Interference analysis in the GSM-system

Author

Schiml, A.

Author_Institution

DeTeMobil, Bonn, Germany

fYear

1994

fDate

8-10 Jun 1994

Firstpage

686

Abstract

In the planning phase of a cellular radio network information on the expected radio interference between cells is needed many times. A new approach to the prediction of radio interference in GSM is introduced. Instead of concerning the carrier to interferer ratio C/I, often used in planning analog systems, an adequate algorithm for planning digital systems is presented. Including the fading statistics of the mobile radio channel, the algorithm calculates the probability that a digital quality threshold in terms of bit error rate (BER) is exceeded. The benefits of discontinuous transmission (DTX) in GSM to interference reduction is studied. Furthermore the impact of a partly traffic loaded interferer cell on interference is analysed. As a result of the analysis the use of DTX and a traffic load factor of e.g. 75% can reduce interference down to 63%

Keywords

cellular radio; cochannel interference; digital radio; error statistics; fading; interference suppression; land mobile radio; radiofrequency interference; telecommunication traffic; time-varying channels; DTX; GSM-system; algorithm; bit error rate; cellular radio network information; digital quality threshold; discontinuous transmission; fading statistics; interference reduction; mobile radio channel; planning; radio interference; traffic loaded interferer cell; Bit error rate; Digital systems; Electromagnetic interference; Error analysis; Fading; GSM; Land mobile radio; Land mobile radio cellular systems; Probability; Telecommunication traffic;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1994 IEEE 44th

Conference_Location

Stockholm

ISSN

1090-3038

Print_ISBN

0-7803-1927-3

Type

conf

DOI

10.1109/VETEC.1994.345040

Filename

345040