Results 21 to 30 of about 16,777,617 (240)

The Gaussian Multiple Access Diamond Channel [PDF]

open access: yesIEEE Transactions on Information Theory, 2011
In this paper, we study the capacity of the diamond channel. We focus on the special case where the channel between the source node and the two relay nodes are two separate links with finite capacities and the link from the two relay nodes to the destination node is a Gaussian multiple access channel.
Wei Kang 0002   +2 more
openaire   +5 more sources

Hybrid Iterative Multiuser Detection for Channel Coded Space Division Multiple Access OFDM Systems [PDF]

open access: yes, 2006
Space division multiple access (SDMA) aided orthogonal frequency division multiplexing (OFDM) systems assisted by efficient multiuser detection (MUD) techniques have recently attracted intensive research interests.
Jiang, M., Ng, S. X., Hanzo, L.
core   +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

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

Adaptive delayed channel access for IEEE 802.11n WLANs [PDF]

open access: yes, 2008
— In this paper we investigate potential benefits that an adaptive delayed channel access algorithm can attain for the next-generation wireless LANs, the IEEE 802.11n.
Ni, Q, Skordoulis, D, Min, G, Borg, K
core   +7 more sources

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

On a multiple-access in a vector disjunctive channel [PDF]

open access: yes2013 IEEE International Symposium on Information Theory, 2013
We address the problem of increasing the sum rate in a multiple-access system from [1] for small number of users. We suggest an improved signal-code construction in which in case of a small number of users we give more resources to them. For the resulting multiple-access system a lower bound on the relative sum rate is derived.
Alexey A. Frolov   +3 more
openaire   +3 more sources

MIMO Multiple Access Channels with Partial Channel State Information [PDF]

open access: yes, 2010
The increasing demand for wireless communication systems has been the starting point for many research activities and discussions about the best way to make a cleaver usage of the available spectrum and the available power, in order to satisfy the ...
Aubry, Augusto
core   +1 more source

A Formulation of the Channel Capacity of Multiple-Access Channel [PDF]

open access: yesIEEE Transactions on Information Theory, 2009
The necessary and sufficient condition of the channel capacity is rigorously formulated for the N-user discrete memoryless multiple-access channel (MAC). The essence of the formulation is to invoke an {\em elementary} MAC where sizes of input alphabets are not greater than the size of output alphabet.
Yoichiro Watanabe, Koichi Kamoi
openaire   +3 more sources

A predefined channel coefficients library for vehicle-to-vehicle communications [PDF]

open access: yes, 2015
It is noticeable that most of VANETs communications tests are assessed through simulation. In a majority of simulation results, the physical layer is often affected by an apparent lack of realism.
Turner, Scott J   +5 more
core   +1 more source

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