Forward-link performance of CDMA cellular system

Author

Ismail, Mostafa S. ; Rahman, Tharek A.

Author_Institution

Dept. of Electr. Eng., Univ. Teknologi Malaysia, Kuala Lumpur, Malaysia

Volume

49

Issue

5

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

1692

Lastpage

1696

Abstract

The impact of the propagation path-loss exponent (γ) 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 γ law is developed. The problem of finding proper power-control factors is considered. According to γ, 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 γ from 4.5 to 2.5. For this range in γ, power control can approximately double the capacity compared to the case of no power control

Keywords

cellular radio; channel capacity; code division multiple access; digital radio; losses; multiuser channels; power control; radio links; radiofrequency interference; radiowave propagation; spread spectrum communication; telecommunication control; DS-CDMA cellular system; analytical model; capacity reduction; digital cellular radio communication; direct-sequence code-division multiple-access; forward CDMA interference; forward-link performance; inverse power-of-distance γ law; optimum performance; power-control factors; propagation path-loss exponent; Analytical models; Fading; Helium; Interference; Land mobile radio cellular systems; Multiaccess communication; Performance analysis; Power control; Power system modeling; System performance;

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/25.892574

Filename

892574