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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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)|
|Title:||Performance of Coded Uplink MC-CDMA with Combined Pre- and Post-Equalization in Fading Channels|
|Journal or Publication Title:||Proceedings IST'04|
|In ISI Web of Science:||No|
|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)|
|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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