NDLI: Semi-distributed clustering method for CoMP with limited backhaul data transfer

Content Provider	IEEE Xplore Digital Library
Author	Jian Zhao Quek, T.Q.S. Zhongding Lei
Copyright Year	2013
Description	Author affiliation: Inst. for Infocomm Res., A*STAR, Singapore, Singapore (Jian Zhao; Quek, T.Q.S.; Zhongding Lei)
Abstract	Coordinated multipoint (CoMP) transmission has been proposed as an important strategy to improve the signal quality for cell-edge users in future mobile cellular standards. However, when the joint transmission technique is applied in the CoMP downlink, the user data transferred from the data center to the base stations (BSs) can lead to a huge backhaul signaling overhead. Subject to quality-of-service (QoS) and per-BS power constraints, minimizing the user data transfer in the backhaul needs to jointly optimize the beamformer design and the BS assignment for each user data. We show that this problem can be cast into a sparsity-maximization problem, which is NP-hard. A semi-distributed algorithm is proposed for that problem to obtain suboptimal solutions. Such an algorithm is based on the uplink-downlink duality in multicellular networks. It utilizes the projected subgradient method and iterative function evaluation. Simulations show that the proposed method can reduce the backhaul user data transfer by 10%-30% compared to full cooperation for moderate number of users and QoS requirement.
Starting Page	3776
Ending Page	3781
File Size	384382
Page Count	6
File Format	PDF
ISBN	9781467359382
ISSN	15253511
e-ISBN	9781467359399
e-ISBN	9781467359375
DOI	10.1109/WCNC.2013.6555176
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-04-07
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Interference Signal to noise ratio Uplink Downlink Data transfer Minimization
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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