Precoding and Power Optimization in Cell-Free Massive MIMO Systems

By Elina Nayebi, Alexei E. Ashikhmin, T. Marzetta, Hong Yang, Bhaskar D. Rao. IEEE Transactions on Wireless Communications, 2017

651 citations recorded by the source corpus.

Subfields: Computer Networks and Communications, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/b6465c7ae4c2932cb10312fd692223ac898371c6

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Computer Networks and Communications

In Electrical and Electronic Engineering

Citations in the corpus

Massive Access for 5G and Beyond (2020, background): “A max-min power control scheme was proposed in [154] to provide equal throughput to all users.”
What Will the Future of UAV Cellular Communications Be? A Flight From 5G to 6G (2021, background): “DL precoding [148]–[150], or DL power allocation [151], [152], and new issues arise with the move to C-RAN structures, where the traditional shared resources of power and”
Toward Massive MIMO 2.0: Understanding Spatial Correlation, Interference Suppression, and Pilot Contamination (2019, background): “Recent papers have demonstrated substantial performance gains for cell-free operation compared to small-cell networks [74], [75] (where each distributed antenna operates autonomously) and cellular Massive MIMO [76].”
User-Centric Cell-Free Massive MIMO Networks: A Survey of Opportunities, Challenges and Solutions (2021, methodology): “Hence, in practice, especially in the absence of channel hardening, other local schemes such as the LSFD [6, 7, 62, 91, 92], local MMSE combining [3], and the weighted MMSE [20, 201] could be better candidates for beamforming in cell-free MIMO networks irrespective of the level of co-operation [3].”
Channel Hardening and Favorable Propagation in Cell-Free Massive MIMO With Stochastic Geometry (2017, methodology): “1 for an illustration and [9]–[12], [17] for the basic implementation aspects.”
Massive MIMO is a Reality - What is Next? Five Promising Research Directions for Antenna Arrays (2019, methodology): “This has recently been called Cell-free Massive MIMO [37], [38], but the basic concept has its roots in papers from the early 00s [39], [40].”
User-Centric 5G Cellular Networks: Resource Allocation and Comparison With the Cell-Free Massive MIMO Approach (2018, background): “The paper [8] has shown that some performance improvement can be obtained in low density networks by using downlink pilots, while the paper [9], instead, analyzes the performance improvements granted by the use of a zero-forcing precoder in the downlink: although the gains are from ﬁve to ten-fold,…”
White Paper on Broadband Connectivity in 6G (2020, methodology): “In its original form [36, 37], cell-free massive MIMO avoids CSI exchange by only performing signal encoding/decoding at the CPU, while combining/precoding (such as matched ﬁltering, local zero-forcing, and local minimum mean squared error (MMSE) processing) is implemented at each AP using locally…”
Scalable Cell-Free Massive MIMO Systems (2019, methodology): “There are plenty of such schemes in the literature; some examples are found in [6], [9], [17], [33], [10, Sec.”
Foundations of User-Centric Cell-Free Massive MIMO (2020, methodology): “4, was analyzed in the early works [121], [126] with the focus on a distributed operation where the APs perform all the signal processing tasks, except for those that critically require central coordination.”
A Joint Precoding Framework for Wideband Reconfigurable Intelligent Surface-Aided Cell-Free Network (2020, background): “ork, all BSs are synchronized, which is necessary to serve all users by coherent joint transmission [8]. We follow the common assumption in the literature that all BSs transmit the same symbols [11], [37]–[39]. Let s p , [s p;1; ;s p;K] T 2CK, where s p;k denotes the transmitted symbol to the k-th u”
Making Cell-Free Massive MIMO Competitive With MMSE Processing and Centralized Implementation (2019, methodology): “Particularly, [16], [17] demonstrated large improvements in”
On the Total Energy Efficiency of Cell-Free Massive MIMO (2017, methodology): “In [9], the performance of cell-free massive MIMO with zero-forcing processing was analyzed, under the assumption that all pilot sequences assigned to the users were mutually orthogonal.”
Prospective Multiple Antenna Technologies for Beyond 5G (2019, methodology): “The network operates in TDD mode and exploits uplink-downlink channel reciprocity [37], [38], so that each AP can acquire CSI between itself and all UEs from uplink pilots.”
Cell-Free Massive MIMO: A New Next-Generation Paradigm (2019, background): “TheCFmassiveMIMO systems relying on the ZF precoder are capable of attaining a tenfold improvement in terms of the 95%-likely per-UE rate over small-cell systems at an outage probability of 5% [21].”