Results 31 to 40 of about 1,292,199 (328)

An iterative Power Allocation Alogrithm for Energy Efficiency Optimization in Massive MIMO Systems [PDF]

open access: yesEAI Endorsed Transactions on Internet of Things, 2017
In this paper, a transmitting power allocation strategy for users jointed together pre-coding is presented to eliminate inter-users interference and improve the energy efficiency of Massive MIMO systems.
Yuanyuan Ren, Panpan Miao, Yanhui Lu
doaj   +1 more source

Downlink Power Allocation for CR-NOMA-Based Femtocell D2D Using Greedy Asynchronous Distributed Interference Avoidance Algorithm

open access: yesComputers, 2023
This paper focuses on downlink power allocation for a cognitive radio-based non-orthogonal multiple access (CR-NOMA) system in a femtocell environment involving device-to-device (D2D) communication. The proposed power allocation scheme employs the greedy
Nahla Nur Elmadina   +6 more
doaj   +1 more source

Optimal Power Allocation over Multiple Identical Gilbert-Elliott Channels

open access: yes, 2013
We study the fundamental problem of power allocation over multiple Gilbert-Elliott communication channels. In a communication system with time varying channel qualities, it is important to allocate the limited transmission power to channels that will be ...
Krishnamachari, Bhaskar   +2 more
core   +1 more source

High Speed Railway Wireless Communications: Efficiency v.s. Fairness

open access: yes, 2014
High speed railways (HSRs) have been deployed widely all over the world in recent years. Different from traditional cellular communication, its high mobility makes it essential to implement power allocation along the time.
Dong, Yunquan   +2 more
core   +2 more sources

The Optimal Allocation of Power in Organizations [PDF]

open access: yesSSRN Electronic Journal, 2000
Starting from the separation between formal and real authority, the paper considers a hierarchical relation where delegation of control can be used as an incentive mechanism. It shows that delegation is optimal when parties’ interests are neither too divergent nor too close.
openaire   +4 more sources

Energy-efficient power allocation for point-to-point MIMO systems over the rayleigh fading channel [PDF]

open access: yes, 2012
It is well-established that transmitting at full power is the most spectral-efficient power allocation strategy for point-to-point (P2P) multi-input multi-output (MIMO) systems, however, can this strategy be energy efficient as well?
Héliot, Fabien   +2 more
core   +1 more source

Land use change patterns and landscape ecological risk assessment in the process of watershed ecological compensation

open access: yesFrontiers in Environmental Science
As China’s pioneering cross-provincial ecological compensation zone, the upper Xin’an River Basin harbors immense ecological value. However, the long-term effects of its compensation policies on land use dynamics and associated landscape ecological risks
Haitao Chen   +8 more
doaj   +1 more source

Digital-Twin-Assisted Edge-Computing Resource Allocation Based on the Whale Optimization Algorithm

open access: yesSensors, 2022
With the rapid increase of smart Internet of Things (IoT) devices, edge networks generate a large number of computing tasks, which require edge-computing resource devices to complete the calculations.
Shaoming Qiu   +6 more
doaj   +1 more source

A General MIMO Framework for NOMA Downlink and Uplink Transmission Based on Signal Alignment [PDF]

open access: yes, 2015
The application of multiple-input multiple-output (MIMO) techniques to non-orthogonal multiple access (NOMA) systems is important to enhance the performance gains of NOMA. In this paper, a novel MIMO-NOMA framework for downlink and uplink transmission is
Ding, Zhiguo   +2 more
core   +2 more sources

Joint subchannel power allocation for downlink NOMA systems based on quantum carnivorous plant algorithm

open access: yesJournal of King Saud University: Computer and Information Sciences
Currently, most existing research on non-orthogonal multiple access (NOMA) systems converts power allocation into two independent procedures, i.e., inter-subchannel power allocation and intra-subchannel power allocation.
Hongyuan Gao   +3 more
doaj   +1 more source

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