Radio resource management in multiple-chip-rate DS/CDMA systems supporting multiclass services

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This paper is concerned with radio resource management in multiple-chip-rate (MCR) DS/CDMA systems accommodating multiclass services with different information rates and quality requirements. Considering both power spectral density (PSD) over a radio frequency (RF) and the effect of RF input filtering on the receiver in MCR-DS/CDMA systems, criteria for call admission are presented and system performance is derived, System performance in MCR-DS/CDMA systems is strongly affected by radio resource management. A minimum total-power-increment-based resource management scheme for an efficient resource management scheme is proposed herein. The performance of this scheme is compared with that of a random-based resource management scheme in terms of new call blocking probability, handoff call dropping probability, and normalized throughput. In addition, in order to reduce handoff call dropping rate, reallocating subsystems assigned for communicating calls is proposed. The minimum total-power-increment-based resource management scheme yields better performance than the random-based resource management scheme for multiclass services.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2001-05
Language
English
Article Type
Article
Keywords

CDMA CELLULAR-SYSTEMS; SPREAD-SPECTRUM; SOFT HANDOFF; CAPACITY; PERFORMANCE; ACCESS; NETWORKS; COMMUNICATION; DESIGN

Citation

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, v.50, no.3, pp.723 - 736

ISSN
0018-9545
URI
http://hdl.handle.net/10203/85258
Appears in Collection
EE-Journal Papers(저널논문)
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