NDLI: A novel finger assignment algorithm for RAKE receivers in CDMA systems

Content Provider	IEEE Xplore Digital Library
Author	Abou-Khousa, M. El-Tarhuni, M. Ghrayeb, A.
Copyright Year	2004
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada (Abou-Khousa, M.)
Abstract	In CDMA systems, assignment of the RAKE fingers to the correct multipath components is crucial for the receiver to combat fading and to take advantage of the multipath diversity. This is particularly important since the number of fingers available is normally limited in order to maintain low receiver complexity. In this paper, we introduce a new RAKE receiver finger assignment algorithm (FAA) based on estimates of the signal-to-interference ratio (SIR) per path, as opposed to signal strength in the conventional schemes. We also introduce a simple algorithm to produce these SIR estimates. A performance comparison between the proposed scheme and the already existing schemes is presented. We show that the proposed scheme provides a significant performance improvement relative to that of the conventional schemes. For instance, the proposed scheme provides gains of up to 3.0 dB at bit error rate 10/sup -4/, relative to the conventional scheme.
Starting Page	2516
Ending Page	2520
File Size	574287
Page Count	5
File Format	PDF
ISBN	0780385330
DOI	10.1109/ICC.2004.1312985
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-06-20
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fingers Fading Multipath channels Multiaccess communication RAKE receivers Interference Bit error rate Diversity reception FAA Wireless communication
Content Type	Text
Resource Type	Article

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