TY - JOUR
T1 - Downlink capacity of OFDMA-CR based 5G femtocell networks
AU - Ghosh, Joydev
AU - Jayakody, Dushantha Nalin K.
AU - Qaraqe, Marwa
N1 - Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/8
Y1 - 2018/8
N2 - 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 center with less fading), cluster size (i.e., a group of adjacent macrocells which use all of the systems frequency assignments) via simulation results.
AB - 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 center with less fading), cluster size (i.e., a group of adjacent macrocells which use all of the systems frequency assignments) via simulation results.
KW - Cognitive radio (CR) technology
KW - Downlink (DL) capacity
KW - Femtocell
KW - Macrocell
KW - Orthogonal Frequency Division Multiple Access (OFDMA)
UR - http://www.scopus.com/inward/record.url?scp=85047189191&partnerID=8YFLogxK
U2 - 10.1016/j.phycom.2018.04.016
DO - 10.1016/j.phycom.2018.04.016
M3 - Article
AN - SCOPUS:85047189191
SN - 1874-4907
VL - 29
SP - 329
EP - 335
JO - Physical Communication
JF - Physical Communication
ER -