Results 41 to 50 of about 1,605,056 (288)

Space-time coding for UMTS. Performance evaluation in combination with convolutional and turbo coding [PDF]

open access: yes, 2000
Space-time codes provide both diversity and coding gain when using multiple transmit antennas to increase spectral efficiency over wireless communications systems.
Gaspa Maynou, Roger   +1 more
core   +1 more source

Changes in Body Composition in Children and Young People Undergoing Treatment for Acute Lymphoblastic Leukemia: A Systematic Review and Meta‐Analysis

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Ongoing evidence indicates increased risk of sarcopenic obesity among children and young people (CYP) with acute lymphoblastic leukemia (ALL), often beginning early in treatment, persisting into survivorship. This review evaluates current literature on body composition in CYP with ALL during and after treatment.
Lina A. Zahed   +5 more
wiley   +1 more source

On the Asymptotic Performance of Multiple Antenna Channels with Fast Channel Feedback

open access: yes, 2005
In this paper, we analyze the asymptotic performance of multiple antenna channels where the transmitter has either perfect or finite bit channel state information.
Khoshnevis, Ahmad   +3 more
core   +2 more sources

Parent‐to‐Child Information Disclosure in Pediatric Oncology

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Despite professional consensus regarding the importance of open communication with pediatric cancer patients about their disease, actual practice patterns of disclosure are understudied. Extant literature suggests a significant proportion of children are not told about their diagnosis/prognosis, which is purported to negatively ...
Rachel A. Kentor   +12 more
wiley   +1 more source

Design and Performance Evaluation of Orthogonally Polarized Corporate Feed MIMO Antenna Array for Next-Generation Communication System

open access: yesIEEE Access
This study presents a novel, compact, diamond-shaped Multiple Input Multiple Output (MIMO) antenna system for 5G wireless communication. The proposed MIMO antenna system encompasses an array configuration, with each array unit comprising two antenna ...
Kiran Raheel   +5 more
doaj   +1 more source

Analysis and Evaluation of Performance Gains and Tradeoffs for Massive MIMO Systems

open access: yesApplied Sciences, 2016
Massive MIMO technique offers significant performance gains for the future of wireless communications via improving the spectral efficiency, energy efficiency and the channel quality with simple linear processing such as maximum-ratio transmission (MRT ...
Saba Qasim Jabbar, Yu Li
doaj   +1 more source

BER and outage probability of DPSK subcarrier intensity modulated free space optics in fully developed speckle. [PDF]

open access: yes, 2009
In this paper a differential phase shift keying (DPSK) subcarrier intensity modulated (SIM) free space optical (FSO) link is considered in negative exponential atmospheric turbulence environment.
Ghassemlooy, Zabih   +2 more
core   +2 more sources

Predicting Chronicity in Children and Adolescents With Newly Diagnosed Immune Thrombocytopenia at the Timepoint of Diagnosis Using Machine Learning‐Based Approaches

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Objectives To identify predictors of chronic ITP (cITP) and to develop a model based on several machine learning (ML) methods to estimate the individual risk of chronicity at the timepoint of diagnosis. Methods We analyzed a longitudinal cohort of 944 children enrolled in the Intercontinental Cooperative immune thrombocytopenia (ITP) Study ...
Severin Kasser   +6 more
wiley   +1 more source

Peningkatan Unjuk Kerja Sistem Transmisi Komunikasi Digital pada Penerima dengan Menggunakan Teknik Diversity Equal Gain Combining

open access: yesJurnal Nasional Teknik Elektro, 2016
In digital communication systems, their fading and noise in the channel will disrupt or degrade the performance of a digital communication system. Where this disorder, can cause the error detection signal, so as to change bits or symbols at the receiver
Baharuddin Abbas, Ondri Yudha Rusli
doaj   +3 more sources

Cooperative Transmission Protocols with High Spectral Efficiency and High Diversity Order Using Multiuser Detection and Network Coding

open access: yes, 2007
Cooperative transmission is an emerging communication technique that takes advantages of the broadcast nature of wireless channels. However, due to low spectral efficiency and the requirement of orthogonal channels, its potential for use in future ...
Han, Zhu, Poor, H. Vincent, Zhang, Xin
core   +1 more source

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