Results 21 to 30 of about 206,717 (263)

Enhanced NOMA System Using Adaptive Coding and Modulation Based on LSTM Neural Network Channel Estimation

Applied Sciences, 2019
Non-orthogonal multiple access (NOMA) is the technique proposed for multiple access in the fifth generation (5G) cellular network. In NOMA, different users are allocated different power levels and are served using the same time/frequency resource blocks (
Mai AbdelMoniem, Safa M. Gasser, Mohamed S. El-Mahallawy, Mohamed Waleed Fakhr, Abdelhamid Soliman   +4 more
doaj   +1 more source

AAMS: Application-Aware MCS Selection With Mode Switching for QoE-Driven Large-Scale Media Transmission in 6G Mobile Networks

IEEE Access
Large-scale media data, such as 3D point cloud videos, have received increasing attention as a key content type for 6G mobile communication services. When delivering large-scale media in real time, it is necessary to transmit high-resolution data to meet
Somin Park, Minji Choi, Jin-Hyun Ahn, Dong Ho Kim, Cheolwoo You   +4 more
doaj   +1 more source

Hexagonal QAM-Based Four-Dimensional AMO-OFDM for Spectrally Efficient Optical Access Network Transmission

IEEE Access, 2019
A novel spectrally efficient optical transmission in a passive optical network (PON) with hexagonal quadrature amplitude modulation (QAM)-based adaptive modulated optical (AMO) orthogonal frequency division multiplexing (OFDM) is proposed and ...
Hyoung Joon Park, Soo-Min Kang, Inho Ha, Sang-Kook Han   +3 more
doaj   +1 more source

Novel Channel Quality Indicator Prediction Scheme for Adaptive Modulation and Coding in High Mobility Environments

IEEE Access, 2019
In this paper, a novel channel quality indicator (CQI) prediction scheme for adaptive modulation and coding in high-speed mobility environments is proposed, where the wavenumber spectrum segmentation filters' bank is utilized to improve the estimation ...
Rong Zeng, Tianjing Liu, XuTao Yu, Zaichen Zhang   +3 more
doaj   +1 more source

Multiple treg suppressive modules and their adaptability [PDF]

Frontiers in Immunology, 2012
Foxp3(+) regulatory T cells (Tregs) are a constitutively immunosuppressive cell type critical for the control of autoimmunity and inflammatory pathology. A range of mechanisms of Treg suppression have been identified and it has not always been clear how these different mechanisms interact in order to properly suppress autoimmunity and excessive ...
Wing, James B., Sakaguchi, Shimon
openaire   +3 more sources

Guidelines for Pediatric Radiotherapy Simulation: A Report From the Children's Oncology Group Radiation Oncology Discipline

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric radiation therapy presents unique challenges compared to adult treatments, including those of immobilization, potential need for sedation, and the critical importance of accurate, reproducible positioning. Additionally, heightened attention to imaging doses is necessary to minimize long‐term toxicity in survivors.
Parham Alaei, Stephen Mihalcik, Sujith Baliga, Young Kwok, Dana Casey, Eric Ehler, Christiane Burton, John C. Breneman, Daphne A. Haas‐Kogan, Suzanne L. Wolden, Arnold C. Paulino, Nadia N. Laack, Natia Esiashvili, Sarah Milgrom, Christine Hill‐Kayser, Thomas J. Fitzgerald, John A. Kalapurakal, Chia‐Ho Hua   +17 more
wiley   +1 more source

Adaptive Modulation with Impulsive Interference

CoRR, 2016
In this letter, we analyze power and rate adaptation in a point-to-point link with Rayleigh fading and impulsive interference. We model the impulsive interference as a Bernoulli-Gaussian random process. Adaptation is used to maximize the average spectral efficiency by changing power and rate of the transmission subject to an average power and ...
Sudharsan Parthasarathy, Radha Krishna Ganti   +1 more
openaire   +2 more sources

Natural Killer Cells in Paediatric Soft Tissue Sarcomas: A Systematic Review

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Paediatric soft tissue sarcomas (pSTS) are a rare and heterogeneous group of malignant tumours arising in tissues of mesenchymal origin. The role of natural killer (NK) cells in pSTS remains poorly understood, with evidence fragmented across small preclinical studies and early‐phase clinical trials.
Raya Dean, Lara V. Graham, Christina Putnam, Rosa Gomes Alves Martins, Daniel T. Harding, Tim J. Underwood, Zoë S. Walters, Matthew D. Blunt   +7 more
wiley   +1 more source

Quantum-Inspired Optimization for Multi-Dimensional Adaptive Modulation in Energy-Constrained IoT Networks

IEEE Access
Energy-constrained Internet of Things (IoT) networks require adaptive modulation schemes that simultaneously optimize multiple conflicting objectives, such as energy efficiency, throughput, latency, and reliability, under severe hardware limitations ...
Alfiya Nurpeissova, Jeong Won Kang, Assel Mukasheva, Alibek Bissembayev, Teodor Iliev   +4 more
doaj   +1 more source

Adaptive Modulation for Continuous-Variable Quantum Key Distribution With Real Local Oscillators Under Phase Attack

IEEE Photonics Journal, 2021
Continuous-variable quantum key distribution (CV-QKD) with a real local oscillator (LO) experiences a phase attack security challenge due to the reference pulses transmitted along with quantum signals over an unsecure quantum channel.
Khaled Alaghbari, Konstantin Rumyantsev, Tawfig Eltaif, Osama Elmabrok, Heng-Siong Lim   +4 more
doaj   +1 more source