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A downlink beamforming assisted by locally positioned communication devices

Authors
You, CheolwooJung, Young-HoCho, Sunghyun
Issue Date
Dec-2014
Publisher
WILEY-BLACKWELL
Keywords
cross-tier interference; HCS system; downlink beamforming; power control; cell coverage
Citation
INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS, v.27, no.12, pp.3971 - 3979
Indexed
SCIE
SCOPUS
Journal Title
INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS
Volume
27
Number
12
Start Page
3971
End Page
3979
URI
https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/21100
DOI
10.1002/dac.2592
ISSN
1074-5351
Abstract
Recently, multiple cell types with overlapping coverage have been deployed simultaneously to increase cellular network capacity. Cross-tier interference is one of the key technical challenges in the use of this method. A simple and practical beamforming scheme assisted by locally positioned communication devices for the downlink of a multi-cell wireless hierarchical cell structure system is proposed in this paper to maximize the capacity of the embedded small cell and simultaneously ensure minimal impact on the performance of existing macrocells. The locally positioned communication devices can be implemented with low complexity and at low cost and can continuously provide helpful and accurate information to base stations for the proper configuration of geographical cell coverage, allowing neighboring cells to cooperate effectively with each other. Simulation results verify that the proposed scheme can provide a significant gain over conventional systems not using the proposed algorithm. Copyright (c) 2013 John Wiley & Sons, Ltd.
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ERICA 소프트웨어융합대학 (ERICA 컴퓨터학부)
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