Summary
IEICE Information and Communication Technology Forum
2015
Session Number:SESSION7
Session:
Number:SESSION7-6
LTE Femtocell Channel Assignment using Frequency Time Hopping
Louai Alkhateb, Mohamad Yusoff Alias,
pp.-
Publication Date:2015-08-31
Online ISSN:2188-5079
DOI:10.34385/proc.22.SESSION7-6
Summary:
Femtocell deployment concept over a microcell has attracted tremendous attention in both industrial and academic environments. Femtocells face several challenges, one of these challenges is the interference mitigation between neighbouring femtocells themselves and between a femtocell and a macrocell. This is because both the femtocell and the macrocell share the same licensed frequency spectrum. Additionally, based on users' service requirements, the conventional radio source management techniques for hierarchical cellular systems does not suit that of femtocell networks due to the position of femtocells being random. This paper proposes a new co-channel interference (CCI) avoidance scheme using frequency time hopping technique for the downlink of Orthogonal Frequency-Division Multiple Access (OFDMA) based systems (e.g. Long Term Evolution (LTE) system). The proposed scheme eliminates the interference between femtocells. In addition, it maximizes the number of femtocells with limited number of subcarrier.