Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.1/1749
Título: A turbo SDMA receiver for strongly nonlinearly distorted MC-CDMA signals
Autor: Silva, Paulo
Dinis, Rui
Palavras-chave: Multi-carrier code division multiple access (MC-CDMA)
Multiuser detection
Nonlinear effects
Space division multiple access (SDMA)
Turbo equalization
Data: Fev-2008
Editora: IEEE
Citação: P. Silva, R. Dinis, “A Turbo SDMA Receiver for Strongly Nonlinearly Distorted MC-CDMA Signals”, Can. J. Elect. Comput. Eng. (CJECE), vol. 33, nº.1, pp. 39-44, Feb. 2008.
Resumo: 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 review: yes
URI: http://hdl.handle.net/10400.1/1749
ISSN: 0840-8688
Aparece nas colecções:ISE2-Artigos (em revistas ou actas indexadas)

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