NDLI: A Beamforming Codebook Restriction for Cross-Tier Interference Coordination in Two-Tier Femtocell Networks

Content Provider	IEEE Xplore Digital Library
Author	Sungsoo Park Woohyun Seo Sooyong Choi Daesik Hong
Copyright Year	1967
Abstract	This paper examines a novel multichannel multi-antenna-based cross-tier interference coordination strategy for two-tier femtocell networks. To reduce the cross-tier interference and improve the aggregate throughput of two-tier femtocell networks without exchanging feedback information by backhauling, we propose a beamforming codebook restriction strategy. The beamforming codebook restriction strategy enables the femtocell users to select the best channel that is robust to cross-tier interference before the transmission by reducing the size of the macrocell beamforming codebook. Although restricting the beamforming codebook increases the quantization error for macrocell users, the opportunistic channel selection strategy and the proportional fair scheduler compensate for the increased quantization error by exploiting the channel selection diversity gain and the multiuser diversity gain. Both analytical and numerical results demonstrate that the proposed strategies collaboratively improve the aggregate throughput of two-tier femtocell networks.
Sponsorship	IEEE Vehicular Technology Society
Starting Page	1651
Ending Page	1663
Page Count	13
File Size	1786626
File Format	PDF
ISSN	00189545
Volume Number	60
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-05-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Macrocell networks Interference Array signal processing Femtocell networks Throughput Signal to noise ratio Ultrafast electronics interference coordination Backhaul beamforming codebook restriction femtocell
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Automotive Engineering Computer Networks and Communications Electrical and Electronic Engineering Aerospace Engineering

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