Low complexity Wiener filtering in CDMA systems using a class of pseudo-noise spreading codes

Rodrigo Carvajal, Kaushik Mahata, Juan C. Aguero

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

6 Citas (Scopus)

Resumen

Code division multiple access (CDMA) has become a widely adopted technology for wireless communications, particularly in mobile third generation systems (3G) and global positional system (GPS). In CDMA, a particular class of pseudonoise (PN) spreading codes yields a code-set Grammian with only two distinct eigenvalues. For these spreading codes, we propose a computationally efficient method for signal detection using Wiener filtering. Our approach relies on a matrix inversion step, where we gain in computational efficiency by using the ShermanMorrisonWoodbury formula. The resulting approach involves significantly less computational load compared to popular approaches like Conjugate Gradient (CG) method and the (traditional) Cholesky decomposition.

Idioma originalInglés
Número de artículo6235080
Páginas (desde-hasta)1357-1360
Número de páginas4
PublicaciónIEEE Communications Letters
Volumen16
N.º9
DOI
EstadoPublicada - 2012
Publicado de forma externa

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