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Electronic Communications Act, 2005 (Act No. 36 of 2005)

ICASA

Final Radio Frequency Spectrum Assignment Plan for the Frequency Band 470 to 694 MHz

5. Transmit Configuration for DVB-T2

 

6.1 The DTT Frequency Plan in Annexure J of the Terrestrial Broadcasting Plan 2013, is designed with the Transmit Configuration for DVB-T2 (Fixed Reception). The Terrestrial DTT Frequency Plan which was developed for South Africa is based on the following transmit configuration:

 

Technology:

DVB-T2

Constellation:

256 QAM

FEC/Code Rate:

3/5

Guard Interval

1/8

Location Probability:

95%

FFT size

32Ke

Block length

64800

Effective minimum usable field strength (CH21):

49.873 dBuV/m

Capacity

30.01Mb/s

Pilot Pattern

PP2

 

6.2 The transmit configuration is the most optimum transition configuration preferred. However, if the guard interval is smaller than the specified GI, this will lead to self-interference in the network. The Authority therefore emphasise that the transmission parameters should comply to the specified transmission configuration above even though 3 Mbit/s may be compromised.

 

6.3 The following transmit configuration or similar is possible, however, caution should apply as self-interference may result on the network thus making the SFN(s) unimplementable. See below transmit configuration:

 

Constellation:

256 QAM

FEC/Code Rate:

3/5

Guard Interval

1/16

Location Probability:

95%

FFT size

32Ke

Block length

64800

Effective minimum usable field strength (CH21):

49.375 dBuV/m

Capacity

33.27 Mb/s

Pilot Pattern

PP4