Results 31 to 40 of about 324,143 (269)

Codebook Design for PD-SCMA NOMA Systems

open access: yesIEEE Access, 2023
The hybrid power domain sparse code non-orthogonal multiple access (PD-SCMA) scheme multiplexes multiple users on a single resource element (RE) both in power and code domains, thus achieving a superior spectral efficiency.
Simon Chege, Tom Walingo, Foued Derraz
doaj   +1 more source

White matter microstructure and longitudinal relaxation time anisotropy in human brain at 3 and 7 T

open access: yesNMR in Biomedicine, Volume 36, Issue 1, January 2023., 2023
White matter (WM) with high structural anisotropy T1 shows angular dependency on B0. At 3T, a T1 peak at 54° and flat baseline across 0° and 90° are observed in WM [Panel A, T1 as a function of fibre‐to‐filed angle (q)]. At 7T, the T1 peak is centred at 40°.
Risto A. Kauppinen   +4 more
wiley   +1 more source

Enrichment of hepatic glycogen and plasma glucose from H₂18O informs gluconeogenic and indirect pathway fluxes in naturally feeding mice

open access: yesNMR in Biomedicine, Volume 36, Issue 2, February 2023., 2023
18O‐enrichment of liver glycogen, triglyceride glycerol, and blood glucose of mice given 18O‐water during overnight feeding was quantified by 13C NMR and MS. Glycogen 18O‐enrichment of oxygens 3, 5, and 6 from isotope‐shifted 13C signals informed indirect pathway contributions from different sources.
Margarida Coelho   +11 more
wiley   +1 more source

Ceramic‐hydrogel composite as carrier for cold‐plasma reactive‐species: Safety and osteogenic capacity in vivo

open access: yesPlasma Processes and Polymers, Volume 20, Issue 1, January 2023., 2023
In this study, a novel composite based on calcium phosphate ceramic and the plasma‐treated hydrogel is developed. With such a combination it is possible to supplement the excellent bone regenerative properties of calcium phosphates bone grafts with an anticancer agent, that is, the plasma‐treated hydrogel. While being selective toward OS cells in vitro,
Xavi Solé‐Martí   +6 more
wiley   +1 more source

New High Performance Deterministic Interleavers for Turbo Codes

open access: yesAdvances in Electrical and Computer Engineering, 2010
Turbo codes offer extraordinary performance, especially at low signal to noise ratios, due to a low multiplicity of low weight code words. The interleaver design is critical in order to realize an apparent randomness of the code, thus further enhancing
TRIFINA, L.   +4 more
doaj   +1 more source

Analysis and Design of Tuned Turbo Codes [PDF]

open access: yes, 2012
It has been widely observed that there exists a fundamental trade-off between the minimum (Hamming) distance properties and the iterative decoding convergence behavior of turbo-like codes.
Amat, Alexandre Graell i   +5 more
core   +2 more sources

Reprograming of proteasomal degradation by branched chain amino acid metabolism

open access: yesAging Cell, Volume 21, Issue 12, December 2022., 2022
Using genetics and multi‐omics analyses in Caenorhabditis elegans, we identified adaptive regulation of the ubiquitin‐proteasome system (UPS) in response to defective branched chain amino acid (BCAA) metabolism. Worms with impaired BCAA metabolism show slower turnover of a GFP‐based proteasome substrate, which is suppressed by loss‐of‐function of the ...
Sonia Ravanelli   +5 more
wiley   +1 more source

Turbo Coded OFDM Combined with MIMO Antennas Based on Matched Interleaver for Coded-Cooperative Wireless Communication

open access: yesInformation, 2017
A turbo coded cooperative orthogonal frequency division multiplexing (OFDM) with multiple-input multiple-output (MIMO) antennas scheme is considered, and its performance over a fast Rayleigh fading channel is evaluated.
Rahim Umar, Fengfan Yang, Shoaib Mughal
doaj   +1 more source

A VHDL Code for Offset Pulse Position Modulation Working with Reed Solomon System by Using ModelSim

open access: yesJournal of Techniques, 2022
Error correction codes, often known as ECC, play a significant part in the process of detecting and correcting data mistakes that occur through communication channels that are unreliable or noisy.
Ahmed H. Albatoosh   +2 more
doaj   +1 more source

DIFFERENT FPGA PRODUCTS BASED IMPLEMENTATION OF LTE TURBO CODE

open access: yesIraqi Journal of Information & Communication Technology, 2020
In the long-term evolution (LTE) physical layer, using turbo code is considered as the paramount one in error-correcting coding. This paper presents an implementation of LTE turbo decoding using the Log- Maximum a posteriori (MAP) algorithm with reduced ...
Khadija Omran Dheeb, Bayan Sabbar
doaj   +1 more source

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