Results 61 to 70 of about 1,424,429 (250)

On Buffer-Aided Multiple-Access Relay Channel

open access: yes, 2016
The paper treats uplink scenario where M user equipments (UEs) send to a Base Station (BS), possibly via a common Relay Station (RS) that is equipped with a buffer. This is a multiple-access relay channel (MARC) aided by a buffer. We devise a protocol in
Liu, Rongkuan   +2 more
core   +1 more source

Capacity theorems for quantum multiple access channels [PDF]

open access: yesProceedings. International Symposium on Information Theory, 2005. ISIT 2005., 2005
We consider quantum channels with two senders and one receiver. For an arbitrary such channel, we give multi-letter characterizations of two different two-dimensional capacity regions. The first region characterizes the rates at which it is possible for one sender to send classical information while the other sends quantum information.
Yard, Jon   +2 more
openaire   +2 more sources

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Effective Throughput of Cognitive Multiple Access Channel Under Collision Constraints and Imperfect Sensing

open access: yesDianxin kexue, 2015
The problem of effective throughput of multiple secondary users access to the spectrum of primary user in the cognitive multiple access channel under collision constraints and imperfect channel state information was discussed.
Zhengying Xiao   +2 more
doaj   +2 more sources

Channel-Aware Multichannel Random Access for Energy-Limited Sensors and MTC Devices

open access: yesIEEE Access, 2018
In machine-type communications (MTC) or wireless sensor networks (WSNs), since MTC devices or sensors have limited supply of energy, energy efficient transmission schemes are important.
Jinho Choi
doaj   +1 more source

On a Multiple-Access in a Vector Disjunctive Channel

open access: yes, 2013
We address the problem of increasing the sum rate in a multiple-access system from [1] for small number of users. We suggest an improved signal-code construction in which in case of a small number of users we give more resources to them.
Fischer, Robert   +3 more
core   +1 more source

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

open access: yesFEBS 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   +3 more
wiley   +1 more source

Broadcasting in ad hoc multiple access channels [PDF]

open access: yesTheoretical Computer Science, 2013
We study broadcast in multiple access channels in dynamic adversarial settings. There is an unbounded supply of anonymous stations attached to a synchronous channel. There is an adversary who injects packets into stations to be broadcast on the channel.
Lakshmi Anantharamu, Bogdan S. Chlebus
openaire   +3 more sources

Aggressive prostate cancer is associated with pericyte dysfunction

open access: yesMolecular Oncology, EarlyView.
Tumor‐produced TGF‐β drives pericyte dysfunction in prostate cancer. This dysfunction is characterized by downregulation of some canonical pericyte markers (i.e., DES, CSPG4, and ACTA2) while maintaining the expression of others (i.e., PDGFRB, NOTCH3, and RGS5).
Anabel Martinez‐Romero   +11 more
wiley   +1 more source

One-Shot Multiple Access Channel Simulation

open access: yes2024 IEEE International Symposium on Information Theory (ISIT)
Total 42 pages, main text 23 pages, References and Appendices 19 pages, 2 ...
Nema, Aditya   +2 more
openaire   +2 more sources

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