Report ITU-R S.2546-0
Policy on Intellectual Property Right (IPR)
1 Scope
2 Introduction
3 Functional descriptions of
an earth station and earth station characteristics
3.1 Overview of an
earth station
3.2 High gain and low
noise as design objectives of an earth station
3.3 Figure of merit of
the earth station and earth station noise temperature
3.3.1 Computing
the G/T ratio for an earth station
3.3.2 Contributors
to earth station noise temperature
3.3.3 Sample
values of earth station temperature and figure of merit
3.4 Low noise
amplifier and its intended operating point
3.4.1 Basic
block diagrams
3.4.2 Linear
region as a target operating point for the LNA/LNB
3.4.3 Amplifier
desensitization and blocking
3.5 Wideband operation
as a design objective of an earth station
4 Description of the
mechanisms involved in interference into the FSS earth station
4.1 Co-frequency
scenario: IMT and FSS sharing the same frequency band 3.4‑3.6 GHz
4.2 Adjacent band
scenario example: IMT operating in 3.4-3.5 GHz and FSS in 3.5‑3.6 GHz
with a standard LNB response starting at 3.4 GHz
4.2.1 Impact
of IMT emissions in the frequency band 3.4-3.5 GHz falling within the FSS LNB
response
4.2.2 Unwanted
emissions falling within the operating frequency band 3 500-3 600 MHz
of the FSS
4.3 Overview of
applicable ITU-R sharing study results
4.4 Summary of impact
to FSS in absence of mitigation measures
5 Mitigation techniques
applicable to the FSS earth stations
5.1 Mitigating
techniques for co-frequency sharing
5.1.1 RF
Shielding of earth stations
5.1.2 Mitigation
of interference by adaptive signal processing
5.2 Mitigating
techniques for adjacent band sharing
5.2.1 Mitigating
received IMT in-block interference and LNB blocking
5.2.2 Reducing
the level of IMT unwanted emissions into the FSS earth stations operating band
5.3 Use of adaptive
waveform as an interference mitigation technique
6 Mitigation techniques
applicable to IMT networks
6.1 Sector pointing to
reduce emission power towards FSS earth station
6.2 Adaptive beam
forming for active antennas
6.3 Multiple input,
multiple output (MIMO) technique
6.4 Antenna
downtilting
6.5 Low/medium power
networks for local coverage
6.6 Unwanted emissions
of IMT transmitting stations
7 Mitigation measures
applicable to both the IMT and FSS earth station side
7.1 Additional
considerations in adjacent band operations: Inter-service frequency separation
7.2 Distance based
mitigation: the concept of exclusion and restriction zones
7.2.1 General
principles affecting the size and shape of the zones
7.2.2 Definition
of exclusion zone
7.2.3 Definition
of restriction zone
8 Unwanted emission limits:
determining the total power in a frequency range
8.1 Definition of a
spectrum emission mask
8.2 Examples of
spectrum emission masks
8.3 Procedure to
determine the total unwanted emission power expected within a frequency range
covered by a spectrum emission mask
8.3.1 Total
power at the input of the FSS earth station, calculation example
8.3.2 Use of
an SEM for the determination of effective rejection and as aid to the
development of an RF filter specification
9 Summary