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WLC10-2: Analytic Optimization of HARQ Performance in Wireless Packet Data Systems
2006 (English)Conference paper, Published paper (Refereed)
Abstract [en]

We propose an analytical framework that optimizes the performance of various Hybrid Automatic Repeat reQuest (HARQ) schemes in wireless packet data systems. The optimization framework lends itself to maximizing the user throughput without assuming a specific HARQ scheme, a target packet error rate, and a mapping of signal-to-interference-noise ratios (SINR) into modulation and coding scheme (MCS) sets. Thus, a user selects an optimal amount of redundancy bits used for retransmissions, an optimal packet error rate, and an optimal SINR-MCS mapping such that the user throughput would be maximized. We show that there exists an optimal redundancy block size of incremental redundancy (IR) scheme when the number of retransmissions is limited, while as small as possible redundancy size is optimal when the number of retransmissions is unlimited. Our analytical results are verified through extensive simulations of the IEEE 802.16e system.

Place, publisher, year, edition, pages
IEEE Press, 2006. 1-6 p.
Keyword [en]
Analytical models, Automatic repeat request, Data systems, Error analysis, Modulation coding, Performance analysis, Redundancy, Signal mapping, Signal to noise ratio, Throughput
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-86331DOI: 10.1109/GLOCOM.2006.669ISBN: 1-4244-0356-1 (print)OAI: oai:DiVA.org:kth-86331DiVA: diva2:500626
Conference
IEEE Globecom 2006, Nov. 27 2006-Dec. 1 2006, San Francisco, CA
Note
© 2006 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. QC 20120217Available from: 2012-02-17 Created: 2012-02-13 Last updated: 2012-02-17Bibliographically approved

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Cho, Jeong-woo

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