A study of performance degradation of small-cell radio systems caused by improper antenna positioning

Author

Hashemi, Homayoun

Author_Institution

Dept. of Electr. Eng., Sharif Univ. of Technol., Tehran, Iran

Volume

39

Issue

3

fYear

1990

fDate

8/1/1990 12:00:00 AM

Firstpage

213

Lastpage

217

Abstract

A report is presented on the results of an extensive computer-simulation study of the cochannel interference caused by imprecise antenna locations. Interference problems are investigated for various percentage tolerances (which determine tolerance circles around ideal locations) and spatial distributions (which determine actual antenna location inside the tolerance circles) using the tenth percentile of the S/I distribution of the mature system as a criterion. One result shows that system performance is highly sensitive to large-percentage tolerances in later stages of cell-splitting. After analyzing the results, a method was developed to predict the performance of a general mature system with any number of cell sites, any cell radius, any set of percentage tolerances, and any set of spatial distributions

Keywords

broadcast antennas; cellular radio; interference (signal); S/I distribution; cell radius; cell sites; cell-splitting; cochannel interference; imprecise antenna locations; improper antenna positioning; percentage tolerances; performance degradation; small-cell radio systems; spatial distributions; tolerance circles; Computer simulation; Degradation; Frequency; Interchannel interference; Land mobile radio; Mobile antennas; Performance analysis; System performance; Telephony; Urban areas;

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/25.131002

Filename

131002