Results 51 to 60 of about 50,793 (224)

Optimal Linear Precoding for Indoor Visible Light Communication System

open access: yes, 2017
Visible light communication (VLC) is an emerging technique that uses light-emitting diodes (LED) to combine communication and illumination. It is considered as a promising scheme for indoor wireless communication that can be deployed at reduced costs ...
Alouini, Mohamed-Slim   +3 more
core   +1 more source

Cooperative Multi-Cell Block Diagonalization with Per-Base-Station Power Constraints [PDF]

open access: yes, 2009
Block diagonalization (BD) is a practical linear precoding technique that eliminates the inter-user interference in downlink multiuser multiple-input multiple-output (MIMO) systems. In this paper, we apply BD to the downlink transmission in a cooperative
Zhang, Rui
core   +2 more sources

Linear Precoding for Broadcast Channels with Confidential Messages under Transmit-Side Channel Correlation

open access: yes, 2013
In this paper, we analyze the performance of regularized channel inversion (RCI) precoding in multiple-input single-output (MISO) broadcast channels with confidential messages under transmit-side channel correlation.
Al-nahari, Azzam Y.   +3 more
core   +1 more source

One-Bit Precoding and Constellation Range Design for Massive MIMO with QAM Signaling

open access: yes, 2018
The use of low-resolution digital-to-analog converters (DACs) for transmit precoding provides crucial energy efficiency advantage for massive multiple-input multiple-output (MIMO) implementation.
Liu, Ya-Feng, Sohrabi, Foad, Yu, Wei
core   +1 more source

Energy Efficient Symbol-Level Precoding in Multiuser MISO Channels [PDF]

open access: yes, 2015
This paper investigates the idea of exploiting interference among the simultaneous multiuser transmissions in the downlink of multiple antennas systems.
Alodeh, Maha   +2 more
core   +2 more sources

Statistical CSI-Based Downlink Precoding for Multi-Beam LEO Satellite Communications

open access: yesAerospace
With the rapid development of low-Earth-orbit (LEO) satellite communications, multi-beam precoding has emerged as a key technology for improving spectrum efficiency.
Feng Zhu   +3 more
doaj   +1 more source

Hierarchical Energy Efficient Hybrid Precoding for Configurable Sub-Connected MIMO Systems

open access: yesIEEE Access, 2021
This paper proposed a configurable sub-connected architecture with a framework that dynamically activates the near-optimal subset of antennas and RF chains to implement energy-efficient hybrid precoding in millimeter wave multiple-input multiple-output ...
Xiang Li, Yang Huang, Wei Heng, Jing Wu
doaj   +1 more source

Waveforms for the Massive MIMO Downlink: Amplifier Efficiency, Distortion and Performance

open access: yes, 2015
In massive MIMO, most precoders result in downlink signals that suffer from high PAR, independently of modulation order and whether single-carrier or OFDM transmission is used. The high PAR lowers the power efficiency of the base station amplifiers.
Eriksson, Thomas   +2 more
core   +2 more sources

Linear Precoding in Cooperative MIMO Cellular Networks with Limited Coordination Clusters [PDF]

open access: yes, 2010
In a cooperative multiple-antenna downlink cellular network, maximization of a concave function of user rates is considered. A new linear precoding technique called soft interference nulling (SIN) is proposed, which performs at least as well as zero ...
Huang, Howard, Ng, Chris T. K.
core   +1 more source

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