We investigate the quality of service (QoS -aware scheduling problem for downlink cooperative orthogonal freQoS -awareischedulingproblemess systems.
In this article, we propose a semi-distributed resource allocation framework for the resource optimization in multi-cell uplink cooperative orthogonal frequency division multiplexing systems.
In this article, we investigate the information-theoretical performance of a cooperative orthogonal frequency division multiplexing (OFDM) system with imperfect channel estimation.
To support such an ambitious goal, multiple-input multiple-output (MIMO) communications and cooperative orthogonal frequency division multiplexing (OFDM) relaying techniques play a key role in enhancing spectral efficiency and improving link reliability.
Owing to its potential to realize high-rate and reliable communications over wireless channels, cooperative orthogonal frequency division multiplexing (OFDM) technology has drawn extensive attention in recent years as a critical 4G technology.
In this paper, a joint subcarrier and power allocation algorithm is proposed to improve the physical layer security in cooperative orthogonal frequency division multiple access (OFDMA) networks, where several source-destination pairs and one untrusted relay are involved.
The chief value of the practice of promising is social coordination and cooperation promises (and cognate phenomena like contracts and agreements) allow people to trust one another, which in turn allows for all sorts of cooperative benefits, e.g., divisions of labor, solutions to coordination problems and collective action problems, exits from prisoners dilemmas, etc.
Along with their cousins, the naked mole rats, Damaraland mole rats are the only mammals considered to be eusocial, meaning that as with ants and some other insects mole rat reproduction is a cooperative affair, with a division of labor.
In this study, we investigate the use of cooperative half duplex time division relay protocols to possibly provide power savings, achievable rate improvements, and coverage extension to the in-home PLC networks whose communication devices adopt multi-carrier modulation at the physical (PHY) layer, i.e., orthogonal frequency division multiplexing (OFDM) [1].
