Open AccessFemtocell base station clustering and logistic smooth transition autoregressive‐based predicted signal‐to‐interference‐plus‐noise ratio for performance improvement of two‐tier macro/femtocell networks
Author(s) -
Lotfollahzadeh Tahereh,
Kabiri Sepideh,
Kalbkhani Hashem,
Shayesteh Mahrokh G.
Publication year - 2016
Publication title -
iet signal processing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.384
H-Index - 42
eISSN - 1751-9683
pISSN - 1751-9675
DOI - 10.1049/iet-spr.2014.0265
Subject(s) - femtocell , computer science , signal to interference plus noise ratio , power control , telecommunications link , base station , cluster analysis , interference (communication) , throughput , signal to noise ratio (imaging) , computer network , wireless , transmitter power output , autoregressive model , wireless network , power (physics) , algorithm , channel (broadcasting) , telecommunications , statistics , mathematics , transmitter , physics , artificial intelligence , quantum mechanics
The aim of this study is to improve the performance of two‐tier macro/femtocell networks using a power control approach. In wireless networks, power control plays an important role in improving a number of performance parameters such as co‐channel interference and outage probability reduction, throughput increasing, and power saving. This study explores the evolution of centralised power control algorithm based on femtocell base station (FBS) clustering and predicted signal‐to‐interference‐plus‐noise ratio (SINR) of users. To reduce the computational complexity of centralised algorithm, dense deployed femtocells are considered in different clusters. In this case, femtocells inside one cluster make considerable interference to each other, while the interferences from femtocells of other clusters are negligible. Moreover, because of the non‐linearity of SINR samples, non‐linear logistic smooth transition autoregressive (LSTAR) model is used to model the SINR data, and then the next SINR samples are predicted from the previous samples. According to the clustered FBSs and predicted SINR, the proposed power control scheme is applied to femtocell network in the downlink. The results demonstrate that the introduced method improves the outage probability and throughput and outperforms previous methods significantly.