Introduction_to_GSM_Device_Testing

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Introduction to GSM Device Testing
Test Specifications for Mobile Stations and RFICs
Table of Contents
1. Overview of GSM and EDGE.......................................................................................................... 3
GSM Network Architecture............................................................................................................................... 5
Bands and Frequency Allocation....................................................................................................................... 5
Modulation Schemes ......................................................................................................................................... 7
EDGE and Evolved EDGE................................................................................................................................ 9
Multiple Access Technology ........................................................................................................................... 10
Burst and Signal Structure............................................................................................................................... 11
Channel Structure ............................................................................................................................................ 12
2. GSM/EDGE Transmitter Measurements..................................................................................... 15
Transmitter Test Setup Configuration ............................................................................................................. 15
Power Measurements........................................................................................................................................ 16
Transmit Power (TXP) .................................................................................................................................... 16
Power versus Time (PvT)................................................................................................................................ 18
Spectrum Measurements .................................................................................................................................. 20
Output RF Spectrum (ORFS) .......................................................................................................................... 20
Spurious Emissions.......................................................................................................................................... 23
Modulation Accuracy........................................................................................................................................ 24
Frequency Error............................................................................................................................................... 24
Phase and Frequency Error (PFER)................................................................................................................. 24
Error Vector Magnitude (EVM) ...................................................................................................................... 27
3. GSM/EDGE Receiver Characteristics.......................................................................................... 30
Receiver Test Setup Configuration.................................................................................................................. 30
Receiver Sensitivity Metrics ............................................................................................................................. 32
Nominal Error Rate ......................................................................................................................................... 32
Static Reference Sensitivity Level................................................................................................................... 32
Blocking Characteristics................................................................................................................................... 33
AM Suppression Characteristics ..................................................................................................................... 36
Intermodulation Characteristics...................................................................................................................... 36
Spurious Emissions ........................................................................................................................................... 38
4. References........................................................................................................................................ 40