Results 91 to 100 of about 27,992 (204)

Study on Additional Carrier Sensing for IEEE 802.15.4 Wireless Sensor Networks

Sensors, 2010
Wireless sensor networks based on the IEEE 802.15.4 standard are able to achieve low-power transmissions in the guise of low-rate and short-distance wireless personal area networks (WPANs).
Bih-Hwang Lee, Ruei-Lung Lai, Huai-Kuei Wu, Chi-Ming Wong   +3 more
doaj   +1 more source

Medium Access Control Layer for Internet of Things Edge-Side Network Using Carrier-Sense Multiple Access Protocol

Engineering Proceedings
The Internet of Things (IoT) has recently received a great deal of research interest due to its broad range of applications. One of the important layers in IoT applications is known as edge computing where resource-constrained devices at the edge form a ...
Selahattin Kosunalp, Sami Acik
doaj   +1 more source

ADNP-CSMA Random Multiple Access protocol application with the function of monitoring in Ad Hoc network

MATEC Web of Conferences, 2016
In Ad Hoc networks,the net work of mobile nodes exchange information with their wireless transceiver equipment,the network throughput is in increased,compared to other such multiple hops network.Moreover along with the rapid development of modern ...
Zhan Gang, Zhao Yi Fan, Ding Hong Wei, Zhou Sheng Jie, Liu Long Jun, Xu Zhi   +5 more
doaj   +1 more source

Immunomodulatory exosomes loaded chitosan methacryloyl hydrogel combined with pro-chondrogenic microspheres for promoting articular cartilage regeneration

Materials & Design
A diverse range of biological materials has been widely used for the management of injuries to joint cartilage. However, suboptimal outcomes in cartilage repair are often due to inappropriate host immune responses and inadequate microenvironments for ...
Ruoyu Liang, Zhaoxu Li, Qu Xu, Shengtao Wang, Dongxu Chen, Peng Gui, Mingzhou Chen, Wei Peng, Jian Su   +8 more
doaj   +1 more source

Performance analysis of distributed cluster-based MAC protocol for multiuser MIMO wireless networks

EURASIP Journal on Wireless Communications and Networking, 2011
It is known that multiuser multiple-input multiple-output (MIMO) communication can enhance the performance of wireless networks. It can substantially increase the spectral efficiency of wireless networks by utilising multiuser interference rather than ...
Ettefagh Azadeh, Kuhn Marc, Eşli Celal, Wittneben Armin   +3 more
doaj  

Advent of PHY and MAC Layer Operations in Wireless and Local Personal Area Network [PDF]

ICTACT Journal on Communication Technology, 2013
Carrier sense multiple access with collision avoidance (CSMA-CA) algorithm is implemented on AT86RF230 Trans-receiver, which is done in Physical layer. As the number of nodes is increased, power efficiency of CSMA-CA algorithm is decreased.
Shama B N
doaj  

Pseudo-Bayesian stability of CSMA and CSMA/CD local area networks

, 1988
This thesis investigates the stability of the random multiaccess protocols, slotted CSMA and slotted CSMA/CD, utilizing one power level and two power levels to create beneficial power capture effect. Use of more than two equally spaced power levels provides no significant improvement in the throughput achievable when realistic capture thresholds are ...
openaire   +1 more source

Simulation Research of 2.4 GHz IEEE 802.15.4 Network Based on ABE Algorithm

Gong-kuang zidonghua, 2010
For problems of data-package collision and network degradation caused by slotted CSMA/CA standard algorithm used in MAC layer of IEEE 802.15.4 network, the paper used ABE algorithm to improve the standard algorithm, and used NS-2 software to simulate ...
SHENG Xi-ning
doaj  

4D-printed Fe3O4-PLLA scaffolds modulate osteoimmune microenvironment for oral bone repair. [PDF]

Mater Today Bio
Song W, Huang W, Du Z, Xiao C, Qu J, Xu W, Liu X.   +6 more
europepmc   +1 more source

Prognostic evaluation of sarcopenia with radiological and laboratory parameters in geriatric head and neck cancer patients. [PDF]

Discov Oncol
Basaran Goksen H, Uylar Seber T, Arslan A.   +2 more
europepmc   +1 more source