NDLI: On two cross-layer assisted resource allocation schemes in multiuser multicarrier systems

Content Provider	IEEE Xplore Digital Library
Author	Qing Bai Nossek, J.A.
Copyright Year	2009
Description	Author affiliation: Institute for Circuit Theory and Signal Processing, Technische Universität München, Theresienstr, 90, 80333 Munich, Germany (Qing Bai; Nossek, J.A.)
Abstract	Resource allocation (RA) is a crucial task in the operation of wireless communication systems, which in many cases aims at meeting the users' quality of service (QoS) requirements with the minimum amount of resources. In this work, we consider the QoS-provisioning RA problem at the downlink of a multicarrier system, where the total transmit power consumption is to be minimized. Two RA schemes, one employing Lagrange dual methods and a greedy primal recovery scheme, and the other heuristic with a three-step approach, are proposed under the same cross-layer framework, where power allocation, adaptive modulation and coding as well as retransmission protocols are jointly modeled. Though both suboptimal, the two schemes are advantageous for their low complexity and small amount of online computations required. Their performances are illustrated and compared based on simulation results. The work also provides a quantitative comparison on the two commonly used retransmission protocols, namely automatic repeat request (ARQ) and hybrid automatic repeat request (HARQ).
Starting Page	186
Ending Page	190
File Size	169828
Page Count	5
File Format	PDF
ISBN	9781424435845
DOI	10.1109/ISWCS.2009.5285282
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-07
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless communication Energy consumption Protocols Computational modeling Quality of service Downlink Resource management Automatic repeat request Lagrangian functions Modulation coding
Content Type	Text
Resource Type	Article

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