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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 +2 more
doaj +1 more source
Subcarrier and Power Allocation for LDS-OFDM System [PDF]
, 2011 Low Density Signature-Orthogonal Frequency Division Multiplexing (LDS-OFDM) has been introduced recently as an efficient multiple access technique. In this paper, we focus on the subcarrier and power allocation scheme for uplink LDS-OFDM system.
AL-Imari, Mohammed +3 more
core +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 +3 more
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 +2 more
doaj +1 more source
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 +2 more
core +2 more sources
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 +3 more
doaj +1 more source
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 +6 more
doaj +1 more source
High Speed Railway Wireless Communications: Efficiency v.s. Fairness
, 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
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 +3 more
doaj +1 more source
Optimal Power Allocation over Multiple Identical Gilbert-Elliott Channels
, 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