NDLI: Quality-of-Service Analysis for Linear Multiuser Detectors in the Uplink of a Wireless Network

Content Provider	IEEE Xplore Digital Library
Author	Martinez-Lopez, F.J. Campos-Delgado, D.U. Luna-Rivera, J.M. Arce-Santana, E.
Copyright Year	2007
Description	Author affiliation: CIEP, San Luis Potosf (Martinez-Lopez, F.J.)
Abstract	In any wireless network is important to measure the quality-of-service (QoS) at the mobile units. Based on this information, the network will relocate their resources in order to achieve the performance specifications. Hence this objective motivates this paper, where analytical evaluations of the signal-to-noise plus interference ratio (SNIR) are carried out for each active user in a wireless communication system. In particular, this work studies the performance of linear detectors for direct-sequence code division multiple access (DS-CDMA) systems at different loading levels using singular value decomposition (SVD) techniques in the uplink channel. The QoS in terms of the SNIR are compared for the matched filter (MF), decorrelator, projector and minimum-mean-squared error (MMSE) detectors. In the analytical evaluations, two techniques are proposed to quantify the SNIR according to the multiple-access interference (MAI) and noise representation. The first one is based on an average of the MAI and noise information of all mobile users at the base station. The second approach relies on computing explicitly the interference for each active user. Simulation results show a performance comparison between both approaches, and a Monte-Carlo numerical evaluation in terms of the SNIR and the number of active users.
Starting Page	1945
Ending Page	1950
File Size	2173399
Page Count	6
File Format	PDF
ISBN	9781424407545
DOI	10.1109/ISIE.2007.4374905
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-06-04
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Quality of service Detectors Wireless networks Multiple access interference Multiaccess communication Signal analysis Wireless communication Singular value decomposition Matched filters Decorrelation
Content Type	Text
Resource Type	Article

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