Results 21 to 30 of about 19,525 (187)

Optimal Time Allocation in Backscatter Assisted Wireless Powered Communication Networks

open access: yesSensors, 2017
This paper proposes a wireless powered communication network (WPCN) assisted by backscatter communication (BackCom). This model consists of a power station, an information receiver and multiple users that can work in either BackCom mode or harvest-then ...
Bin Lyu   +3 more
doaj   +1 more source

Performance Analysis of TDMA Protocol in a Femtocell Network [PDF]

open access: yesMehran University Research Journal of Engineering and Technology, 2014
In this paper, we evaluate the performance of TDMA (Time Division Multiple Access) protocol using queuing theory in a femtocell network. The fair use of wireless channel among the users of network is carried out using TDMA protocol.
Wanod Kumar   +2 more
doaj  

Theoretical Investigation into Spectral Coexistence of CDMA and TDMA Systems

open access: yesThe Journal of Engineering Research, 2008
The scarcity of available radio spectrum presently limits the extension of modern multimedia systems. This paper presents a theoretical investigation into the possibility of using a frequency overlay of a narrowband Code Division Multiple Access (CDMA ...
A.M. Abbosh, M. A. Shehathah
doaj   +1 more source

A Link Distance Division Based Time Division Multiple Access Protocol for Directional Aeronautical Relay Networks

open access: yesXibei Gongye Daxue Xuebao, 2020
In directional aeronautical relay networks, the airplane relay explores the advantages of the directional antenna, in terms of long transmission distance, low transmission power, small interference range and so on, to help the ground nodes transmitting ...

doaj   +1 more source

A TDMA-based cooperative MAC protocol for cognitive networks with opportunistic energy harvesting [PDF]

open access: yes, 2016
In this article, a cooperative medium access control (MAC) protocol called cooperative cognitive TDMA (CC-TDMA) for cognitive networks is proposed, which is based on time division multiple access (TDMA).
Khabazian, Mehdi   +2 more
core   +1 more source

Research on TDMA Time Slot Allocation Protocol in MAC Layer of LoRa Wireless Network [PDF]

open access: yesJisuanji gongcheng, 2019
The polling protocol is a classic Media Access Control(MAC) layer Time Division Multiple Access(TDMA) time slot allocation protocol,which has the characteristics of collision-free data communication and low power consumption,but it cannot guarantee ...
LI Minzheng, ZI Wenbin, WANG Hao
doaj   +1 more source

Hybrid NOMA-TDMA for Multiple Access Channels with Non-Ideal Batteries and Circuit Cost

open access: yes, 2018
We consider a multiple-access channel where the users are powered from batteries having non-negligible internal resistance. When power is drawn from the battery, a variable fraction of the power, which is a function of the power drawn from the battery ...
Bhat, Rajshekhar Vishweshwar   +2 more
core   +1 more source

The comparison of time division multiple access (TDMA) (global system for mobile communication, GSM) and wideband-code division multiple access (W-CDMA) (third generation, 3G) system based on their modulation techniques

open access: yesInternational Journal of Computer Engineering Research, 2014
Mobile network communication system offers the users with seamless communication and this has caused wireless communication to increasingly become the preferred method of carrying multimedia traffic or messages such as voice, video, images, and data files.
Olamide O. Olusanya, Abiodun A. Ogunseye
openaire   +2 more sources

Intelligent TDMA heuristic scheduling by taking into account physical layer interference for an industrial IoT environment [PDF]

open access: yes, 2017
In an Internet of Things environment, where multiple mobile devices are brought together, it is not always possible to serve all these devices simultaneously. We developed an intelligent Time Division Multiple Access (TDMA) scheduler which allows to plan
De Poorter, Eli   +7 more
core   +1 more source

Over-the-Air Computation Strategy Using Space–Time Line Code for Data Collection by Multiple Unmanned Aerial Vehicles

open access: yesIEEE Access, 2021
In this study, we investigated a data collection system for multiple unmanned aerial vehicles (UAVs) in the sky. To reduce the required data collection time for a time-division multiple access (TDMA)-based protocol, an over-the-air computation (OAC ...
Jingon Joung, Jiancun Fan
doaj   +1 more source

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