راهکارهای زیرساختی عملیِ امیدبخش برای نسل ششم (6G) مبتنی بر سطوح هوشمند قابل پیکربندی (RIS) و شبکه MIMO انبوه بدون سلول بندی

[1] Rajatheva, I. Atzeni, S. Bicais, E. Bjornson, A. Bourdoux, S. Buzzi, C. D’Andrea, J.-B. Dore, S. Erkucuk, M. Fuentes, et al., “Scoring the terabit/s goal: Broadband connectivity in 6G”, arXiv preprint arXiv:2008.07220, 2020.

[2] I. F. Akyildiz, A. Kak, S. Nie, "6G and beyond: The future of wireless communications systems", IEEE Access , vol.8 , pp.133995–134030, 2020.

[3] E. Björnson, L. Sanguinetti, "Making cell-free massive mimo competitive with mmse processing and centralized implementation", IEEE Transactions on Wireless Communications, vol.19, pp. 77-90, 2019.

[4] A. M. Saray, J. Pourrostam, "Spectral efficiency analysis and optimal power allocation for uplink multi-user cell-free massive mimo networks employing stbcs", Computer Communications, vol. 170, pp. 42–49, 2021

[5] H. Q. Ngo, A. Ashikhmin, H. Yang, E. G. Larsson, T. L. Marzetta, "Cellfree massive mimo versus small cells", IEEE Transactions on Wireless Communications , vol.16, pp.1834–1850, 2017

[6] A. M. Saray, J. Pourrostam, S. H. Mousavi, M. M. Feghhi, "A lowcomplexity space time block codes detection for cell free massive mimo systems", in: 2020 28th Iranian Conference on Electrical Engineering (ICEE), IEEE, pp. 1–5, 2020.

[7] A. M. Saray, A. Ebrahimi, "Max-min power control of cell free massive mimo system employing deep learning", in: 2022 4th West Asian Symposium on Optical and Millimeter-wave Wireless Communications (WASOWC), IEEE, pp. 1–4, 2022.

[8] S. Buzzi, C. D’Andrea, "Cell-free massive mimo: User-centric approach", IEEE Wireless Communications Letters, vol.6, pp.706–709, 2017.

[9] E. Björnson, L. Sanguinetti, "Scalable cell-free massive mimo systems", IEEE Transactions on Communications, vol.68, pp.4247–4261, 2020.

[10] Y. Zhang, B. Di, H. Zhang, J. Lin, C. Xu, D. Zhang, Y. Li, L. Song, Beyond cell-free mimo: energy efficient reconfigurable intelligent surface aided cell-free mimo communications, IEEE Transactions on Cognitive Communications and Networking 7 (2021) 412–426.

[11] X. Wei, D. Shen, L. Dai, Channel estimation for ris assisted wireless communications—part i: Fundamentals, solutions, and future opportunities, IEEE Communications Letters 25 (2021) 1398–1402.

[12] D. Mishra, H. Johansson, Channel estimation and low-complexity beamforming design for passive intelligent surface assisted miso wireless energy transfer, in: ICASSP 2019-2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), IEEE, 2019, pp. 4659–4663.

[13] C. Hu, L. Dai, S. Han, X. Wang, Two-timescale channel estimation for reconfigurable intelligent surface aided wireless communications, IEEE Transactions on Communications (2021).

[14] Z. Zhang, L. Dai, A joint precoding framework for wideband reconfigurable intelligent surface-aided cell-free network, IEEE Transactions on Signal Processing (2021).

[15] Q. N. Le, V.-D. Nguyen, O. A. Dobre, R. Zhao, Energy efficiency maximization in ris-aided cell-free network with limited backhaul, IEEE Communications Letters (2021).

[16] E. Björnson, L. Sanguinetti, Rayleigh fading modeling and channel hardening for reconfigurable intelligent surfaces, IEEE Wireless Communications Letters 10 (2020) 830–834.

[17] E. Björnson, J. Hoydis, L. Sanguinetti, Massive mimo networks: Spectral, energy, and hardware efficiency, Foundations and Trends in Signal Processing 11 (2017) 154–655.

[16] D.-S. Shiu, G. J. Foschini, M. J. Gans, J. M. Kahn, Fading correlation and its effect on the capacity of multielement antenna systems, IEEE Transactions on communications 48 (2000) 502–513.

[17] H. Alwazani, A. Kammoun, A. Chaaban, M. Debbah, M.-S. Alouini, et al., Intelligent reflecting surface-assisted multi-user miso communication: Channel estimation and beamforming design, IEEE Open Journal of the Communications Society 1 (2020) 661–680.

[18] Q. Wu, R. Zhang, Intelligent reflecting surface enhanced wireless network via joint active and passive beamforming, IEEE Transactions on Wireless Communications 18 (2019) 5394–5409.

[19] T. L. Marzetta, H. Q. Ngo, Fundamentals of massive MIMO, Cambridge University Press, 2016.

[20] M. Bashar, K. Cumanan, A. G. Burr, M. Debbah, H. Q. Ngo, On the uplink max–min sinr of cell-free massive mimo systems, IEEE Transactions on Wireless Communications 18 (2019) 2021–2036.

[21] O. Y. Bursalioglu, G. Caire, R. K. Mungara, H. C. Papadopoulos, C. Wang, Fog massive mimo: A user-centric seamless hot-spot architecture, IEEE Transactions on Wireless Communications 18 (2018) 559–574.

[22] E. Nayebi, A. Ashikhmin, T. L. Marzetta, B. D. Rao, Performance of cell-free massive mimo systems with mmse and lsfd receivers, in: 2016 50th Asilomar Conference on Signals, Systems and Com