RECOMMENDATIONS AND REQUIREMENTS OF THE JOINT USING CDMA AND GSM CELLULAR STANDARDS

Authors

M. Zh. Zhumabaev
Dzhylyshbaev M.N. State Communications Agency under the Government of the Kyrgyz Republic, Kyrgyzstan

Keywords:

CDMA, GSM, standard base station, MHz, standards base station, BTS

Abstract

In conclusion, it should be said that the interference from CDMA networks to GSM networks can be reduced in level with the application of practical restrictions:
- installation of additional filters for the base station of the CDMA standard so that the level of emissions of the base station of the CDMA standard at the input of the base station of the GSM standard was - 66 dBm / 200 kHz;
- installation of filters at the input of a GSM base station receiver (with an attenuation of ~ 54 dB) with a minimum guard band of 1.32 MHz.

References

Interference Analysis and Guidelines for Coexistence (Qualcomm).

Digital cellular telecommunications system (Phase 2); Radio transmission and reception, GSM 05.05 version 4.23.1. (European Telecommunications Standards Institute).