Forward-link performance of CDMA cellular system

The impact of the propagation path-loss exponent (/spl gamma/) on the forward performance of a direct-sequence code-division multiple-access (DS-CDMA) cellular system is investigated. For this purpose, a simple analytical model based on the inverse power-of-distance /spl gamma/ law is developed. The...

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Bibliographic Details
Published in:IEEE transactions on vehicular technology 2000-09, Vol.49 (5), p.1692-1696
Main Authors: Ismail, M.S., Rahman, T.A.
Format: Article
Language:English
Subjects:
Analytical models
Applied sciences
Cellular
Code division multiple access
Exact sciences and technology
Fading
Interference
Inverse
Land mobile radio cellular systems
Law
Mathematical analysis
Mathematical models
Multiaccess communication
Optimization
Organization, operation and development plans
Performance analysis
Power control
Power system modeling
Radiocommunications
System performance
Telecommunications
Telecommunications and information theory
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Summary:The impact of the propagation path-loss exponent (/spl gamma/) on the forward performance of a direct-sequence code-division multiple-access (DS-CDMA) cellular system is investigated. For this purpose, a simple analytical model based on the inverse power-of-distance /spl gamma/ law is developed. The problem of finding proper power-control factors is considered. According to /spl gamma/, the proper power-control factors are estimated for optimum performance. With these factors, results show that the capacity is reduced by a half by changing /spl gamma/ from 4.5 to 2.5. For this range in /spl gamma/, power control can approximately double the capacity compared to the case of no power control.
ISSN:0018-9545
1939-9359
DOI:10.1109/25.892574