The First DVB-T2 Single Frequency Network (SFN) in Vietnam
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2.3 Parameters of SFN STT Parameters
1 2 3 4 5 6 7 8 9
10 11
12 13 14
15
Frequency channel Bandwidth PLP mode L1
FFT
Guard interval Pilot Pattern
Transmission mode Constellation Code rate FEC
ASI Mode Bitrate
Emed (FX) C/N (FX) 3.2 Some actual measurement results Value
57, 58, 59 8Mhz
Single PLP QPSK
32k/normal 19/256 PP4
64QAM Rotated 3/4
Normal LDPC 64K
Packet 30.141.937
>56.25 dBµV/m
>17.7 dB
• Emed (dBµV/m): For rooftop antenna • C/N (dB): For rooftop antenna
3. SFN coverage planning and actual measurement results
3.1 Some calculated results of SFN coverage
Figure 8: Graph comparing FN emulation results with actual measurement results
According to RRC-06
Figure 7: Measurement sites Note
According to ETSI EN 302 755
4. Conclusion
Figure 5: DVB-T2 SFN coverage in the south of Vietnam with three transmitter sites, namely HTV HCM, Binh Duong and Quan Tre
With the outstanding features of the DVB-T2 standard, AVG’s successful implementation of digital terrestrial transmission and broadcasting infrastructure has created new opportunities for providing high definition television (HDTV) services, mobile TV services and other services in the future. In particular it has provided the remarkable contribution of implementing large-scale SFN to save national frequency resources.
Figure 6:
DVB-T2 SFN coverage in the north of Vietnam with four transmitter sites, namely HTV Hanoi, Van Ho, Keangnam and Nam Dinh
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