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Performance of Coded Uplink MC-CDMA with Combined Pre- and Post-Equalization in Fading Channels

Cosovic, I. and Kaiser, St. and Schnell, M. and Springer, A. (2004) Performance of Coded Uplink MC-CDMA with Combined Pre- and Post-Equalization in Fading Channels. In: Proceedings IST'04. IST Mobile & Wireless Communications Summit 2004 (IST'04), Lyon, France, June 27-30, 2004, Lyon, France.

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Abstract

In this paper, the novel concept of combined equalization is investigated for coded uplink MC-CDMA. For combined-equalization it is presumed that channel state information (CSI) is available at the transmitter (Tx) as well as at the receiver (Rx). As a result, combined-equalization achieves considerable performance improvements over preor post-equalization applied alone if the corresponding preand post-equalization techniques within combined-equalization are chosen in a preferred way. For combined-equalization the design criterion at Tx is optimal power assignment with respect to CSI rather than avoidance of multiple-access interference (MAI), whereas MAI cancellation followed by maximum ratio combining (MRC) of the almost interference free signal is the main task at Rx. Thus, combined-equalization offers two degrees of freedom - at Tx and Rx - in order to resolve the two contrary design goals of optimal power allocation with respect to the fading channel and MAI supression/avoidance. As a result, improved single-user bounds for MC-CDMA systems transmitting over fading channels are achieved in the case of combined-equalization. Simulation results show that these improved single-user bounds can be approached very closely even for fully-loaded systems if the combined pre- and postequalization techniques are chosen accordingly.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2004,
Title:Performance of Coded Uplink MC-CDMA with Combined Pre- and Post-Equalization in Fading Channels
Authors:
AuthorsInstitution or Email of Authors
Cosovic, I.UNSPECIFIED
Kaiser, St.UNSPECIFIED
Schnell, M.UNSPECIFIED
Springer, A.Universität Linz
Date:2004
Journal or Publication Title:Proceedings IST'04
Refereed publication:Yes
In ISI Web of Science:No
Status:Published
Keywords:MC-CDMA, Performance, Coded Uplink, Fading Channel
Event Title:IST Mobile & Wireless Communications Summit 2004 (IST'04), Lyon, France, June 27-30, 2004
Event Location:Lyon, France
Event Type:international Conference
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W KN - Kommunikation/Navigation
DLR - Research area:Space
DLR - Program:W KN - Kommunikation/Navigation
DLR - Research theme (Project):W - Vorhaben GNSS2/Neue Dienste und Produkte (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation
Deposited By: elib DLR-Beauftragter
Deposited On:16 Sep 2005
Last Modified:06 Jan 2010 21:31

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