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Analysis of Erlang Capacity for the Multimedia DS-CDMA Systems with the Limited Number of Channel Elements

Insoo KOO, JeongRok YANG, Kiseon KIM

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Summary :

In practice, the DS-CDMA system is equipped with a finite number of Channel Element (CE)s that performs the baseband spread signal processing for a given channel in the base station. In this situation, the call blocking can be caused not only by the insufficient number of channel elements but also by the limit of available traffic channels. In this paper, we focus on analyzing the effect of the limited number of CEs on the Erlang capacity of multimedia DS-CDMA systems in the reverse link when the CDMA cells are sectorized with 3 sectors. For the performance analysis, a multi-dimensional Markov chain model is developed. As a result, the more CE results in the larger Erlang capacity. However, the Erlang capacity is saturated after a certain value of CEs where the call blocking is mainly caused by the insufficient channels per sector.

Publication
IEICE TRANSACTIONS on Communications Vol.E83-B No.12 pp.2717-2722
Publication Date
2000/12/25
Publicized
Online ISSN
DOI
Type of Manuscript
LETTER
Category
Terrestrial Radio Communications

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