Power and Spreading Gain Allocation in CDMA Networks for Prioritized Data Services under Power Constraints

Bo-Hwan JUNG  Sun-Mog HONG  Kwang-Seop JUNG  

Publication
IEICE TRANSACTIONS on Communications   Vol.E89-B    No.6    pp.1807-1814
Publication Date: 2006/06/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.6.1807
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Wireless Communication Technologies
Keyword: 
resource allocation,  CDMA networks,  prioritized services,  power constraints,  

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Summary: 
A power and spreading gain allocation strategy is considered for effectively providing data services for mobile users with different levels of priorities in a DS-CDMA system supporting real-time and non-real-time services. Specifically, the uplink in the DS-CDMA system is considered subject to a constraint on total power received at the base station caused by non-real-time data services. The constraint is imposed to meet QoS requirements of real-time services. The priority level of a data user is specified by the weighting factor assigned to the data throughput of the user. Our strategy implements a relative prioritization that affords a trade-off between spectral efficiency and strict prioritization.