Reverse-link capacity of multiband overlaid DS-CDMA systems

Authors:
Lei Zhuge;Victor O. K. Li
Affiliations:
The University of Hong Kong, Hong Kong, China and University of Southern California, Los Angeles;The University of Hong Kong, Hong Kong, China
Venue:
Mobile Networks and Applications - Analysis and Design of Multi-Service Wireless Networks
Year:
2002

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Abstract

In the future deployment of wideband DS-CDMA mobile communication systems, spectrum overlay among sub-bands with different bandwidths is probably inevitable. In this paper we present an approach to estimate the reverse-link capacity of overlaid multiband DS-CDMA systems in terms of the maximum number of users in each sub-band. We will derive the general capacity formula, and present a decomposition method for the capacity analysis to reduce the computational complexity. Based on this decomposition method the conditions for maximum bandwidth utilization are obtained. These results are then extended to account for realistic constraints such as the maximum received power and imperfect power control.