Capacity Estimation for Overlaid Multiband CDMA Systems with SIR-Based Power Control

Duk Kyung KIM
Fumiyuki ADACHI

IEICE TRANSACTIONS on Communications   Vol.E83-B    No.7    pp.1454-1464
Publication Date: 2000/07/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Wireless Communication Technology
overlaid multiband CDMA systems,  SIR-based power control,  raised cosine filtered chip pulse,  

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As a flexible way to accommodate a variety of services, a number of spreading bands are now considered in International Mobile Telecommunications-2000 (IMT-2000) systems and more than two (overlaid) bands can be operated simultaneously in CDMA systems. Capacity estimation in CDMA systems is an important issue in performance analysis and call admission control (CAC), which is closely related to power control. This study derives the reverse link capacity of signal-to-interference ratio (SIR)-based power-controlled overlaid multiband CDMA systems in single and multiple cell environments. The weighted-aggregated data rate is introduced as the link capacity, which can reflect different spreading bandwidths and different QoS requirements. Various combinations of 5, 10, and 20 MHz subsystems are compared to one another in view of the maximum weighted-aggregated data rate. The impact of pulse shaping on CAC and the effect of multiple traffic accommodation on link capacity are also investigated.