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GSM Measurement Basics

资料介绍
GSM Measurement BasicsGSM Measurement Basics

GSM900 DCS1800
Q +180 +90 0 -90 -180

I

Agenda

The Basis For GSM Measurements
Maintaining the RF Link Interference Generation

GSM Cells

GSM Measurement Maintain High Principals Don’ t Interfere with
Quality Radio Link Under All Expected Conditions
MeMe Me Me
Me

Other GSM Links or Other Users of the RF Spectrum
Sha re e r a Sh Share Share

Maintaining the Link Just Enough Power
s s o L Path

Talk Time

4Enough Power to Overcome Path Loss 6 Too Much Power Drains Battery

Maintaining the Link ModulationQQuality
I Q

Received
Q

I

I

Transmitted

Interference

Maintaining the Link Receiver Performance
Multipath & Doppler Usable Range Sensitivity

Adjacen Timeslo Blocking & Spurious Adjacent & Co-Channel

Don’ t Interfere With Other Time Users 7
6

Amplitud
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GSM Measurement Basics
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