Results 11 to 20 of about 14,424 (285)

Downlink outage performance of heterogeneous cellular networks [PDF]

open access: yes2016 IEEE International Symposium on Information Theory (ISIT), 2016
This paper derives tight performance upper and lower bounds on the downlink outage efficiency of K-tier heterogeneous cellular networks (HCNs) for general signal propagation models with Poisson distributed base stations in each tier. In particular, the proposed approach to analyze the outage metrics in a K-tier HCN allows for the use of general bounded
Serkan Ak   +2 more
openaire   +4 more sources

Research on Outage Performance Optimization of Cognitive Relay Network with Cooperative Sensing [PDF]

open access: yesJournal of Computing and Information Technology, 2016
In this work, cooperative spectrum sensing technology is applied to optimize the outage probability of cognitive relay networks. The outage performance optimization problem of cognitive relay networks is resolved by designing the sensing time and fusion ...
Yaolian Song   +3 more
doaj   +3 more sources

Outage performance analysis of multicarrier relay selection for cooperative networks [PDF]

open access: yes2017 IEEE Symposium on Computers and Communications (ISCC), 2017
In this paper, we analyze the outage performance of two multicarrier relay selection schemes, i.e. bulk and per-subcarrier selections, for two-hop orthogonal frequency-division multiplexing (OFDM) systems. To provide a comprehensive analysis, three forwarding protocols: decode-and-forward (DF), fixed-gain (FG) amplify-and-forward (AF) and variable-gain
Dang, S, Coon, J, Chen, G, Simmons, D
openaire   +5 more sources

Outage Performance in Secure Cooperative NOMA [PDF]

open access: yes2019 Iran Workshop on Communication and Information Theory (IWCIT), 2019
Enabling cooperation in a NOMA system is a promising approach to improve its performance. In this paper, we study the cooperation in a secure NOMA system, where the legitimate users are distributed uniformly in the network and the eavesdroppers are distributed according to a homogeneous Poisson point process.
Milad Abolpour   +2 more
openaire   +2 more sources

Outage Performance Analysis of RSMA-Aided Semi-Grant-Free Transmission Systems

open access: yesIEEE Open Journal of the Communications Society, 2023
In this paper, we analyze the outage performance of a rate-splitting multiple access (RSMA)-aided semi-grant-free (SGF) transmission system, in which a grant-based user (GBU) and multiple grant-free users (GFUs) access the base station by sharing the ...
Fengcheng Xiao   +4 more
doaj   +1 more source

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

open access: yesJisuanji 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

Physical layer security of reconfigurable intelligent surface empowered wireless network with cooperative jammer [PDF]

open access: yes, 2022
This paper evaluates the physical layer security performance of a reconfigurable intelligent surface (RIS) enabled wireless network in the presence of a passive eavesdropper.
Olakanmi Oladayo Olufemi   +5 more
core   +2 more sources

Exploiting Full-duplex and Fixed Power Allocation Approaches for Dual-hop Transmission in Downlink NOMA

open access: yesAdvances in Electrical and Electronic Engineering, 2021
In a wireless system, dual-hop transmission requires Full-Duplex (FD) to transmit signals from the base station too far users. It is more beneficial if we deploy non-orthogonal multiple access to serve specific users, i.e.
Tu-Trinh Thi Nguyen, Dinh-Thuan Do
doaj   +1 more source

On the Performance of Full-Duplex Cooperative NOMA With Non-Linear EH

open access: yesIEEE Access, 2021
This paper studies a non-linear energy harvesting (EH) enabled full-duplex (FD) cooperative non-orthogonal multiple access (C-NOMA) system, where the near user acts as an FD relay to assist the transmission from BS to far user with power-splitting (PS ...
Long Ma, Enyu Li, Qianqian Yang
doaj   +1 more source

On Converged Secrecy Outage Performance for RIS-Aided Communications

open access: yes2023 IEEE 98th Vehicular Technology Conference (VTC2023-Fall), 2023
Secrecy performance is one of the most crucial and interesting aspects of physical layer security (PLS) that has been analyzed in the past decades. Reconfigurable intelligent surface (RIS) is a cost-effective component to enhance the secrecy performance of wireless communication systems.
Junming Li   +3 more
openaire   +3 more sources

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