A tree partitioning dynamic policy for OVSF codes assignment in wideband CDMA

Authors:
M. Dell'Amico;F. Maffioli;M. L. Merani
Affiliations:
DISMI, Univ. of Modena & Reggio Emilia, Italy;-;-
Venue:
IEEE Transactions on Wireless Communications
Year:
2004

Citing 0
Cited 3

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Class-based fair code allocation with delay guarantees for OVSF-CDMA and VSF-OFCDM in next-generation cellular networks

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Code reservation schemes at the forward link in WCDMA

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Abstract

This paper proposes some novel techniques to accommodate users with different rate requirements in a wideband code-division multiple-access system employing orthogonal variable spreading factor codes. Two simple static code assignment strategies are first considered, and an improvement based on multicode assignment. Then the new idea of tree partitioning is introduced and used to devise a dynamic code reassignment algorithm. The behavior of these different techniques is experimentally investigated, in terms of call blocking probability and number of required reassignments. The tree partitioning method exhibits very good performances.