World Broadcasting Unions Digital Radio User Manual - page 61
DIGITAL RADIO GUIDE
TERRESTRIAL TRANSMISSION SYSTEMS - ISSUES
61
Figure 4.20: Estimation of the channel usage in Band III for T-DAB
(RPC4: suitable for mobile reception; RPC5: suitable for portable indoor reception)
0
100
200
300
400
500
600
5A
5B
5C
5D
6A
6B
6C
6D
7A
7B
7C
7D
8A
8B
8C
8D
9A
9B
9C
9D
10A
10B
10C
10D
11A
11B
11C
11D
12A
12B
12C
12D
Frequency Blocks
Number of Entries
RPC4
RPC5
Figure 4.20 shows that T-DAB mobile reception (RPC4) represents the major proportion
of the T-DAB requirements and that channels 11 and 12 are the most used for T-DAB.
The GE06 Agreement offers a great deal of flexibility for using a digital entry in the plan
for another application provided that the peak power density in any 4 kHz is respected.
Such flexibility can allow, for example, for using a DVB-T entry by 4 x T-DAB entries or by
4 x T-DMB entries and also can allow for accommodating future developments of digital
technology.
The end of the transition period for Band III has been fixed to 2015 (for some non-
European countries is 2020, see details in Figure 4.21). During that period analogue
television has to be protected. Around 25% of the T-DAB entries in the new plan have to
be coordinated with analogue television in neighbouring countries before implementation.
As a consequence, certain constraints (time constraints, power reduction, particular
antenna patterns, etc.) might be imposed to those T-DAB requirements during the
transition period. In addition, around 7% will have to coordinate with other digital
requirements and around 2.5% with other primary services (e.g., PMR - Private Mobile
Radio).