Reduction of the near-far effect in mobile communication systems with Code-Division Multiple-Access

Magdalena Purchla

doi:10.1117/12.674962

26 April 2006 Reduction of the near-far effect in mobile communication systems with Code-Division Multiple-Access

Magdalena Purchla

Proceedings Volume 6159, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments IV; 61594B (2006) https://doi.org/10.1117/12.674962
Event: Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments IV, 2005, Wilga, Poland

Abstract

In this paper the basic methods for reducing Multiple Access Interference (MAI) and combating the near-far effect in Direct-Sequence Code-Division Multiple-Access (DS-CDMA) mobile communication systems are presented. MAI and the near-far effect are inevitable in DS-CDMA systems with quasi-orthogonal spreading sequences. An effective method of reducing MAI can increase the capacity of the system that is why so many researchers are working in this field. In this article three most important techniques of decreasing MAI are presented: power control, multiuser detection and space-time processing. There is a short introduction to each topic and one or more examples found in literature of algorithms suitable for practical applications (although not all algorithms are yet used in existing systems).

Citation Download Citation

Magdalena Purchla "Reduction of the near-far effect in mobile communication systems with Code-Division Multiple-Access", Proc. SPIE 6159, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments IV, 61594B (26 April 2006); https://doi.org/10.1117/12.674962

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