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Title: A Turbo SDMA Receiver for Strongly Nonlinearly Distorted MC-CDMA Signals,
Authors: Silva, Paulo
Dinis, Rui
Keywords: Multi-carrier code division multiple access (MC-CDMA)
Multi-user detection
Nonlinear effects
Space division multiple access (SDMA)
Turbo equalization
Issue Date: Feb-2008
Publisher: IEEE
Citation: P. Silva, R. Dinis, A Turbo SDMA Receiver for Strongly Nonlinearly Distorted MC-CDMA Signals, IEEE Canadian Journal of Electrical and Computer Engineering, Vol. 33, No. 1, pp. 39 - 44, February, 2008
Abstract: This paper considers the use of space division multiple access (SDMA) techniques for the uplink of multi-carrier code division multiple access (MCCDMA) systems, where the transmitted signals face strong nonlinear distortion effects. The signal transmitted by each mobile terminal (MT) is submitted to a nonlinear operation consisting of a clipping device followed by a frequency-domain filtering operation, so as to reduce the envelope fluctuations and peak-to-mean envelope power ratio (PMEPR) while maintaining the spectral occupation of conventional MC-CDMA signals. At the base station, an iterative receiver employing multiple antennas jointly performs turbo multi-user detection and the estimation and cancellation of nonlinear distortion effects. Performance results show that the proposed receiver structures can achieve good performances that are very close to those obtained with linear transmitters, even for high system load and/or when a very low-PMEPR MC-CDMA transmission is intended for each MT
Peer Reviewed: yes
metadata.dc.identifier.doi: 10.1109/CJECE.2008.4621793
ISSN: 0840-8688
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Appears in Collections:DCT - Artigos/Papers

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