Sensitivity of the System Capacity with Respect to the System Reliability in a DS-CDMA Cellular System

Insoo KOO  Gwangzeen KO  Yeongyoon CHOI  Kiseon KIM  

IEICE TRANSACTIONS on Communications   Vol.E83-B   No.3   pp.742-745
Publication Date: 2000/03/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Mobile Communication
DS-CDMA,  system capacity,  the system reliability and sensitivity,  

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One of the most important capacity parameters in the DS-CDMA cellular systems is the system reliability on which the reverse link capacity is usually limited by a prescribed lower bound. In this letter, the effect of the system reliability as well as imperfection of the power control on the system capacity is quantitatively considered using sensitivity analysis in a multimedia DS-CDMA cellular system. As a result, an analytical close-form formula is presented in terms of the standard deviation of the received SIR and the system reliability. In a numerical example, sensitivity with respect to the system reliability on the system capacity has the value ranging from 5 to 50 between 95% and 99% the range in we are interested.