Interference-based channel assignment for DS-CDMA cellular systems

Link capacity is defined as the number of channels available in a link, In direct-sequence code-division multiple-access (DS-CDMA) cellular systems, this is limited by the interference present in the link. The interference is affected by many environmental factors, and, thus, the link capacity of the systems varies with the environment. Due to the varying link capacity, static channel assignment (SCA) based on fixed link capacity is not fully using the link capacity. This paper proposes a more efficient channel assignment based on the interference received at the base station (BS), In the proposed algorithm, a channel is assigned if the corresponding interference margin is less than the allowed interference, and, thus, channels are assigned adaptively to dynamically varying link capacity, Using the proposed algorithm yields more channels than using SCA in such an environment changes with nonhomogeneous traffic load or varying radio path loss, The algorithm also improves service grade by reserving channels for handoff calls.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
1999-01
Language
ENG
Keywords

CAPACITY

Citation

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, v.48, no.1, pp.233 - 239

ISSN
0018-9545
URI
http://hdl.handle.net/10203/9005
Appears in Collection
EE-Journal Papers(저널논문)
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