Results 41 to 50 of about 33,097 (233)

Precoding in multigateway multibeam satellite systems [PDF]

open access: yes, 2016
This paper considers a multigateway multibeam satellite system with multiple feeds per beam. In these systems, each gateway serves a set of beams (cluster) so that the overall data traffic is generated at different geographical areas.
Joroughi, Vahid   +2 more
core   +1 more source

Digital Twin‐Based Optimization of Service Availability in LEO Mega Constellations Considering Handover Delays in Open RAN

open access: yesInternational Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT As non‐terrestrial networks (NTNs) become integral to future 6G systems, ensuring seamless connectivity and service continuity over low Earth orbit (LEO) satellite constellations is essential. This work investigates the impact of open radio access network (RAN) functional splits on handover performance in NTNs, focusing on minimizing service ...
Siva Satya Sri Ganesh Seeram   +3 more
wiley   +1 more source

Low complexity hybrid precoding method in mmWave massive MIMO system

open access: yesDianxin kexue, 2016
A low-complexity hybrid precoding method was proposed to design the hybrid precoding for mmWave massive MIMO system.Firstly,an initial radio frequency(RF)precoding matrix was constructed based on the singular value decomposition.Then an updated RF matrix
Jianwei XIANG, Xiulan YU, Xiaorong JING
doaj   +2 more sources

Joint Quantized Constant Envelope Precoding and Antenna Selection for Massive MU-MIMO Downlink Systems Using Higher-Order QAM

open access: yesIEEE Access, 2019
This paper introduces the antenna selection (AS) mechanism into the quantized constant envelope (CE) precoding in massive multiuser multiple-input multiple-output systems to simultaneously reduce multiuser interference and hardware power consumption ...
Jung-Chieh Chen
doaj   +1 more source

Spectral Efficiency Optimization For Millimeter Wave Multi-User MIMO Systems

open access: yes, 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. However, the high cost and power consumption of RF chains stands in
Hong, Mingyi, Shi, Qingjiang
core   +1 more source

Designing Multi-User MIMO for Energy Efficiency: When is Massive MIMO the Answer? [PDF]

open access: yes, 2014
Assume that a multi-user multiple-input multiple-output (MIMO) communication system must be designed to cover a given area with maximal energy efficiency (bit/Joule).
Björnson, Emil   +3 more
core   +4 more sources

Costa Precoding in One Dimension [PDF]

open access: yes2006 IEEE International Conference on Acoustics Speed and Signal Processing Proceedings, 2006
We design an optimum modulator for the Costa (dirty-paper) precoding problem under the constraint of a binary signaling alphabet, and assuming the interference symbols belong to a binary constellation. We evaluate the performance of our technique in terms of the mutual information between the channel input and output, and compare it to that of ...
Du, Jinfeng   +2 more
openaire   +2 more sources

A Bibliometric Review of a Decade of Integrated Reporting Research*

open access: yesAccounting Perspectives, EarlyView.
ABSTRACT Understanding the current status and future directions of integrated reporting (IR) within today's voluntary reporting landscape is crucial for advancing accounting scholarship and practice. This study presents a comprehensive bibliometric review of IR research alongside content analysis to identify publication trends, research collaborations,
Ajanthan Alagathurai   +3 more
wiley   +1 more source

Precoding-Based Network Alignment For Three Unicast Sessions

open access: yes, 2014
We consider the problem of network coding across three unicast sessions over a directed acyclic graph, where each sender and the receiver is connected to the network via a single edge of unit capacity.
Das, Abhik Kumar   +5 more
core   +1 more source

Co‐textual dopes: How LLMs produce contextually appropriate text in chat interactions with humans without access to context

open access: yesJournal of Linguistic Anthropology, Volume 36, Issue 1, May 2026.
Abstract This paper asks how LLM‐based systems can produce text that is taken as contextually appropriate by humans without having seen text in its broader context. To understand how this is possible, context and co‐text have to be distinguished. Co‐text is input to LLMs during training and at inference as well as the primary resource of sense‐making ...
Ole Pütz
wiley   +1 more source

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