Results 31 to 40 of about 2,093,139 (198)

Time-Reversal Division Multiple Access in Multi-Path Channels [PDF]

open access: yes2011 IEEE Global Telecommunications Conference - GLOBECOM 2011, 2011
Multi-path effect makes high speed broadband communications a very challenging task due to the severe inter-symbol interference (ISI). By concentrating energy in both spatial and temporal domains, time-reversal (TR) transmission technique provides a great potential of low-complexity energy-efficient communications.
null Feng Han   +4 more
openaire   +1 more source

Channel Allocation for Connected Vehicles in Internet of Things Services

open access: yesSensors, 2021
Based on the existing Internet of Vehicles communication protocol and multi-channel allocation strategy, this paper studies the key issues with vehicle communication.
Ahmed Abdulhakim Al-Absi   +3 more
doaj   +1 more source

A Novel Flow-Aware Fair Scheduler for Multi Transmit/Receive Wireless Networks

open access: yesIEEE Access, 2017
This paper considers the problem of deriving a time-division multiple-access (TDMA) schedule for multi-hop wireless networks that allow nodes to perform multiple transmissions/receptions to/from all of their neighbors simultaneously over the same ...
Luyao Wang   +3 more
doaj   +1 more source

A Hybrid Anti-Collision Protocol Based on Frequency Division Multiple Access (FDMA) and Time Division Multiple Access (TDMA) for Radio Frequency Identification (RFID) Readers

open access: yesNetwork
Radio Frequency Identification (RFID) technology plays a crucial role in various Internet of Things (IoT) applications, necessitating the integration of RFID systems into dense networks.
Mourad Ouadou   +2 more
doaj   +1 more source

Resource allocation and passive beamforming for IRS‐assisted short packet systems

open access: yesIET Communications
This paper investigates an intelligent reflecting surface (IRS) assisted downlink short packet transmission system, where an access point sends short packets to multiple devices with the help of an IRS.
Yangyi Zhang   +4 more
doaj   +1 more source

Decision fusion for composite hypothesis testing in wireless sensor networks over a shared and noisy collision channel

open access: yesInternational Journal of Distributed Sensor Networks, 2020
We consider the composite hypothesis testing problem of time-bandwidth-constrained distributed detection. In this scenario, the probability distribution of the observed signal when the event of interest is happening is unknown.
Seksan Laitrakun
doaj   +1 more source

Local Multicoloring Algorithms: Computing a Nearly-Optimal TDMA Schedule in Constant Time [PDF]

open access: yes, 2009
The described multicoloring problem has direct applications in the context of wireless ad hoc and sensor networks. In order to coordinate the access to the shared wireless medium, the nodes of such a network need to employ some medium access control (MAC)
Kuhn, Fabian
core   +4 more sources

Design and Modeling Optimization of Topology-transparent Time Division Multiple Access Protocol for Aeronautical Ad Hoc Network [PDF]

open access: yesJisuanji gongcheng, 2016
Aeronautical Ad Hoc Network(AANET) allows nodes to communicate though single hop or multi-hip way,and it does not need to rely on the ground control center.It provides flexible network architecture for aeronautical communication.Aiming at this ...
CAI Shengsuo,LEI Lei,ZHU Majun,DONG Tao
doaj   +1 more source

Analysis of Serial Search Based Code Acquisition in the Multiple Transmit/Multiple Receive Antenna Aided DS-CDMA Downlink, [PDF]

open access: yes, 2008
—In this paper, we investigate the serial-search-based initial code-acquisition performance of direct-sequence code division multiple access (DS-CDMA) employing multiple transmit/multiple receive antennas when communicating over uncorrelated Rayleigh ...
Hanzo, Lajos, Won, Seung
core   +1 more source

Multiple Access Trade Study [PDF]

open access: yes, 1990
The Personal Access Satellite System (PASS) strawman design uses a hybrid Time Division Multiple Access (TDMA)/Frequency Division Multiple Access (FDMA) implementation.
Motamedi, Masoud
core   +1 more source

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