Results 51 to 60 of about 3,656,389 (294)
Maximum nullity and zero forcing of circulant graphs
Special Matrices, 2020 The zero forcing number of a graph has been applied to communication complexity, electrical power grid monitoring, and some inverse eigenvalue problems.
Duong Linh +4 more
doaj +1 more source
A Modified Grouped Linear ZF Algorithm Using Different Modulation Schemes for MIMO Systems [PDF]
Engineering and Technology Journal, 2012 A new algorithm for a group iterative linear Zero-Forcing (ZF) receiver formultiple-input multiple-output (MIMO) systems is proposed in this paper. Theproposed algorithm merges between the group linear ZF receiver and V-Blastalgorithms, where the signals
Ahmed Gh. Wadday +2 more
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Adaptive Modulation for Orthogonal Frequency Division Multiplexing [PDF]
Engineering and Technology Journal, 2012 Orthogonal frequency division multiplexing (OFDM) is one of the promising technologies to improve the spectral efficiency, enhance system capacity and mitigate inter-symbol interference in the wireless communication system.
Maher K. Mahmood, Abbas Salman Hameed
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Energy Efficiency in Cell-Free Massive MIMO with Zero-Forcing Precoding Design [PDF]
IEEE Communications Letters, 2017 We consider the downlink of a cell-free massive multiple-input multiple-output (MIMO) network, where numerous distributed access points (APs) serve a smaller number of users under time division duplex operation.
L. Nguyen, T. Duong, H. Ngo, K. Tourki
semanticscholar +1 more source
Theory and Applications of Graphs, 2015 The k-forcing number of a graph is a generalization of the zero forcing number. In this note, we give a greedy algorithm to approximate the k-forcing number of a graph. Using this dynamic approach, we give corollaries which improve upon two theorems from
Yair Caro, Ryan Pepper
doaj +1 more source
Rigid Linkages and Partial Zero Forcing
The Electronic Journal of Combinatorics, 2019 Connections between vital linkages and zero forcing are established. Specifically, the notion of a rigid linkage is introduced as a special kind of unique linkage and it is shown that spanning forcing paths of a zero forcing process form a spanning rigid linkage and thus a vital linkage.
Daniela Ferrero +7 more
openaire +5 more sources
Multi-Pair Two-Way Massive MIMO Relaying With Zero Forcing: Energy Efficiency and Power Scaling Laws
IEEE Transactions on Communications, 2020 In this paper, we study a multi-pair two-way half-duplex decode-and-forward (DF) massive multiple-input multiple-output (MIMO) relaying system, in which multiple single-antenna user pairs can exchange information through a massive MIMO relay.
J. Qian, C. Masouros, M. Matthaiou
semanticscholar +1 more source
Failed Zero Forcing Numbers of Trees and Circulant Graphs
Theory and Applications of GraphsGiven a graph $G$, the zero forcing number of $G$, $Z(G)$, is the smallest cardinality of any set $S$ of vertices on which repeated applications of the forcing rule (described below) results in all vertices being in $S$.
Luis Gomez +4 more
doaj +1 more source
Beamforming design of sum rate optimization for MU-MISO scenario
上海师范大学学报. 自然科学版, 2015 This paper investigates the beamforming design based on perfect channel state information (CSI) in a multi-user downlink network.The base station (BS) is equipped with multiple antennas while each user is equipped with one antenna.The BS will communicate
ZHAO Pu, YU Hui, LUO Hanwen
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Rate Splitting With Finite Constellations: The Benefits of Interference Exploitation vs Suppression
IEEE Open Journal of the Communications Society, 2021 Rate-Splitting (RS) has been shown recently to be a powerful approach for the design of non-orthogonal transmission, multiple access, and interference management strategies in multi-user multi-antenna systems.
Abdelhamid Salem +2 more
doaj +1 more source