NDLI: Coordinated Scheduling in Downlink Multi-Cell OFDMA Networks

Content Provider	IEEE Xplore Digital Library
Author	Ling Zhang Xiangming Wen Ting Xu Zhaoming Lu Jun Zhao Shenghua He
Copyright Year	2014
Description	Author affiliation: Beijing Key Lab. of Network Syst. Archit. & Convergence, Beijing, China (Ling Zhang; Xiangming Wen; Ting Xu; Zhaoming Lu; Jun Zhao; Shenghua He)
Abstract	In this paper, we propose a coordinated scheduling scheme in downlink multi-cell Orthogonal Frequency Division Multiplexing Access (OFDMA) networks. Firstly, a novel decision tree algorithm is introduced to categorize users according to certain attribute parameters to improve system performance. To suppress inter-cluster interference, a filter is used at the receive. To mitigate intra-cluster interference and enhance system performance, we jointly form precoding matrix (using Block Diagonalization precoding) and distribute power for coordinative users. Considering the fact that there is a constraint on number of coordinative users simultaneously served on one resource slot and there may be a large number of users needing coordinative transmission, it is necessary to allocate proper resource slots to them, seeking a tradeoff between coordinative user sum rate and system total capacity. Thus, a performance-based slot distribution is utilized. What needs to be pointed out is that our power control is a per BS power constraint. Simulation results show that our proposed scheme can significantly improve the performance of multi-cell networks.
Starting Page	1
Ending Page	5
File Size	290056
Page Count	5
File Format	PDF
ISBN	9781479944491
DOI	10.1109/VTCFall.2014.6965922
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-09-14
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Decision trees Interference Wireless communication Downlink Resource management System performance Receiving antennas
Content Type	Text
Resource Type	Article

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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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