On a geometric view of multiuser detection for synchronous DS/CDMA channels

abstract

• We consider a geometric view of multiuser detection and present results on the problem of efficient computation of the optimal decision regions (Voronoi diagram) for synchronous direct-sequence code division multiple access (DS/CDMA). Among other results, it is shown that Verdu's algebraic notion of 'indecomposable error sequences' relates directly to the geometric construction of the Voronoi diagram for multiuser detection. Based on the presented geometric results we introduce two multiuser detectors whose performance compares favorably to some popular existing detectors.

authors

• Georghiades, Costas

published proceedings

• IEEE TRANSACTIONS ON INFORMATION THEORY

author list (cited authors)

• Li, Q. H., & Georghiades, C. N.

citation count

• 8

complete list of authors

• Li, QH||Georghiades, CN

publication date

• November 2000

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

published in

• IEEE TRANSACTIONS ON INFORMATION THEORY  Journal

keywords

• Code Division Multiple Access (cdma)
• Complexity
• Delaunay Triangulation
• Maximum Likelihood
• Multiuser Detection
• Voronoi Regions

Digital Object Identifier (DOI)

• 10.1109/18.887888

start page

• 2723

end page

• 2731

volume

• 46

issue

• 7

URL

• http://dx.doi.org/10.1109/18.887888