NDLI: Optimized BS assignment and resource allocation in cooperative OFDM networks

Content Provider	Springer Nature Link
Author	Gong, Ming Lin, Bin Ho, Pin Han Yu, Hsiang Fu Hung, Patrick
Copyright Year	2013
Abstract	Cooperative transmission (CT) and orthogonal frequency division multiple (OFDM) are promising technologies for extending coverage and increasing throughput in broadband wireless access (BWA) networks. Therefore, we propose a novel BWA network architecture, that can set up inter-cell collaboration using physical layer cooperative transmissions among distributed wired access networks with a powerful coordination capability at the central office. However, conventional base station (BS) assignment and resource allocation schemes cannot be used directly because a user can be serviced by more than one BS with cooperative transmission technology. This study proposes a novel framework of BS assignment and resource allocation in a cooperative OFDM network. We provide three approaches of resource allocation for minimizing bandwidth usage, minimizing transmission power consumption, and balancing resource costs respectively. An optimized resource allocation scheme can be implemented by flexibly choosing one of these approaches based on network load. The simulation results show the efficiency of the proposed mathematical formulations and linearization approach of our scheme. The performance benefit of CT technology on the bandwidth saving is demonstrated by comparing the new BS assignment and resource allocation scheme with conventional non-cooperative transmission.
Starting Page	847
Ending Page	860
Page Count	14
File Format	PDF
ISSN	10220038
Journal	Wireless Networks
Volume Number	20
Issue Number	5
e-ISSN	15728196
Language	English
Publisher	Springer US
Publisher Date	2013-10-16
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	OFDM Adaptive control Resource allocation Cooperative transmission Communications Engineering, Networks Computer Communication Networks Electrical Engineering Business Information Systems
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Information Systems Electrical and Electronic Engineering

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