Results 61 to 70 of about 14,391 (289)

Partial Equalization for MC–CDMA Systems in Non-Ideally Estimated Correlated Fading

open access: yes, 2010
Multicarrier code-division multiple access (MC–CDMA) can support high data rates in next-generation multiuser wireless communication systems. Partial equalization (PE) is a low-complexity technique for combining the signals of subcarriers to improve the ...
Conti, Andrea   +10 more
core   +1 more source

Outage performance in relay-assisted overlay cognitive radio networks [PDF]

open access: yes, 2015
This paper investigates outage performance under overlay spectrum mode using relay-assisted network model. Without harming the performance of the primary user (PU), secondary user (SU) makes use of a relay (R) for transmission as a supportive system ...
N.S. Ibrahim   +7 more
core   +1 more source

Optimization and Cost Evaluation of an Autonomous Hybrid Renewable Energy System for Electrifying Rural Areas in Nigeria

open access: yesEnergy Science &Engineering, EarlyView.
This research explores the techno‐economic and environmental performance of fully renewable hybrid energy systems for rural electrification in Auchi, Nigeria. HOMER Pro is utilized to model and optimize PV/WT/Battery, PV/Battery, and WT/Battery configurations under identical conditions.
Ibrahim Seidu   +7 more
wiley   +1 more source

Performance analysis for reconfigurable intelligent surface assisted downlink NOMA networks

open access: yesIET Communications, 2022
In this paper, a reconfigurable intelligent surface (RIS) assisted downlink non‐orthogonal multiple access (NOMA) network is considered, where a base station communicates with a pair of users with the assistance of a RIS.
Xianli Gong   +4 more
doaj   +1 more source

Outage Performance of a Unified Non-Orthogonal Multiple Access Framework [PDF]

open access: yes2018 IEEE International Conference on Communications (ICC), 2018
Accecpted by IEEE ICC ...
Xinwei Yue   +4 more
openaire   +2 more sources

A Rapid Post‐Disaster Restoration Method for Networked Microgrids Based on Adaptive Quantum Particle Swarm Optimization

open access: yesEnergy Science &Engineering, EarlyView.
To enhance the power restoration speed of networked microgrids (NMGs) after extreme natural disasters and reduce the power outage of the system, this paper proposes a rapid post‐disaster restoration method for NMGs based co‐optimization of fault repair and load restoration.
Yunfan Zhang   +3 more
wiley   +1 more source

Outage probability of multiuser cognitive MIMO system

open access: yesTongxin xuebao, 2009
To analyze the multi-antenna gain in multiuser cognitive radio system, a multiuser cognitive MIMO framework was presented. The outage performance was considered in the multiple-antenna flat Raleigh fading broadcast downlink channel and the closed-form ...
WU Ying-xiao1, ZHU Qi2
doaj   +2 more sources

Dual Relay Selection for Cooperative NOMA With Distributed Space Time Coding

open access: yesIEEE Access, 2018
We consider a two-user multi-relay cooperative non-orthogonal multiple access (NOMA) network with distributed space-time coding. Two dual-relay selection strategies are proposed for cooperative NOMA, namely, two-stage dual relay selection with fixed ...
Jing Zhao   +4 more
doaj   +1 more source

Analysis for Outage Probability of Two-hop Relay Cooperative Heterogeneous Networks [PDF]

open access: yesJisuanji gongcheng, 2019
Based on the Maximum-Maximum User Pair Association(MM-UPA) criterion,the outage performance of two-hop relay cooperative heterogeneous networks is studied.By means of stochastic geometry and probability statistics,the spatial location of network nodes is
XIE Mangang,JIA Xiangdong,ZHOU Meng,YANG Xiaorong,HAN Conghui
doaj   +1 more source

On the Outage Performance of Selection Amplify-and-Forward Relaying Scheme

open access: yesIEEE Communications Letters, 2014
In this letter, we propose a selection amplify-and-forward (AF) relaying scheme which has the lower outage probability than that of a conventional AF relaying scheme in cooperative relay networks. In real wireless environments, as the channel of source-to-destination (SD) link varies with an increase in time, we can also obtain a diversity gain through
Jeehoon Lee, Minjoong Rim, Kiseon Kim
openaire   +1 more source

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