saaroo
2016-09-10, 03:08 PM
Introduction to LTE Device Testing
From Theory To Transmitter and Receiver Measurements
Table of Contents
1. LTE and LTE Advanced....................................................................................................... 5
LTE Signal Structure.............................................................................................................................. 5
OFDM.................................................................................................................................................... 6
MIMO .................................................................................................................................................... 8
Carrier Aggregation ............................................................................................................................. 11
Theoretical Data Rates......................................................................................................................... 11
LTE Frame Structure ........................................................................................................................... 12
FDD Frame Structure........................................................................................................................... 13
TDD Frame Structure .......................................................................................................................... 14
LTE Downlink Channel Structure ...................................................................................................... 15
LTE Uplink Channel Structure ........................................................................................................... 18
SC-FDMA in Uplink Transmission..................................................................................................... 19
Physical and Logical Channels............................................................................................................. 20
Physical Channels of LTE ................................................................................................................... 21
2. LTE Transmitter Measurements ....................................................................................... 24
Test Setup Configuration ..................................................................................................................... 24
Power Measurements ............................................................................................................................ 25
UE Maximum Output Power ............................................................................................................... 27
Maximum Power Reduction ................................................................................................................ 30
Output Power Dynamics...................................................................................................................... 34
Spectrum Measurements ...................................................................................................................... 42
Occupied Bandwidth............................................................................................................................ 42
Out-of-band Emissions ........................................................................................................................ 44
Spurious Emissions.............................................................................................................................. 48
Transmit Intermodulation .................................................................................................................... 49
Transmit Signal Quality Measurements ............................................................................................. 51
Frequency Error ................................................................................................................................... 51
Error Vector Magnitude....................................................................................................................... 52
Carrier Leakage.................................................................................................................................... 55
In-band Emissions................................................................................................................................ 56
Spectral Flatness .................................................................................................................................. 58
Transmitter Measurement Optimizations .......................................................................................... 59
3. LTE Receiver Measurements ............................................................................................. 61
Reference Sensitivity Level................................................................................................................... 61
Maximum Input Level .......................................................................................................................... 63
From Theory To Transmitter and Receiver Measurements
Table of Contents
1. LTE and LTE Advanced....................................................................................................... 5
LTE Signal Structure.............................................................................................................................. 5
OFDM.................................................................................................................................................... 6
MIMO .................................................................................................................................................... 8
Carrier Aggregation ............................................................................................................................. 11
Theoretical Data Rates......................................................................................................................... 11
LTE Frame Structure ........................................................................................................................... 12
FDD Frame Structure........................................................................................................................... 13
TDD Frame Structure .......................................................................................................................... 14
LTE Downlink Channel Structure ...................................................................................................... 15
LTE Uplink Channel Structure ........................................................................................................... 18
SC-FDMA in Uplink Transmission..................................................................................................... 19
Physical and Logical Channels............................................................................................................. 20
Physical Channels of LTE ................................................................................................................... 21
2. LTE Transmitter Measurements ....................................................................................... 24
Test Setup Configuration ..................................................................................................................... 24
Power Measurements ............................................................................................................................ 25
UE Maximum Output Power ............................................................................................................... 27
Maximum Power Reduction ................................................................................................................ 30
Output Power Dynamics...................................................................................................................... 34
Spectrum Measurements ...................................................................................................................... 42
Occupied Bandwidth............................................................................................................................ 42
Out-of-band Emissions ........................................................................................................................ 44
Spurious Emissions.............................................................................................................................. 48
Transmit Intermodulation .................................................................................................................... 49
Transmit Signal Quality Measurements ............................................................................................. 51
Frequency Error ................................................................................................................................... 51
Error Vector Magnitude....................................................................................................................... 52
Carrier Leakage.................................................................................................................................... 55
In-band Emissions................................................................................................................................ 56
Spectral Flatness .................................................................................................................................. 58
Transmitter Measurement Optimizations .......................................................................................... 59
3. LTE Receiver Measurements ............................................................................................. 61
Reference Sensitivity Level................................................................................................................... 61
Maximum Input Level .......................................................................................................................... 63