NDLI: Investigation of frequency-domain link adaptation for a 5-MHz OFDMA/HSDPA system

Content Provider	IEEE Xplore Digital Library
Author	Pokhariyal, A. Kolding, T.E. Frederiksen, F. Olives, P. Sorensen, T.B. Mogensen, P.E.
Copyright Year	2005
Description	Author affiliation: Aalborg Univ., Denmark (Pokhariyal, A.)
Abstract	In this paper, we investigate frequency domain link adaptation (FDLA), e.g. utilizing the frequency selectivity of the channel in an OFDMA system. To make the study specific and based on realistic parameters, we re-use the specifications from a recent 3GPP 5-MHz OFDMA study item. The link adaptation and the frequency domain link adaptation are developed in a way compliant with the basic HSDPA specifications. With FDLA we show up to 75% cell throughput gain over the OFDMA reference system at the cost of increased uplink channel quality signaling overhead for frequency selective channels. We find that optimum waterfilling power distribution only provides a marginal gain over a simpler on/off equal power distribution algorithm per sub-carrier pool when signaling imperfections are taken into account.
Starting Page	1463
Ending Page	1467
File Size	280780
Page Count	5
File Format	PDF
ISBN	0780388879
ISSN	15502252
DOI	10.1109/VETECS.2005.1543562
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-05-30
Publisher Place	Sweden
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Multiaccess communication Signal to noise ratio Frequency domain analysis Power distribution Throughput Frequency conversion Bandwidth Downlink Proposals Fading HSDPA OFDMA frequency-domain link adaptation
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Electrical and Electronic Engineering Computer Science Applications

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