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Handling CCI and ICI in OFDMA Femtocell Networks Through Frequency Scheduling

Summary: Handling CCI and ICI in OFDMA Femtocell
Networks Through Frequency Scheduling
Mustafa E. ahin, Ismail Guvenc, Member, IEEE, Moo-Ryong Jeong, Member, IEEE,
and Hüseyin Arslan, Senior Member, IEEE
Abstract -- Femtocells have a strong potential for
increasing the efficiency and coverage of next-generation
broadband wireless networks. In this paper, a co-channel
framework for the coexistence of orthogonal frequency
division multiple access (OFDMA) based macrocell and
femtocell wireless networks is proposed. It is based on
utilizing the resource blocks of macrocell-associated mobile
stations (mMSs) that are far away to a femtocell base station
(fBS), therefore avoiding strong interference that may occur
between a femtocell and close-by mMSs. An avoidance method
that jointly utilizes the spectrum sensing results as well as
scheduling information obtained from the macrocell base
station (mBS) is introduced. Moreover, the impact of inter-
carrier interference (ICI) from the mMSs in the uplink is
discussed and evaluated through simulations.
Index Terms -- Femtocell, OFDMA, co-channel interference,


Source: Arslan, Hüseyin - Department of Electrical Engineering, University of South Florida


Collections: Engineering