Results 71 to 80 of about 232,767 (181)

Broadcasting over the Relay Channel with Oblivious Cooperative Strategy

open access: yes, 2010
This paper investigates the problem of information transmission over the simultaneous relay channel with two users (or two possible channel outcomes) where for one of them the more suitable strategy is Decode-and-Forward (DF) while for the other one is ...
Behboodi, Arash, Piantanida, Pablo
core   +2 more sources

Efficient broadcast transmission algorithms based on opportunistic network coding

open access: yesTongxin xuebao, 2012
Opportunistic network coding (ONC) based broadcast transmission algorithms were proposed to improve the transmission efficiency for wireless single-hop networks.Based on the traditional wireless broadcast transmission model,ONC based solo combination ...
Ji LU, Cheng-ke WU, Song XIAO, Ran ZHANG
doaj   +2 more sources

On the Design of Tailored Neural Networks for Energy Harvesting Broadcast Channels: A Reinforcement Learning Approach

open access: yesIEEE Access, 2020
In this paper, we consider a power allocation optimization technique for a time-varying fading broadcast channel in energy harvesting communication systems, in which a transmitter with a rechargeable battery transmits messages to receivers using the ...
Heasung Kim   +6 more
doaj   +1 more source

The Arbitrarily Varying Broadcast Channel with Degraded Message Sets with Causal Side Information at the Encoder

open access: yes, 2017
In this work, we study the arbitrarily varying broadcast channel (AVBC), when state information is available at the transmitter in a causal manner. We establish inner and outer bounds on both the random code capacity region and the deterministic code ...
Pereg, Uzi, Steinberg, Yossef
core   +1 more source

Nonconcave Utility Maximisation in the MIMO Broadcast Channel

open access: yesEURASIP Journal on Advances in Signal Processing, 2008
The problem of determining an optimal parameter setup at the physical layer in a multiuser, multiantenna downlink is considered. An aggregate utility, which is assumed to depend on the users' rates, is used as performance metric.
Wolfgang Utschick, Johannes Brehmer
doaj   +1 more source

Sum Capacity for Single-Cell Multi-User Systems with M-Ary Inputs

open access: yesEntropy, 2017
This paper investigates the sum capacity of a single-cell multi-user system under the constraint that the transmitted signal is adopted from M-ary two-dimensional constellation with equal probability for both uplink, i.e., multiple access channel (MAC ...
Pei Yang   +3 more
doaj   +1 more source

Stable Transmission in the Time-Varying MIMO Broadcast Channel

open access: yesEURASIP Journal on Advances in Signal Processing, 2008
Both linear and nonlinear transmit precoding strategies based on accurate channel state information (CSI) can significantly increase available throughput in a multiuser wireless system.
Michael A. Jensen   +2 more
doaj   +1 more source

On Minimum-Latency Broadcast in Multichannel Duty-Cycled Wireless Sensor Networks

open access: yesInternational Journal of Distributed Sensor Networks, 2015
Broadcast has critical significance for wide application of wireless sensor networks (WSNs). Minimum-latency broadcast (MLB) studies how to devise a broadcast schedule, which can achieve minimum broadcast latency with no signal interference.
Xianlong Jiao   +3 more
doaj   +1 more source

Two-Relay Decode-and-Forward for the Degraded Broadcast Channel: Achievable Rate Region With Orthogonal Channel Components

open access: yesIEEE Open Journal of the Communications Society
Relay-aided transmission is a promising approach to extend coverage and increase throughput in wireless networks, yet characterizing the achievable rate region of broadcast channels with multiple decode-and-forward relays over orthogonal links remains an
Mohammad Al Bataineh   +2 more
doaj   +1 more source

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