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ELECTROMAGNETIC COMPATIBILITY AND RADIO SPECTRUM MATTERS (ERM); UNCERTAINTIES IN THE MEASUREMENT OF MOBILE RADIO EQUIPMENT CHARACTERISTICS PART 2
European Telecommunications Standards Institute
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Availability date: 11/06/2021
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Foreword
Introduction
1 Scope
2 References
3 Definitions, symbols and abbreviations
3.1 Definitions
3.2 Symbols
3.3 Abbreviations
4 Receiver measurement examples
4.1 Conducted
4.1.1 Maximum usable sensitivity
4.1.1.1 Maximum usable sensitivity for analogue
speech
4.1.1.2 Maximum usable sensitivity for a bit
stream
4.1.1.3 Maximum usable sensitivity for messages
4.1.2 Co-channel rejection
4.1.2.1 Co-channel rejection for analogue speech
4.1.2.2 Co-channel rejection for bit stream
4.1.2.3 Co-channel rejection for messages
4.1.3 Adjacent channel selectivity
4.1.3.1 Adjacent channel selectivity for analogue
speech
4.1.3.2 Adjacent channel selectivity for bit
streams
4.1.3.3 Adjacent channel selectivity for messages
4.1.4 Spurious response immunity
4.1.4.1 Spurious response immunity measurements
for analogue speech
4.1.4.2 Spurious response immunity measurements
for bit stream
4.1.4.3 Spurious response immunity measurements
for messages
4.1.5 Intermodulation immunity
4.1.5.1 Intermodulation immunity (analogue
speech)
4.1.5.2 Intermodulation immunity (bit stream)
4.1.5.3 Intermodulation immunity (messages)
4.1.6 Blocking immunity or desensitization
4.1.6.1 Blocking immunity or desensitization for
analogue speech
4.1.6.2 Blocking immunity or desensitization for
bit streams
4.1.6.3 Blocking immunity or desensitization for
messages
4.1.7 Conducted spurious emissions
4.1.8 Amplitude characteristic for analogue speech
4.1.9 Audio frequency response for analogue speech
4.1.10 Harmonic distortion for analogue speech
4.1.11 Hum and noise for analogue speech
4.1.12 Multi-path sensitivity
4.1.13 Bit error ratio
4.1.14 Opening delay for data
4.2 Radiated
4.2.1 Sensitivity tests (30 MHz to 1 000 MHz)
4.2.1.1 Anechoic Chamber
4.2.1.2 Anechoic Chamber with a ground plane
4.2.1.3 Open Area Test Site
4.2.1.4 Striplines
4.2.1.5 Test Fixture
4.2.1.6 Salty Man/Salty lite
4.2.2 Co-channel rejection
4.2.2.1 Test fixture
4.2.3 Adjacent channel selectivity
4.2.3.1 Test fixture
4.2.4 Intermodulation immunity
4.2.4.1 Test fixture
4.2.5 Blocking immunity or degradation
4.2.5.1 Test fixture
4.2.6 Spurious response immunity to radiated fields
4.2.6.1 Anechoic chamber
Annex A: Uncertainty contributions
Annex B: Maximum accumulated measurement uncertainty
Annex C: Interpretation of the measurement results
Annex D: Theoretical support for the evaluation of
measurement uncertainties, including mathematical
tools and properties of distributions
D.1 Probability densities and some of their properties
D.1.1 Introduction
D.1.2 Definitions
D.1.3 Means and standard deviations of usual
distributions
D.2 Uncertainties and probability densities
D.2.1 Examples of very simple systems and
corresponding naïve (direct) analysis
D.2.2 Modelling instruments
D.2.3 Comparison with worst case methods
D.2.4 Independent or not ...that is the question!
D.3 Combination of distributions
D.3.1 Addition of a constant to a random variable
D 3.2 Multiplication of a random variable by a
constant factor
D.3.3 Sums (additions) of random variables
D.3.4 Linear combinations of random variables
D.3.5 Subtraction of random variables
D.3.6 Multiplication of random variables
D.3.7 Inversions and divisions
D.3.8 Using Logs and dBs
D.3.9 Combination using deterministic functions of
one variable
D.3.10 Further theoretical material and reciprocals
D.3.11 Combinations using deterministic functions
of two variables
D.3.12 Combination of distributions - Summary table
D.4 Influence quantities
D.4.1 Theoretical approach
D.4.2 Examples
D.5 Global approaches
D.5.1 Using directly the random variables in a
measurement
D.5.2 Using random variables together with
differentiation in a measurement
D.5.3 Examples of application to particular cases
D.5.4 Empirical approach to find a model of the
system
D.5.5 Splitting into sub-systems
D.5.6 Presentation and interpretation of results
obtained (outputs)
D.5.7 Summary
D.6 Conclusions
Annex E: Mathematical transforms
E.1 Principles of derivation of formulas when
transforming from log to linear
E.1.1 A rectangular distribution in logarithmic
terms converted to linear terms
E.1.2 A triangular distribution in logarithmic
terms converted to linear terms
E.1.3 A rectangular distribution in linear terms
converted to logarithmic terms
E.2 Conversion factors
Annex F: Influence quantity dependency functions
Annex G: Mismatch uncertainties
G.1 Introduction
G.1.1 Cascading networks
G.1.2 Mismatch uncertainty calculations
G.2 General approach
G.3 Networks comprising power combiners/splitters
Annex H: Bibliography
History
Gives a method to be applied to all the applicable standards and (E)TRs, and supports TR 100 027 [11].
Published | |
Document Type | Standard |
Status | Current |
Publisher | European Telecommunications Standards Institute |
Pages | |
ISBN | |
Committee | ERM RP02 |