Results 81 to 90 of about 485,680 (303)

Closed-Form Approximation to the Average Symbol Error Probability for Cross-QAM over κ–μ Fading Channels with Experimental Validation in the Millimeter-Wave Band

Telecom
This work presents a closed-form approximation to the symbol error probability (SEP) for cross-quadrature amplitude modulation (cross-QAM) schemes over κ–μ fading channels.
Wilian Eurípedes Vieira, Karine Barbosa Carbonaro, Gilberto Arantes Carrijo, Edson Agustini, André Antônio dos Anjos, Pedro Luiz Lima Bertarini   +5 more
doaj   +1 more source

Machine Learning Model for Adaptive Modulation of Multi-Stream in MIMO-OFDM System

IEEE Access, 2019
In this paper, we propose the adaptive modulation (AM) model based on machine learning for a multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) system.
Chang-Bin Ha, Young-Hwan You, Hyoung-Kyu Song   +2 more
doaj   +1 more source

Space-Time Trellis and Space-Time Block Coding Versus Adaptive Modulation and Coding Aided OFDM for Wideband Channels

, 2006
—The achievable performance of channel coded spacetime trellis (STT) codes and space-time block (STB) codes transmitted over wideband channels is studied in the context of schemes having an effective throughput of 2 bits/symbol (BPS) and 3 BPS.
Hanzo, L., Liew, T.H.
core   +1 more source

A survey on OFDM-based elastic core optical networking [PDF]

, 2013
Orthogonal frequency-division multiplexing (OFDM) is a modulation technology that has been widely adopted in many new and emerging broadband wireless and wireline communication systems.
De Leenheer, Marc, Morea, A, Mukherjee, B, Zhang, GY   +3 more
core   +2 more sources

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

FEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura, Shin‐ichi Tate, Kyota Yasuda   +2 more
wiley   +1 more source

Joint Design of Adaptive Modulation and Precoding for Physical Layer Security in Visible Light Communications Using Reinforcement Learning

IEEE Access
There has been an increasing interest in physical layer security (PLS), which, compared with conventional cryptography, offers a unique approach to guaranteeing information confidentiality against eavesdroppers.
Duc M. T. Hoang, Thanh V. Pham, Anh T. Pham, Chuyen T. Nguyen   +3 more
doaj   +1 more source

Joint Rate and Power Adaptation for Amplify-and-Forward Two-Way Relaying Relying on Analog Network Coding

IEEE Access, 2016
Analog network coding (ANC) is a promising technique of improving the throughput of relaying, especially when combined with both rate- and power-adaptation in the context of amplify-and-forward two-way relaying (AF-TWR ). In particular, the adaptation is
Yanping Yang, Wei Chen, Ou Li, Lajos Hanzo   +3 more
doaj   +1 more source

Premartensite to martensite transition and its implications on the origin of modulation in Ni2MnGa ferromagnetic shape memory alloy

, 2015
We present here results of temperature dependent high resolution synchrotron x-ray powder diffraction study of sequence of phase transitions in Ni2MnGa.
Barman, S. R., Bednarcik, J., Felser, C., Pandey, Dhananjai, Singh, Sanjay   +4 more
core   +1 more source

Linking neurogenesis, oligodendrogenesis, and myelination defects to neurodevelopmental disruption in primary mitochondrial disorders

FEBS Letters, EarlyView.
Mitochondrial remodeling shapes neural and glial lineage progression by matching metabolic supply with demand. Elevated OXPHOS supports differentiation and myelin formation, while myelin compaction lowers mitochondrial dependence, revealing mitochondria as key drivers of developmental energy adaptation.
Sahitya Ranjan Biswas, Porter L. Tomsick, Alicia M. Pickrell, Paul D. Morton   +3 more
wiley   +1 more source

Adaptive Demodulation in Differentially Coherent Phase Systems: Design and Performance Analysis

, 2010
Adaptive Demodulation (ADM) is a newly proposed rate-adaptive system which operates without requiring Channel State Information (CSI) at the transmitter (unlike adaptive modulation) by using adaptive decision region boundaries at the receiver and ...
Abouei, Jamshid, Brown, J. David, Pasupathy, Subbarayan, Plataniotis, Konstantinos N.   +3 more
core   +1 more source