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Location-Dependent Downlink Capacity Loss Due to Introducing a High Data-Rate User in CDMA Cellular Systems with Multiple Low Data-Rate Users

Dongwoo KIM

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Summary :

Existing code division multiple access (CDMA) cellular systems achieve capacity gains over conventional time division multiple access (TDMA) or frequency division multiple access (FDMA) systems, by assuming a large number of low data-rate and hence low power users uniformly distributed over a cell. In current CDMA proposals for providing higher data-rate packet services, however, burst high data-rate users do not satisfy this assumption and thus the capacity advantage is lost. In this letter, we quantify the capacity loss with focusing on location-dependent aspects of the degradation. This work contributes to a better understanding of the capacity problem encountered when introducing high data-rate packet services with the cellular band where existing low data-rate CDMA systems operate.

Publication
IEICE TRANSACTIONS on Communications Vol.E85-B No.3 pp.678-681
Publication Date
2002/03/01
Publicized
Online ISSN
DOI
Type of Manuscript
LETTER
Category
Terrestrial Radio Communications

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