Results 21 to 30 of about 1,422,467 (276)

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

Homologous Codes for Multiple Access Channels [PDF]

open access: yesIEEE Transactions on Information Theory, 2017
Building on recent development by Padakandla and Pradhan, and by Lim, Feng, Pastore, Nazer, and Gastpar, this paper studies the potential of structured nested coset coding as a complete replacement for random coding in network information theory. The roles of two techniques used in nested coset coding to generate nonuniform codewords, namely, shaping ...
Pinar Sen, Young-Han Kim
openaire   +2 more sources

Faster Deterministic Wakeup in Multiple Access Channels [PDF]

open access: yesDiscrete Applied Mathematics, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
DE MARCO, Gianluca   +2 more
openaire   +9 more sources

Compound Multiple-Access Channels With Partial Cooperation [PDF]

open access: yesIEEE Transactions on Information Theory, 2009
A two-user discrete memoryless compound multiple access channel with a common message and conferencing decoders is considered. The capacity region is characterized in the special cases of physically degraded channels and unidirectional cooperation, and achievable rate regions are provided for the general case.
O. Simeone   +4 more
openaire   +3 more sources

Analysis of factors affecting the operation of the communication system with nonorthogonal multiple access [PDF]

open access: yesITM Web of Conferences, 2019
NOMA is a group of non-orthogonal multiple access methods [1]. In this article, we talk about the Power Domain (Division) NOMA method. It is a non-orthogonal multiple access method with channel separation by power [2].
Rogozhnikov Eugeniy   +4 more
doaj   +1 more source

Is NOMA Efficient in Multi-Antenna Networks? A Critical Look at Next Generation Multiple Access Techniques

open access: yesIEEE Open Journal of the Communications Society, 2021
In the past few years, a large body of literature has been created on downlink Non-Orthogonal Multiple Access (NOMA), employing superposition coding and Successive Interference Cancellation (SIC), in multi-antenna wireless networks.
Bruno Clerckx   +9 more
doaj   +1 more source

Random access over multiple access channels: A queuing perspective [PDF]

open access: yes2008 42nd Annual Conference on Information Sciences and Systems, 2008
This paper investigates a slotted random access system where packet capture is modeled using communication theoretic techniques. It is shown that the optimum rates and attempt probabilities depend on the receiver architecture, operating signal-to-noise ratio (SNR) and block length.
Bodas, Shreeshankar   +2 more
openaire   +2 more sources

Non‐orthogonal multiple access without channel state information for similar channel conditions

open access: yesElectronics Letters, 2019
A downlink non‐orthogonal multiple access with QPSK input constellations based on virtual channel optimisation is presented to address the similar channel conditions scenario.
Wenlong Xia   +3 more
doaj   +1 more source

Polar Coding for the Multiple Access Channel With Confidential Messages

open access: yesIEEE Access, 2020
The multiple access channel with confidential messages (MAC-CM) generalizes the traditional multiple access channel by allowing both users to receive channel outputs.
Haowei Wang   +3 more
doaj   +1 more source

Performance of Downlink NOMA for a Massive IoT Network Over a Nakagami-m Fading Channel With Optimized Power Allocation

open access: yesIEEE Access, 2023
Non-orthogonal multiple access (NOMA) is a multiple access technology that can provide efficient spectrum utilization and increased channel capacity on Internet of Things (IoT) networks.
Rummi Sirait   +2 more
doaj   +1 more source

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