Results 1 to 10 of about 438,180 (116)

A simple Encoding Scheme to Achieve the Capacity of Half-Duplex Relay Channel

open access: yesAdvances in Electrical and Electronic Engineering, 2022
In this paper, the Half-Duplex Relay Channel (HDRC) is thoroughly investigated. Even though this channel model is widely studied, the capacity is not yet fully understood and particularly has not been tightly expressed.
Zouhair Al-qudah, Khalid Ahmad Darabkh
doaj   +1 more source

Secrecy Rate Region Enhancement in Multiple Access Wiretap Channel

open access: yesJournal of Telecommunications and Information Technology, 2022
It is commonly known that physical layer security is achieved with a trade-off in terms of the achievable rate. Hence, security constraints generate rate losses in wiretap channels.
Shahid Mehraj Shah
doaj   +1 more source

Information Rates on a Symbol-Asynchronous Multi-Access Channel

open access: yesIEEE Open Journal of the Communications Society, 2020
Capacity of uncoordinated multiple access channel (MAC) with single-user demodulation has been studied in literature under various assumptions for symbol-synchronous transmission.
Salman A. Khan, Jan Bajcsy
doaj   +1 more source

The Broadcast Approach in Communication Networks

open access: yesEntropy, 2021
In this paper we review the theoretical and practical principles of the broadcast approach to communication over state-dependent channels and networks in which the transmitters have access to only the probabilistic description of the time-varying states ...
Ali Tajer   +2 more
doaj   +1 more source

Secrecy over Multiple-Access Channel: A Game of Competition and Cooperation [PDF]

open access: yesJournal of Universal Computer Science, 2019
Communication networks have had a transformative impact on our society as they have revolutionized almost all aspects of human interaction. The explosive growth of data traffic has led to an increased demand on improving the reliability, efficiency and ...
Yanling Chen   +2 more
doaj   +3 more sources

New Bounds on Capacity Region of Multiple Access Channels in Visible Light Communications

open access: yesEntropy, 2022
In this paper, we propose new inner and outer bounds of the capacity region for multiple access channels in visible light communication (VLC) networks under both peak and average optical power constraints.
Ruixin Yang   +5 more
doaj   +1 more source

Multiple Access Relay Channel With Relay-Sources Feedback

open access: yesIEEE Access, 2018
Feedback analysis on the rate region of multi-user channels is a problem of great importance in information and communication theory. In this paper, the Slepian-Wolf multiple access relay channel (SW-MARC) with relay-sources feedback is studied as a more
Ehsan Moeen Taghavi   +1 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

Security performance analysis for cell-free massive multiple-input multiple-output system with multi-antenna access points deployment in presence of active eavesdropping

open access: yesInternational Journal of Distributed Sensor Networks, 2022
This article investigates the influence of multiple-antenna deployment at access points on physical layer security under cell-free massive multiple-input multiple-output systems.
Xiaoyu Wang   +4 more
doaj   +1 more source

On Achievable Distortion in Sending Gaussian Sources over a Bandwidth-Matched Gaussian MAC with No Transmitter CSI

open access: yesEntropy, 2019
This paper investigates the minimum mean square error (MMSE) of communicating a pair of Gaussian sources over a a bandwidth-matched Gaussian multiple-access channel with block Rayleigh fading in the absence of channel state information (CSI) at the ...
Chathura Illangakoon, Pradeepa Yahampath
doaj   +1 more source

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