Results 41 to 50 of about 2,065,034 (119)

An multi-BSS multi-user full duplex MAC protocol based on AP cooperation for the next generation WLAN

open access: yesXibei Gongye Daxue Xuebao, 2021
Aiming at the problems of low efficiency of buffer information collection and sharp drop of system throughput caused by the aggravation of conflicts in the multi basic service set (BSS) high density deployment overlap coverage scenario of next generation

doaj   +1 more source

Joint source-channel coding for a quantum multiple access channel [PDF]

open access: yes, 2012
Suppose that two senders each obtain one share of the output of a classical, bivariate, correlated information source. They would like to transmit the correlated source to a receiver using a quantum multiple access channel. In prior work, Cover, El Gamal,
Datta N   +16 more
core   +3 more sources

An Analysis on Contemporary MAC Layer Protocols in Vehicular Networks: State-of-the-Art and Future Directions

open access: yesFuture Internet, 2021
Traffic density around the globe is increasing on a day-to-day basis, resulting in more accidents, congestion, and pollution. The dynamic vehicular environment induces challenges in designing an efficient and reliable protocol for communication.
Lopamudra Hota   +4 more
doaj   +1 more source

Cognition and Cooperation in Interfered Multiple Access Channels

open access: yesEntropy, 2017
In this work, we investigate a three-user cognitive communication network where a primary two-user multiple access channel suffers interference from a secondary point-to-point channel, sharing the same medium. While the point-to-point channel transmitter—
Jonathan Shimonovich   +2 more
doaj   +1 more source

To Sense or Not To Sense [PDF]

open access: yes, 2012
A longer sensing time improves the sensing performance; however, with a fixed frame size, the longer sensing time will reduce the allowable data transmission time of the secondary user (SU).
Shafie, Ahmed El
core  

The Capacity of the Quantum Multiple Access Channel

open access: yes, 2001
We define classical-quantum multiway channels for transmission of classical information, after recent work by Allahverdyan and Saakian. Bounds on the capacity region are derived in a uniform way, which are analogous to the classically known ones, simply ...
Winter, Andreas
core   +2 more sources

Can Negligible Cooperation Increase Network Reliability? [PDF]

open access: yes, 2016
In network cooperation strategies, nodes work together with the aim of increasing transmission rates or reliability. This paper demonstrates that enabling cooperation between the transmitters of a two-user multiple access channel, via a cooperation ...
Effros, Michelle   +2 more
core   +2 more sources

Channel Contention Delay Optimization Mechanism for 802.15.4 Network MAC Layer with Unsaturated Load [PDF]

open access: yesJisuanji gongcheng, 2016
To reduce the delay of channel contention at the Medium Access Control(MAC) layer for IEEE 802.15.4 networks,a channel contention mechanism for nodes,with unsaturated load is designed.A mathematical model is built and a derivation is carried on to obtain
CHENG Hongbin,WANG Xiaonan,SUN Xia,LE Deguang
doaj   +1 more source

Achievable Rates for Two-Way Wire-Tap Channels

open access: yes, 2007
We consider two-way wire-tap channels, where two users are communicating with each other in the presence of an eavesdropper, who has access to the communications through a multiple-access channel. We find achievable rates for two different scenarios, the
Tekin, Ender, Yener, Aylin
core   +2 more sources

On the Multiple Access Channel with Asynchronous Cognition

open access: yes, 2016
In this paper we introduce the two-user asynchronous cognitive multiple access channel (ACMAC). This channel model includes two transmitters, an uninformed one, and an informed one which knows prior to the beginning of a transmission the message which ...
Leshem, Amir   +2 more
core   +1 more source

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