Results 21 to 30 of about 86,321 (187)

A Hybrid Approach to Spatial Multiplexing in Multiuser MIMO Downlinks

open access: yesEURASIP Journal on Wireless Communications and Networking, 2004
In the downlink of a multiuser multiple-input multiple-output (MIMO) communication system, simultaneous transmission to several users requires joint optimization of the transmitted signals. Allowing all users to have multiple antennas adds an additional
Spencer Quentin H., Swindlehurst A. Lee
doaj   +2 more sources

Carrier Harmonic Modulation for Simultaneous Wireless Information and Power Transfer

open access: yesIEEE Access, 2023
This paper presents the carrier harmonic modulation (CHM) for near-field data communication during wireless power transmission. The proposed CHM does not increase the coil dimension, and an additional data driver is not required.
Jaemyung Lim, Byunghun Lee
doaj   +1 more source

Maximizing sum rate and minimizing MSE on multiuser downlink: Optimality, fast algorithms and equivalence via max-min SIR [PDF]

open access: yes, 2009
Maximizing the minimum weighted SIR, minimizing the weighted sum MSE and maximizing the weighted sum rate in a multiuser downlink system are three important performance objectives in joint transceiver and power optimization, where all the users have a ...
Chiang, Mung, Srikant, R., Tan, Chee Wei
core   +1 more source

Interference Management in UAV-Assisted Integrated Access and Backhaul Cellular Networks

open access: yesIEEE Access, 2019
An integrated access and backhaul (IAB) network architecture can enable flexible and fast deployment of the next-generation cellular networks. However, mutual interference between access and backhaul links, small inter-site distance, and spatial dynamics
Abdurrahman Fouda   +3 more
doaj   +1 more source

Is NOMA Efficient in Multi-Antenna Networks? A Critical Look at Next Generation Multiple Access Techniques

open access: yesIEEE Open Journal of the Communications Society, 2021
In the past few years, a large body of literature has been created on downlink Non-Orthogonal Multiple Access (NOMA), employing superposition coding and Successive Interference Cancellation (SIC), in multi-antenna wireless networks.
Bruno Clerckx   +9 more
doaj   +1 more source

Optimization Framework and Graph-Based Approach for Relay-Assisted Bidirectional OFDMA Cellular Networks [PDF]

open access: yes, 2010
This paper considers a relay-assisted bidirectional cellular network where the base station (BS) communicates with each mobile station (MS) using OFDMA for both uplink and downlink.
Li, Bin   +3 more
core   +1 more source

The potential for super-Nyquist asteroseismology with TESS [PDF]

open access: yes, 2015
The perfect 30-min cadence of the full-frame images from the Transiting Exoplanet Survey Satellite (TESS) will impose a hard Nyquist limit of 24 d$^{-1}$ ($\approx 278$ $\mu$Hz).
Murphy, Simon J.
core   +2 more sources

UL-CSI Data Driven Deep Learning for Predicting DL-CSI in Cellular FDD Systems

open access: yesIEEE Access, 2019
Frequency division duplex (FDD) systems dominate current cellular networks due to its advantages of low latency and strong anti-interference ability.
Jie Wang   +5 more
doaj   +1 more source

Interference Management with Partial Uplink/Downlink Spectrum Overlap

open access: yes, 2015
Simultaneous reuse of spectral resources by uplink and downlink, denoted as in-band full duplex (FD) communication, is promoted to double the spectral efficiency when compared to its half-duplex (HD) counterpart. Interference management, however, remains
Alouini, Mohamed-Slim   +3 more
core   +1 more source

Hybrid Analog-Digital Precoding for Interference Exploitation [PDF]

open access: yes, 2018
We study the multi-user massive multiple-input-single-output (MISO) and focus on the downlink systems where the base station (BS) employs hybrid analog-digital precoding with low-cost 1-bit digital-to-analog converters (DACs). In this paper, we propose a
Li, Ang, Liu, Fan, Masouros, Christos
core   +2 more sources

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