Results 41 to 50 of about 7,843,751 (374)

Green communication via Type-I ARQ: Finite block-length analysis [PDF]

, 2014
This paper studies the effect of optimal power allocation on the performance of communication systems utilizing automatic repeat request (ARQ). Considering Type-I ARQ, the problem is cast as the minimization of the outage probability subject to an ...
Makki, Behrooz, Svensson, Tommy, Zorzi, Michele   +2 more
core   +2 more sources

Performance Evaluation of Successive Interference Cancellation on Gain Ratio Power Allocation using Underwater Visible Light Communication Channel

JOIV: International Journal on Informatics Visualization, 2022
Underwater Visible light communication (UVLC) is a network communication wirelessly where information is transmitted employing light through visible waves; in this case, the light source comes from a light-emitting diode (LED) as a transmitter underwater.
Luthfi Nur'Adli, Arfianto Fahmi, Brian Pamukti   +2 more
doaj   +1 more source

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

Entropy, 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, Yue Wu, Liqiang Jin, Hongwen Yang   +3 more
doaj   +1 more source

Power Allocation Algorithm Minimizing Outage Probability in Cognitive Radio Relay Network [PDF]

Jisuanji gongcheng, 2017
To improve the outage performance of cognitive radio relay network,this paper proposes a power allocation algorithm minimizing outage probability by analyzing the system outage probability and user power allocation conditions.It presents the mathematical
ZHU Chunhua,ZHOU Yuping,CHEN Baoxing,ZHU Quan
doaj   +1 more source

Simulated Annealing for Resource Allocation in Downlink NOMA Systems in 5G Networks

Applied Sciences, 2021
In this work, we investigate resource allocation and user pairing to improve the system’s Throughput for the downlink non-orthogonal multiple access (NOMA)-based 5G networks.
Osama Abuajwa, Mardeni Bin Roslee, Zubaida Binti Yusoff   +2 more
doaj   +1 more source

Unsupervised Learning for C-RAN Power Control and Power Allocation [PDF]

IEEE Communications Letters, 2021
This letter applies a feedforward neural network trained in an unsupervised fashion to the problem of optimizing the transmit powers in centralized radio access networks operating on a cell-free basis. Both uplink and downlink are considered. Various objectives are entertained, some leading to convex formulations and some that do not. In all cases, the
Rasoul Nikbakht, Anders Jonsson, Angel Lozano   +2 more
openaire   +1 more source

Optimization of Power Allocation for a Multibeam Satellite Communication System with Interbeam Interference

Journal of Applied Mathematics, 2014
In multibeam satellite communication systems it is important to improve the utilization efficiency of the power resources, due to the scarcity of satellite power resources.
Heng Wang, Aijun Liu, Xiaofei Pan, Jiong Li   +3 more
doaj   +1 more source

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

Computers, 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, Rashid Saeed, Elsadig Saeid, Elmustafa Sayed Ali, Maha Abdelhaq, Raed Alsaqour, Nawaf Alharbe   +6 more
doaj   +1 more source

Power Allocation Based on SEP Minimization in Two-Hop Decode-and-Forward Relay Networks [PDF]

, 2011
The problem of optimal power allocation among the relays in a two-hop decode-and-forward cooperative relay network with independent Rayleigh fading channels is considered.
Arash Khabbazibasmenj, Senior Member, Sergiy A. Vorobyov, Student Member   +3 more
core   +1 more source

Low-Complexity Power Allocation in NOMA Systems With Imperfect SIC for Maximizing Weighted Sum-Rate

IEEE Access, 2019
In this paper, we investigate the power allocation for maximizing weighted sum rate (WSR) in downlink multiple carriers non-orthogonal multiple access (MC-NOMA) systems with imperfect successive interference cancellation (SIC).
Xiaoming Wang, Ruilu Chen, Youyun Xu, Qingmin Meng   +3 more
doaj   +1 more source