Annex 1 - Measurement of protection ratios for J3E emission
1 Introduction
2 Measurement
2.1
Measurement principle
2.2
Interfering signals
2.3
Measurement method
2.3.1
Test speech samples and sending order
2.3.2
Mean opinion score (MOS)
2.3.3
Listening conditions
2.3.4
Setting of S/N ratio and S/I
ratio
2.3.5
Determination of sending order of
speech samples
3 Measurement results
3.1
MOS versus S/N ratio
3.2
MOS versus S/I ratio
4 Considerations
4.1
MOS
4.2
Protection ratios
Annex 2 - Conversion factors
for deriving the protection ratios
1 Introduction
2 Calculation of protection ratios
2.1
Calculation method
2.2
J3E emission
2.3 R3E, H3E and A3E emissions
2.4
B8E emission
3 Assumptions for conversion factors
3.1
J3E emission
3.2
R3E emission
3.3
H3E emission
3.4
A3E emission
3.5
B8E emission
3.6
Mean power of speech signal
Annex 3 - Measurement of
protection ratios and minimum necessary frequency separation for class of
emission J7B
1 Introduction
2 Experiment
2.1
Measurement of protection ratios
2.2 Determination of minimum frequency separation
2.3
Measurements of multiplex mode 2AT
3 Conclusions