Recommendation ITU-R BS.1615-3
Policy on Intellectual Property Right (IPR)
Annex 1 Minimum usable field strengths for digital sound broadcasting
(DSB) (Digital Radio Mondiale (DRM) system) at frequencies below 30 MHz
1 Introduction
2 Relevant transmission
parameters
2.1 DRM robustness
modes
2.2 Spectrum occupancy
types
2.3 Modulation and
protection levels
3 Computation of minimum
usable field strength
4 Further remarks
Attachment 1 to Annex 1 Procedure for estimation of the minimum usable
field strength
2 Receiver sensitivity
3 Other factors to be
considered
Attachment 2 to Annex 1 Required S/N for DRM reception
1 Introduction
2 S/N values
for LF/MF bands
3 S/N values
for HF bands
Attachment 3 to Annex 1 Prediction and modelling of radiowave
propagation for DSB at frequencies below 30 MHz
1 Introduction
2 Prediction of HF sky-wave
propagation
3 Prediction of MF ground-
and sky-wave propagation
4 Modelling of propagation
channels
Annex 2 RF protection ratios for DSB (DRM system) at frequencies below
30 MHz
1 Introduction
2 RF protection ratios
3 RF power reduction for DSB
Attachment 1 to Annex 2 Calculated RF protection ratios for DSB
(DRM system) at frequencies below 30 MHz
1 Introduction
2 Calculation parameters
2.1 Analogue signal
AM transmitter
AM modulation
AM receiver
2.2 DRM signal
Transmitter for digital signals
Receiver/demodulator for digital signals
3 RF protection ratios
Attachment 2 to Annex 2 Method of measurements and determination of RF
protection ratios
1 Method of measurements in
accordance with Recommendation ITU‑R BS.559
1.1 Calculation method
1.2 RF power
relationship AM/digital
1.3 Receiver
characteristics
1.3.1 AM
receiver selectivity curve
1.3.2 Digital
receiver: required S/I
1.4 Use of the DRM
spectrum mask
1.5 Frequency
separations
2 Determination of RF
protection ratios for DSB in the broadcasting bands below 30 MHz
2.1 Introduction
2.2 Calculation model
2.2.1 Calculation
method
2.3 Transmitter model
2.4 Receiver model
2.5 Future extension
of the calculation model
3 Assumed system parameters
3.1 Spectrum masks
3.2 AM transmitter
(Figs 5 to 8)
3.3 AM modulation
(Figs 5 to 7)
3.4 AM receiver (Figs
11a and 11b)
3.5 Transmitter for
digital signals
3.6 Digital modulation
(Figs 9a and 9b)
3.7 Receiver for
digital signals (Fig. 9a)
4 Verification of calculation
method
5 Application for digitally
modulated signals
6 Summary
Attachment 3 to Annex 2 Calculated RF protection ratios for DSB (DRM
system) using 18 and 20 kHz bandwidths at frequencies below 30 MHz
1 Background
2 Basic parameters -
Reminders
2.1 DRM bandwidths
2.2 Spectrum mask
2.3 DRM Signal
2.4 True values and
relative values of protection ratios
3 Method to derive protection
ratios for 18 and 20 kHz DRM signals
3.1 AM interfered with
by DRM
3.1.1 Mode
DRM_A2_9 kHz
3.1.2 Mode
DRM_A3_10 kHz
3.1.3 Mode
B2_9 kHz
3.1.4 Mode
B3_10 kHz
3.1.5 Mode
DRM_C3_10 kHz
3.1.6 Mode
DRM_D3_10 kHz
3.2 DRM interfered
with by DRM, identical modes
3.2.1 Mode
DRM_A2_9 kHz
3.2.2 Mode
DRM_A3_10 kHz
3.2.3 Mode
DRM_B2_9 kHz
3.2.4 Mode
DRM_B3_10 kHz
3.2.5 Mode
DRM_C3_10 kHz
3.2.6 Mode
DRM_D3_10 kHz
3.3 DRM interfered
with by AM
3.3.1 Proposed
method
3.3.2 Calculation
3.4 Digital (64-QAM,
protection level No. 1) interfered with by digital
3.4.1 Mode
DRM_B0_4.5 kHz interfered with by B4_18 kHz
3.4.2 Mode
DRM_B0_4.5 kHz interfered with by B5_20 kHz
3.4.3 Mode
DRM_B1_5 kHz interfered with by B4_18 kHz
3.4.4 Mode
DRM_B1_5 kHz interfered with by B5_20 kHz
3.4.5 Mode
DRM_B2_9 kHz interfered with by B4_18 kHz
3.4.6 Mode
DRM_B2_9 kHz interfered with by B5_20 kHz
3.4.7 Mode
DRM_B3_10 kHz interfered with by B4_18 kHz
3.4.8 Mode
DRM_B3_10 kHz interfered with by B5_20 kHz
3.4.9 Mode
DRM_B4_18 kHz interfered with by B0_4.5 kHz
3.4.10 Mode
DRM_B4_18 kHz interfered with by B1_5 kHz
3.4.11 Mode
DRM_B4_18 kHz interfered with by B2_9 kHz
3.4.12 Mode
DRM_B4_18 kHz interfered with by B3_10 kHz
3.4.13 Mode
DRM_B4_18 kHz interfered with by B5_20 kHz
3.4.14 Mode
DRM_B5_20 kHz interfered with by B0_4.5 kHz
3.4.15 Mode
DRM_B5_20 kHz interfered with by B1_5 kHz
3.4.16 Mode
DRM_B5_20 kHz interfered with by B2_9 kHz
3.4.17 Mode
DRM_B5_20 kHz interfered with by B3_10 kHz
3.4.18 Mode
DRM_B5_20 kHz interfered with by B4_18 kHz
4 Summary
4.1 AM interfered with
by DRM
4.2 DRM interfered
with by DRM, identical modes
4.3 DRM interfered
with by AM
4.4 DRM interfered
with by DRM, different modes
Annex 3 Minimum usable field strengths for digital sound broadcasting
(DSB) IBOC system at frequencies 525 kHz – 1 705 kHz
1 Introduction
2 IBOC system configurations
2.1 Operating modes
and parameters
3 Minimum usable field
strength
3.1 Noise level
related audio protection minimum usable field strength (Legacy method)
3.2 Integrated
receiver practice related minimum usable field strength
Attachment 1 to Annex 3 Procedure for estimation of the minimum usable
field strength
1 Spectrum management
considerations and control
2 Field strength
considerations
3 Background for calculating
the actual noise factor at the receiver input
3.1 Determining the
minimum usable field strength using ITU noise related data
3.2 Determining the
minimum usable field strength using receiver practice integrated method
Attachment 2 to Annex 3 Carrier to noise ratio for digital sound
broadcast (DSB) IBOC System
1 Reception level
1.1 Minimum C/N
Attachment 3 to Annex 3 Conversion of C/N0 to
SNR for IBOC signals
Annex 4 RF protection ratios for DSB (IBOC system) at frequencies
between 525 kHz and 1 705 kHz
1 Introduction
2 IBOC system spectral mask
3 RF protection levels
3.1 Calculation
methodology for interference involving analogue AM
3.2 Protection tables
Attachment 1 to Annex 4 Calculation methodology for interference
1 Calculation methodology for
interference involving analogue AM
2 IBOC Interference into
analogue and protection
2.1 Desired AM signal
interfered by IBOC hybrid
2.2 AM signal
interfered by IBOC Digital