Results 111 to 120 of about 184,691 (254)

Energy Beamforming with One-Bit Feedback

open access: yes, 2014
Wireless energy transfer (WET) has attracted significant attention recently for providing energy supplies wirelessly to electrical devices without the need of wires or cables.
Xu, Jie, Zhang, Rui
core   +1 more source

Optimal pilot pattern for data‐aided channel estimation for MIMO‐OFDM wireless systems

open access: yesIET Communications, Volume 18, Issue 19, Page 1474-1484, December 2024.
This article presents an optimal comb‐type pilot pattern for the data‐aided channel estimation (DACE) scheme for both single‐input single‐output (SISO) and multiple‐input multiple‐output orthogonal frequency division multiplexing (MIMO‐OFDM) wireless systems.
Inaamullah Khan, Michael Cheffena
wiley   +1 more source

Hypergraph Modeling and Approximation Algorithms for the Minimum Length Link Scheduling in Multiuser MIMO Networks

open access: yesJournal of Applied Mathematics, 2013
This paper investigates the problem of the minimum length link scheduling (MLLS) in multiuser MIMO (MU-MIMO) networks. Generally, in the networks with MU-MIMO capability, the number of concurrent transmissions can be as large as that of antenna elements ...
Hu Shen   +5 more
doaj   +1 more source

Asymptotic Analysis in MIMO MRT/MRC Systems

open access: yesEURASIP Journal on Wireless Communications and Networking, 2006
Through the analysis of the probability density function of the squared largest singular value of a complex Gaussian matrix at the origin and tail, we obtain two asymptotic results related to the multi-input multi-output (MIMO) maximum-ratio ...
Zhou Quan, Dai Huaiyu
doaj  

Capacity-Achieving Iterative LMMSE Detection for MIMO-NOMA Systems

open access: yes, 2016
This paper considers a iterative Linear Minimum Mean Square Error (LMMSE) detection for the uplink Multiuser Multiple-Input and Multiple-Output (MU-MIMO) systems with Non-Orthogonal Multiple Access (NOMA).
Guan, Yong Liang   +3 more
core   +2 more sources

Enabling Signal Space Diversity for MU-MIMO/OFDMA Cellular Systems That Employ Frequency Diversity

open access: yesIEEE Access, 2019
Signal space diversity (SSD) is a technique to obtain diversity without loss in spectral efficiency. Despite this, SSD has been minimally studied in multiuser scenarios.
Henry Carvajal Mora   +3 more
doaj   +1 more source

Physical Layer Security for Massive MIMO Systems Impaired by Phase Noise

open access: yes, 2016
In this paper, we investigate the impact of phase noise on the secrecy performance of downlink massive MIMO systems in the presence of a passive multiple-antenna eavesdropper.
Bhargava, Vijay K.   +2 more
core   +1 more source

A Closed-Form Approximation of Correlated Multiuser MIMO Ergodic Capacity With Antenna Selection and Imperfect Channel Estimation

open access: yesIEEE Transactions on Vehicular Technology, 2018
Antenna selection (AS) is a promising technology to substantially reduce the complexity of massive multiple-input multiple-output (MIMO) systems. However, spatial correlation and imperfect estimation of channel state information (CSI) are well known to ...
W. Al-Hussaibi, F. Ali
semanticscholar   +1 more source

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