scholarly journals Downlink capacity of OFDMA-CR based 5G femtocell networks

2018 ◽  
Vol 29 ◽  
pp. 329-335 ◽  
Author(s):  
Joydev Ghosh ◽  
Dushantha Nalin K. Jayakody ◽  
Marwa Qaraqe
Keyword(s):  
Femtocell Networks ◽  
Downlink Capacity

scholarly journals Downlink Capacity of OFDMA-CR Based 5G Femtocell Networks

2021 ◽  
Author(s):  
Joydev Ghosh
Keyword(s):  
Spectrum Sharing ◽  
Research Work ◽  
Network Models ◽  
Analytical Framework ◽  
Base Station ◽  
Small Cell ◽  
Femtocell Networks ◽  
Femtocell Network ◽  
Downlink Capacity ◽  
Cell Centre

<div>This research work explores small cell densification as a key technique for next generation wireless network (NGWN). Small cell densification comprises space (i.e, dense deployment of femtocells) and spectrum (i.e., utilization of frequency band at large). The usage of femtocells not only improves the spectral efficiency (SE) of the Heterogeneous two-tier networks against conventional approach, but also it alleviates outage probability and enhances the achievable capacity. We yield an analytical framework to establish the density of the femto base station (FBS) to a monotonically increasing or decreasing function of distance or radius, respectively. This ensures the enhanced performance in spectrum sharing Orthogonal Frequency Division Multiple Access (OFDMA) femtocell network models. We also illustrate the influence of active Femto users (i.e., users in femtocells, and they are usually low mobility and located closer to the cell centre with less fading), cluster size (i.e., a group of adjacent macrocells which use all of the systems frequency assignments) via simulation results.</div>

scholarly journals Downlink Capacity of OFDMA-CR Based 5G Femtocell Networks

2021 ◽  
Author(s):  
Joydev Ghosh
Keyword(s):  
Spectrum Sharing ◽  
Research Work ◽  
Network Models ◽  
Analytical Framework ◽  
Base Station ◽  
Small Cell ◽  
Femtocell Networks ◽  
Femtocell Network ◽  
Downlink Capacity ◽  
Cell Centre

<div>This research work explores small cell densification as a key technique for next generation wireless network (NGWN). Small cell densification comprises space (i.e, dense deployment of femtocells) and spectrum (i.e., utilization of frequency band at large). The usage of femtocells not only improves the spectral efficiency (SE) of the Heterogeneous two-tier networks against conventional approach, but also it alleviates outage probability and enhances the achievable capacity. We yield an analytical framework to establish the density of the femto base station (FBS) to a monotonically increasing or decreasing function of distance or radius, respectively. This ensures the enhanced performance in spectrum sharing Orthogonal Frequency Division Multiple Access (OFDMA) femtocell network models. We also illustrate the influence of active Femto users (i.e., users in femtocells, and they are usually low mobility and located closer to the cell centre with less fading), cluster size (i.e., a group of adjacent macrocells which use all of the systems frequency assignments) via simulation results.</div>

Femtocell Selection Scheme for Reducing Unnecessary Handover and Enhancing Downlink QoS in Cognitive Femtocell Networks

2017 ◽  
Author(s):  
Hoang Nhu Dong ◽  
Hoang Nam Nguyen ◽  
Hoang Trong Minh ◽  
Takahiko Saba
Keyword(s):  
Cellular Networks ◽  
Estimation Methods ◽  
Mobility Prediction ◽  
Capacity Estimation ◽  
Femtocell Networks ◽  
Selection Scheme ◽  
Indoor Communications ◽  
Performance Results ◽  
Cognitive Femtocell

Femtocell networks have been proposed for indoor communications as the extension of cellular networks for enhancing coverage performance. Because femtocells have small coverage radius, typically from 15 to 30 meters, a femtocell user (FU) walking at low speed can still make several femtocell-to-femtocell handovers during its connection. When performing a femtocell-to-femtocell handover, femtocell selection used to select the target handover femtocell has to be able not only to reduce unnecessary handovers and but also to support FU’s quality of service (QoS). In the paper, we propose a femtocell selection scheme for femtocell-tofemtocell handover, named Mobility Prediction and Capacity Estimation based scheme (MPCE-based scheme), which has the advantages of the mobility prediction and femtocell’s available capacity estimation methods. Performance results obtained by computer simulation show that the proposed MPCE-based scheme can reduce unnecessary femtocell-tofemtocell handovers, maintain low data delay and improve the throughput of femtocell users. DOI: 10.32913/rd-ict.vol3.no14.536

An Optimized Handover Algorithm for LTE-A Femtocell Networks

2019 ◽  
Vol 51 (01) ◽  
pp. 81-86
Author(s):  
A. HUSSAIN ◽  
M. ASHRAF ◽  
S. JAN ◽  
Z. MUFTI
Keyword(s):  
Femtocell Networks ◽  
Handover Algorithm
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