Passive Beamforming and Information Transfer Design for Reconfigurable Intelligent Surfaces Aided Multiuser MIMO Systems [PDF]
IEEE Journal on Selected Areas in Communications, 2019 This paper investigates the passive beamforming and information transfer (PBIT) technique for multiuser multiple-input multiple-output (Mu-MIMO) systems with the aid of reconfigurable intelligent surfaces (RISs), where the RISs enhance the primary ...
Wenjing Yan +3 more
semanticscholar +1 more source
A spatial interference minimization strategy for the correlated LTE downlink channel [PDF]
, 2010 In a downlink transmission, users can benefit from the high capacity gain achieved by transmitting independent data streams from multiple antennas to multiple users sharing the same physical time-frequency resources.
Armour, SMD, McGeehan, JP, Nordin, R
core +2 more sources
Multiuser Space–Time Line Code With Optimal and Suboptimal Power Allocation Methods
IEEE Access, 2018 In this paper, a multiuser space-time line code (STLC) system is proposed. In the proposed multiuser STLC system, a zero-forcing (ZF)-based precoder decomposes multiuser multiple-input multiple-output (MIMO) channels into multiple single-user MIMO ...
Jingon Joung, Eui-Rim Jeong
doaj +1 more source
Exploiting Opportunistic Multiuser Detection in Decentralized Multiuser MIMO Systems [PDF]
GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference, 2009 This paper studies the design of a decentralized multiuser multi-antenna (MIMO) system for spectrum sharing over a fixed narrow band, where the coexisting users independently update their transmit covariance matrices for individual transmit-rate maximization via an iterative manner.
Zhang, R., Cioffi, J.M.
openaire +3 more sources
Hybrid Beamforming via the Kronecker Decomposition for the Millimeter-Wave Massive MIMO Systems [PDF]
, 2017 Despite its promising performance gain, the realization of mmWave massive MIMO still faces several practical challenges. In particular, implementing massive MIMO in the digital domain requires hundreds of RF chains matching the number of antennas ...
Huang, Kaibin +5 more
core +3 more sources
SWIPT techniques for multiuser MIMO broadcast systems [PDF]
, 2016 In this paper, we present an approach to solve the nonconvex optimization problem that arises when designing the transmit covariance matrices in multiuser multiple-input multiple-output (MIMO) broadcast networks implementing simultaneous wireless ...
Goldsmith, Andrea +3 more
core +1 more source
Spectral Efficiency Optimization For Millimeter Wave Multiuser MIMO Systems [PDF]
IEEE Journal on Selected Topics in Signal Processing, 2018 As a key enabling technology for 5G wireless, millimeter wave (mmWave) communication motivates the utilization of large-scale antenna arrays for achieving highly directional beamforming.
Qingjiang Shi, Mingyi Hong
semanticscholar +1 more source
Progressive Refinement of Beamforming Vectors for High-Resolution Limited Feedback
EURASIP Journal on Advances in Signal Processing, 2009 Limited feedback enables the practical use of channel state information in multiuser multiple-input multiple-output (MIMO) wireless communication systems.
Robert W. Heath +2 more
doaj +1 more source
The MIMO Iterative Waterfilling Algorithm [PDF]
, 2008 This paper considers the non-cooperative maximization of mutual information in the vector Gaussian interference channel in a fully distributed fashion via game theory.
Barbarossa, Sergio +2 more
core +3 more sources
Low-Complexity Hybrid Precoding in Massive Multiuser MIMO Systems [PDF]
IEEE Wireless Communications Letters, 2014 Massive multiple-input multiple-output (MIMO) is envisioned to offer considerable capacity improvement, but at the cost of high complexity of the hardware.
Le Liang, Wei Xu, Xiaodai Dong
semanticscholar +1 more source