Results 21 to 30 of about 224,801 (264)

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

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

An isoform of 14‐3‐3 protein regulates transbilayer lipid movement at the plasma membrane

FEBS Letters, EarlyView.
Loss of 14‐3‐3ζ in CHO cells confers resistance to exogenous phosphatidylserine (PS) and impairs endocytosis‐independent inward flip‐flop of fluorescent PS at the plasma membrane. RNAi‐mediated knockdown reproduces this defect, while no additive effect is seen in ATP11C‐deficient cells.
Akiko Yamaji‐Hasegawa, Akira Hattori, Masafumi Tsujimoto, Toshihide Kobayashi   +3 more
wiley   +1 more source

Organizing the interface—Plasma membrane architecture and receptor dynamics in virus‐cell interactions

FEBS Letters, EarlyView.
Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
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

The human gut microbiome across the life course

FEBS Letters, EarlyView.
Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero, Basak Bahcivanci, Antonietta Hayhoe, Animesh Acharjee, Ezgi Özkurt   +4 more
wiley   +1 more source

KAMSR: Kernel-Sharing with Adaptive Modulation for Single Rock CT Image Super-Resolution

Mathematics
High-quality rock CT reconstruction is essential for digital rock physics, yet recovering fine pore–fracture structures under limited spatial resolution remains challenging. This study proposes KAMSR, a Kernel-Sharing Adaptive Modulation Super-Resolution
Yanchang Liu, Yiting Liao, Shuyi Liu, Yifan Xu, Tao Lv, Ming Yang   +5 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