Performance analysis of soft handoff in CDMA cellular networks

The code-division multiple-access (CDMA) scheme has been considered as one possible choice of the future standards for cellular networks because of its various advantages. Since there can be only one carrier frequency being used in CDMA systems, a handoff scheme with diversity, a so-called "sof...

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Bibliographic Details
Published in:IEEE journal on selected areas in communications 1996-12, Vol.14 (9), p.1762-1769
Main Authors: Su, Szu-Lin, Chen, Jen-Yeu, Huang, Jane-Hwa
Format: Article
Language:English
Subjects:
Base stations
Frequency diversity
Hysteresis
Intelligent networks
Interference
Land mobile radio cellular systems
Mobile communication
Multiaccess communication
Performance analysis
Probability
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Summary:The code-division multiple-access (CDMA) scheme has been considered as one possible choice of the future standards for cellular networks because of its various advantages. Since there can be only one carrier frequency being used in CDMA systems, a handoff scheme with diversity, a so-called "soft handoff", was proposed for higher communication quality and capacity. A mathematical model is developed to analyze the soft handoff process. Markov's concept is applied to describe the system's steady state statistical behavior. System performance such as blocking probability, handoff refused probability, and channel efficiency are also determined. It is concluded that the larger the area the soft handoff region is, the better users in the cellular network will feel.
ISSN:0733-8716
1558-0008
DOI:10.1109/49.545699