, pp. 202-215, 2022, November 19, 2021, doi: 10.1109/TSP.2021.3129337.
  81. Amadid, J., Boulouird, M., Belhabib, A. et al. “On Channel Estimation for Rician Fading with the Phase-Shift in Cell-Free Massive MIMO System," November 21, 2021, Wireless Pers Commun (2021), doi.org/10.1007/s11277-021-09436-6.
  82. He, Hangtao, et al., “Cell-Free Massive MIMO Detection - A Distributed Expectation Propagation Approach”, November 28, 2021, doi: 10.48550/arXiv.2111.14022.
  83. Shuaifei Chen, Jiayi Zhang, Jing Zhang, Emil Björnson, Bo Ai, "A Survey on User-centric Cell-free Massive MIMO Systems", Digital Communications and Networks, December 30, 2021, ISSN 2352-8648, https://doi.org/10.1016/j.dcan.2021.12.005.
  84. Guangyao Peng et al, "Application of Deep Learning in Wireless Networks for Channel Estimation: A Survey", 2022 J.Phys.: Conf. Ser. 2203, doi:10.1088/1742-6596/2203/1/012044.
  85. He, Hangtao, et al., "Cell-Free Massive MIMO for 6G Wireless Communication Networks", December 1, 2021, doi: 10.48550/arXiv.2100.07309.
  86. H. Yu, X. Yi and G. Caire, "Topological Pilot Assignment in Cell-Free Massive MIMO Networks," 2021 IEEE Global Communications Conference (GLOBECOM), 2021, pp. 1-6, doi: 10.1109/GLOBECOM46510.2021.9685876.
  87. Ammar, Hussein A., et al.,"User-centric Cell-free Massive MIMO Networks - A Survey of Opportunities, Challenges and Solutions", December 10, 2021, doi: 10.48550/arXiv.2104.14589.
  88. Gholami, Roya, "Cell-Free Massive MIMO Receiver Design and Channel Estimation", December 17, 2021, Eurecom, eurecom.fr/index.php/en/publication/6644.
  89. Omid Abbasi and Halim Yanikomeroglu, “UxNB-Enabled Cell-Free Massive MIMO with HAPS-Assisted Sub-THz Backhauling”, January 19, 2022, doi.org/10.48550/arXiv.2201.07379.
  90. Mai, Trang C., et al., "Energy Efficiency Maximization in Large-Scale Cell-Free Massive MIMO - A Projected Gradient Approach", January 20, 2022, doi: 10.48550/arXiv.2201.08136.
  91. Zheng, J., Zhang, J., Ai, B., "Team-Optimal MMSE Combining for Cell-Free Massive MIMO Systems," IEEE ICC 2022, January 24, 2022, doi.org/10.48550/arXiv.2201.09618.
  92. Shi, E., Zhang, J., Chen, S., Zheng, J., Zhang, Y., Ng, D. W. K., Ai, B., "Uplink Performance of High-Mobility Cell-Free Massive MIMO-OFDM Systems," IEEE ICC 2022, January 24, 2022, doi.org/10.48550/arXiv.2201.09622.
  93. Zheng, J., Zhang, J., Shi, E., Jiang, J., Ai, B., "Wireless Energy Transfer in RIS-Aided Cell-Free Massive MIMO Systems: Opportunities and Challenges," IEEE ComMag, January 27, 2022, doi.org/10.48550/arXiv.2201.11302.
  94. Wang, Z., Zhang, J., Ngo, H. Q., Ai, B., Debbah, M., "Iteratively Weighted MMSE Uplink Precoding for Cell-Free Massive MIMO," IEEE ICC 2022, January 27, 2022, doi.org/10.48550/arXiv.2201.11299.
  95. Yunlu Xiao, Petri Mähönen, Ljiljana Simić, “Mobility Performance Analysis of Scalable Cell-Free Massive MIMO”, February 3, 2022, doi.org/10.48550/arXiv.2202.01488.
  96. Han, Tongzhou, and Danfeng Zhao. 2022. "Energy Efficiency of User-Centric, Cell-Free Massive MIMO-OFDM with Instantaneous CSI," Entropy 24, no. 2: 234, doi.org/10.3390/e24020234.
  97. Giovanni Interdonato, S. Buzzi, “The Promising Marriage of Mobile Edge Computing and Cell-Free Massive MIMO," February 15, 2022, Paper accepted for presentation in IEEE ICC 2022, doi.org/10.48550/arXiv.2202.07775.
  98. Özlem Tuğfe Demir and Meysam Masoudi and Emil Björnson and Cicek Cavdar, “Cell-Free Massive MIMO in Virtualized CRAN: How to Minimize the Total Network Power?" February 18, 2022, doi.org/10.48550/arXiv.2202.09254.
  99. Priyabrata Parida and Harpreet S. Dhillon, “Cell-Free Massive MIMO with Finite Fronthaul Capacity: A Stochastic Geometry Perspective," February 21, 2022, doi.org/10.48550/arXiv.2202.10542.
  100. Zheng, J., Zhang, J., Björnson, E., Li, Z., Ai, B., "Cell-Free Massive MIMO-OFDM for High-Speed Train Communications," IEEE Journal on Selected Areas in Communications, March 5, 2022, doi.org/10.48550/arXiv.2205.02733.
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