NDLI: Resource allocation for OFDMA systems with multi-cell joint transmission

Content Provider	IEEE Xplore Digital Library
Author	Jingya Li Xin Chen Botella, C. Svensson, T. Eriksson, T.
Copyright Year	2012
Description	Author affiliation: IRTIC, Universitat de València, València, Spain (Botella, C.) \|\| Signals and Systems, Chalmers University of Technology, Gothenburg, Sweden (Jingya Li; Svensson, T.; Eriksson, T.) \|\| WTI lab, Beijing University of Posts and Telecommunications, Beijing, China (Xin Chen)
Abstract	This paper considers the downlink resource allocation of a coordinated multi-cell cluster in OFDMA systems with universal frequency reuse. Multi-cell joint transmission is considered via zero-forcing precoding. Furthermore, joint optimization of the user selection and power allocation across multiple subchannels and multiple cells is studied. The objective is to maximize the weighted sum rate under per-base-station power constraints. Based on general duality theory, two iterative resource allocation algorithms are proposed and compared with the optimal solution, which requires an exhaustive search of all possible combinations of users over all subchannels. Simulation results show that the two proposed algorithms achieve a performance very close to the optimal, with much lower computational complexity. In addition, we show that joint user set selection across multiple subchannels significantly improves the system performance in terms of the weighted sum rate.
Starting Page	179
Ending Page	183
File Size	177954
Page Count	5
File Format	PDF
ISBN	9781467309707
ISSN	19483244
e-ISBN	9781467309714
DOI	10.1109/SPAWC.2012.6292883
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-17
Publisher Place	Turkey
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Resource management Joints Optimization Complexity theory Vectors Clustering algorithms Signal to noise ratio base-station coordination OFDMA scheduling power control multi-cell joint transmission
Content Type	Text
Resource Type	Article

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