One-bit precoding and constellation range design for massive MIMO with QAM signaling

F Sohrabi, YF Liu, W Yu - IEEE Journal of Selected Topics in …, 2018 - ieeexplore.ieee.org
The use of low-resolution digital-to-analog converters (DACs) for transmit precoding
provides crucial energy efficiency advantage for massive multiple-input multiple-output …

Structured massive access for scalable cell-free massive MIMO systems

S Chen, J Zhang, E Björnson… - IEEE Journal on …, 2020 - ieeexplore.ieee.org
How to meet the demand for increasing number of users, higher data rates, and stringent
quality-of-service (QoS) in the beyond fifth-generation (B5G) networks? Cell-free massive …

Hardening the channels by precoder design in massive MIMO with multiple-antenna users

JAC Sutton, HQ Ngo… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
In this paper, we investigate the potential of a novel precoder for a massive multiple-input
multiple-output (MIMO) system with multiple-antenna users under the influence of both …

Performance analysis for user-centric cell-free massive MIMO systems with hardware impairments and multi-antenna users

M Xie, X Yu, Y Rui, K Wang, X Dang… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
Cell-free massive multiple-input multiple-output (CF mMIMO) is known for its ability to
provide ubiquitous connectivity. In this paper, we investigate the achievable spectral …

Channel estimation for multicell multiuser massive MIMO uplink over Rician fading channels

L Wu, Z Zhang, J Dang, J Wang… - IEEE Transactions on …, 2017 - ieeexplore.ieee.org
Pilot contamination (PC) is a major problem in massive multiple-input multiple-output
(MIMO) systems. This paper proposes a novel channel estimation scheme for such a system …

Improving cell-free massive MIMO by local per-bit soft detection

C D'Andrea, EG Larsson - IEEE Communications Letters, 2021 - ieeexplore.ieee.org
In this letter, we consider the uplink of a cell-free Massive multiple-input multiple-output
(MIMO) network where each user is decoded by a subset of access points (APs). An …

Hybrid precoding with rate and coverage constraints for wideband massive MIMO systems

L Kong, S Han, C Yang - IEEE Transactions on Wireless …, 2018 - ieeexplore.ieee.org
Hybrid architecture is recognized as complexity and cost effective for the implementation of
massive multi-input multi-output (MIMO) systems, where analog precoder is used to form …

Cell-free massive MIMO with limited backhaul

M Bashar, K Cumanan, AG Burr… - 2018 IEEE …, 2018 - ieeexplore.ieee.org
We consider a cell-free Massive multiple-input multiple-output (MIMO) system and
investigate the system performance for the case when the quantized version of the estimated …

Low-complexity SSOR-based precoding for massive MIMO systems

T Xie, L Dai, X Gao, X Dai… - IEEE Communications …, 2016 - ieeexplore.ieee.org
With the increase of the number of base station (BS) antennas in massive multiple-input
multiple-output (MIMO) systems, linear precoding schemes are able to achieve the near …

Performance analysis for massive MIMO downlink with low complexity approximate zero-forcing precoding

C Zhang, Y Jing, Y Huang… - IEEE Transactions on …, 2018 - ieeexplore.ieee.org
Zero-forcing (ZF) precoding plays an important role for massive MIMO downlink due to its
near optimal performance. However, the high computation cost of the involved matrix …