NDLI: WCDMA HSDPA network performance with receive diversity and LMMSE chip equalization

Content Provider	IEEE Xplore Digital Library
Author	Nihtila, T. Kurjenniemi, J. Lampinen, M. Ristaniemi, T.
Copyright Year	2005
Description	Author affiliation: Dept. of Math. Inf. Technol., Jyvaskyla Univ. (Nihtila, T.; Kurjenniemi, J.)
Abstract	More advanced receiver structures than the conventional single antenna Rake can be used to improve the signal-to-noise (SNR) ratios, which is especially beneficial in order to utilize the high bit rates provided by the HSDPA concept in WCDMA network. In WCDMA system, orthogonal Walsh-Hadamard sequences are used as channelization codes. In frequency-selective fading channels the orthogonality of channelization codes disappears and intra-cell multiple access interference (MAI) arises. In order to mitigate the effect of MAI, a chip-level equalization has shown to be a simple and effective solution. The effectiveness of chip equalization, however, degrades at the cell borders where the inter-cell interference dominates rather than MAI. Dual antenna is a straight-forward solution to mitigate that performance drop. In this paper we consider receivers equipped with dual antenna and linear minimum mean squared error (LMMSE) chip-level equalizers and present an analysts of the expected gains over conventional single and dual antenna rake receivers in realistic situations by using a dynamic WCDMA system-level tool
Starting Page	1245
Ending Page	1249
File Size	2250454
Page Count	5
File Format	PDF
ISBN	9783800729098
DOI	10.1109/PIMRC.2005.1651640
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-09-11
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Multiaccess communication Multiple access interference Fading Receiving antennas Multipath channels RAKE receivers Equalizers Multiuser detection Downlink Base stations
Content Type	Text
Resource Type	Article

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