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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Pavelka, P. Krajnak, J. Galajda, P. Kocur, D. |
| Copyright Year | 2007 |
| Description | Author affiliation: Tech. Univ. of Kosice, Kosice (Pavelka, P.; Krajnak, J.; Galajda, P.) |
| Abstract | Multi-carrier code division multiple access (MC-CDMA) is a powerful modulation technique that is being considered in many emerging broadband communication systems. MC-CDMA systems based on OFDM are high sensitive to nonlinear amplification what results in inefficient use of power amplifiers. In a microstatistic MUD (MSF-MUD) has been proposed for performance improvement of MC-CDMA degraded by nonlinear amplifiers. In this paper, a new efficient design procedure of MSF-MUD for nonlinearly distorted symbols of MC-CDMA based on M-symbol QAM modulation is proposed. This method is based on the analysis and change tracking of the M-symbol QAM signal constellations of non-distorted and nonlinearly distorted MC-CDMA symbols by using a training sequence. The results obtained in this paper confirm, that the MSF-MUD clearly overcomes a linear MUD at the outlined scenario whereas MSF-MUD designed by the new method described in this paper is able to provide almost the same performance than that of optimum MSF-MUD. |
| Starting Page | 1 |
| Ending Page | 6 |
| File Size | 3330597 |
| Page Count | 6 |
| File Format | |
| ISBN | 1424408210 |
| DOI | 10.1109/RADIOELEK.2007.371475 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2007-04-24 |
| Publisher Place | Czech Republic |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Multiuser detection High power amplifiers MC-CDMA Quadrature amplitude modulation Microstatistic Broadband communication Multi-user Detector Multicarrier code division multiple access Broadband amplifiers Nonlinear distortion Filter Threshold Decomposition Detectors OFDM modulation Nonlinear Distortion Modulation coding |
| Content Type | Text |
| Resource Type | Article |
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