Results 31 to 40 of about 1,051,474 (226)

Distributed Structure: Joint Expurgation for the Multiple-Access Channel [PDF]

open access: yes, 2012
In this work we show how an improved lower bound to the error exponent of the memoryless multiple-access (MAC) channel is attained via the use of linear codes, thus demonstrating that structure can be beneficial even in cases where there is no capacity ...
Erez, Uri, Haim, Eli, Kochman, Yuval
core   +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 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   +2 more sources

ZF-SIC Based Individual Secrecy in SIMO Multiple Access Wiretap Channel

open access: yesIEEE Access, 2017
In this paper, a decoding method of joint zero-forcing and successive interference cancellation (ZF-SIC) is put forward to assist the study of the individual secrecy in the quasi-static Rayleigh fading single-input multiple-output multiple access wiretap
Kaiwei Jiang   +4 more
doaj   +1 more source

Optimizing Information Freshness in a Multiple Access Channel With Heterogeneous Devices

open access: yesIEEE Open Journal of the Communications Society, 2021
In this work, we study age-optimal scheduling with stability constraints in a multiple access channel with two heterogeneous source nodes transmitting to a common destination.
Zheng Chen   +3 more
doaj   +1 more source

Source-Channel Coding Theorems for the Multiple-Access Relay Channel

open access: yes, 2013
We study reliable transmission of arbitrarily correlated sources over multiple-access relay channels (MARCs) and multiple-access broadcast relay channels (MABRCs). In MARCs only the destination is interested in reconstructing the sources, while in MABRCs
Dabora, Ron   +2 more
core   +1 more source

On Separation for Multiple Access Channels [PDF]

open access: yes, 2007
We examine the issue of separation for multiple access channels. We demonstrate that source-channel separation holds for noisy multiple access channels, when the channel operates over a common finite field.
Effros, Michelle   +3 more
core   +1 more source

A Jamming-Resilient and Scalable Broadcasting Algorithm for Multiple Access Channel Networks

open access: yesApplied Sciences, 2021
Multiple access channel (MAC) networks use a broadcasting algorithm called the Binary Exponential Backoff (BEB) to mediate access to the shared communication channel by competing nodes and resolve their collisions.
Bader A. Aldawsari, Jafar Haadi Jafarian
doaj   +1 more source

Compound Multiple Access Channel with Confidential Messages

open access: yes, 2014
In this paper, we study the problem of secret communication over a Compound Multiple Access Channel (MAC). In this channel, we assume that one of the transmitted messages is confidential that is only decoded by its corresponding receiver and kept secret ...
Ahmadian-Attari, Mahmoud   +3 more
core   +1 more source

Novel half-duplex relay strategy and its resource allocation

open access: yesTongxin xuebao, 2009
Conventional time-division half-duplex relay strategies based on amplify-and-forward or decode-and-forward strategy could relieve relay nodes from full-duplex requirement but lead to degraded spectrum efficiency.
LI Yong   +3 more
doaj   +2 more sources

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