Results 11 to 20 of about 3,881,663 (246)

Data Detection and Code Channel Allocation for Frequency-Domain Spread ACO-OFDM Systems Over Indoor Diffuse Wireless Channels [PDF]

open access: yesIEEE Photonics Journal, 2014
Future optical wireless communication systems promise to provide high-speed data transmission in indoor diffuse environments. This paper considers frequency-domain spread asymmetrically clipped optical orthogonal frequency-division multiplexing (ACO-OFDM)
Jun-Bo Wang   +4 more
doaj   +2 more sources

Frequency-Aware Optimal Power Allocation for Battery-Supercapacitor Hybrid Energy Storage System

open access: yesBatteries
Power allocation remains a critical challenge in battery-supercapacitor hybrid energy storage systems (HESS), where effective energy management is essential for improving system performance and extending lithium-ion battery lifespan.
Long Gao   +4 more
doaj   +2 more sources

Investigation of efficient resource allocation schemes for WiMAX networks [PDF]

open access: yes, 2013
This thesis was submitted for the degree of Master of Philosophy and was awarded by Brunel University on 9 July 2008.WiMax (Worldwide Interoperability for Microwave Access) is a promising wireless technology with the aim of providing the last mile ...
Ali, Usman Ahmed
core   +4 more sources

Radio resource allocation in relay based OFDMA cellular networks [PDF]

open access: yes, 2010
PhDAdding relay stations (RS) between the base station (BS) and the mobile stations (MS) in a cellular system can extend network coverage, overcome multi-path fading and increase the capacity of the system.
Xiao, Lin
core   +3 more sources

Joint Tomlinson-Harashima precoding and optimum transmit power allocation for SC-FDMA [PDF]

open access: yes, 2010
Single-Carrier Frequency Division Multiple Access (SC-FDMA) has been selected as the uplink transmission scheme in the 3GPP Long Term Evolution standard.
Nix, AR   +3 more
core   +1 more source

The merit of high-frequency data in portfolio allocation [PDF]

open access: yes, 2011
This paper addresses the open debate about the usefulness of high-frequency (HF) data in large-scale portfolio allocation. Daily covariances are estimated based on HF data of the S&P 500 universe employing a blocked realized kernel estimator.
Hautsch, Nikolaus   +5 more
core   +1 more source

The Role of ITU in the Codification and Development of International Space Law [PDF]

open access: yesFaṣlnāmah-i Pizhūhish-i Huqūq-i ̒Umūmī, 2015
Initially perhaps, the codification and progressive development of internationalspace law exclusively are attributed to the United Nations Committee on thePeaceful Uses of Outer Space (COPUOS).
mansour jabbari, fatemeh hatami
doaj  

Research on C-V2X Wireless Resource Management Algorithm [PDF]

open access: yesJisuanji gongcheng, 2021
Under the Cellular Vehicle-to-everything (C-V2X) underlay mode,Cellular Users (C-UEs) and Vehicular Users (V-UEs) share the uplink spectrum and cause complex co-channel interference.To solve the problem and determine the transmission priority of users ...
LIN Feng, LI Chuanwei, DUAN Jianlan, JIANG Jianchun, FU Shiming
doaj   +1 more source

Multi-user OFDM adaptive resource allocation research based on clustering idea

open access: yesDianzi Jishu Yingyong, 2019
Aiming at the complexity and system capacity of orthogonal frequency division multiplexing adaptive resource allocation, this paper proposes a joint subcarrier allocation and power allocation scheme.
Gao Hao, Li Xuehua, Yao Yuanyuan
doaj   +1 more source

Research on Resource Allocation Algorithm of Visible Light Communication DCO-OFDM System

open access: yesGuangtongxin yanjiu, 2021
In view of the problem of low channel utilization in the Direct Current-biased Optical Orthogonal Frequency Division Multiplexing (DCO-OFDM) system for indoor Visible Light Communication (VLC), the channel and bit resources of the system are optimally ...
Wen-xin HONG, Tian-yu LI, Jian-fei CHEN
doaj   +1 more source

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