Transcription of 4K・8K時代に向けたケーブルテレビの 映像配信の …
1 29 12 26 ( ) 1 RF RF RF ( ) HFC FTTH (V-ONU ) HFC Hybrid FiberCoaxialFTTH Fiber To The Home RF : Radio Frequency V-ONU: Video-Optical Network Unit2 FTTH FTTH FTTH FTTH FTTH ONU:Optical Network Unit OSU :Optical Subscriber Unit ONU OLT.
2 Optical Line Terminal OSU )3 FTTH OSU IP ) FTTH 4 10 Mbps 10 Gbps V-ONU 90 MHz 770 MHz 40 Mbps 160 Mbps HFC FTTH CATV FTTH VDSL CATV DOCSIS DOCSIS.
3 Data Over Cable Service Interface Specifications5 / ( ) / (IP) au TV TV IPTVIP TV TV ch ch Youtube AbemaTVDAZNNHK TVNetflixTVerau milplus TVAmazon TV 6 7
4 8 2017 3 au au ( 51ch) (NTT ) ( 124ch) 4K ch 20 (NTT ) ( ch) FTTH( ) 4K ( ) 4K FTTH( ) STNet (STNet ) 4K 4K IP 5 KDDI ) 2016 2 ( ) IP IP 94 (2017 3 ) ( )
5 9 149 155 149 136 136 10 ( 9 12 ) ( 13 16 ) BS 110 CS 17 19 4 5 1530nm 1625nm 8 3m 20 11 15 19 64 QAM256 QAMOFDM(256/1024/4096 QAM)OFDMQPSK 110 CS TC8 PSK BS 16 APSK 10 14 18 90 770 MHz90 9 13 17 16 APSK(7/9 ) 15dB 16 APSK(9/10 )
6 21dB BER 1 10-8 BER 1 10-4 BER 1 10-4 BER 1 10-8 7/9 CN 15dB 9/10 CN 21dB 12 15 20kHz 20kHz 12 15 49-81dB 57-81dB 49/56/60/63-81dB 47-81 dB 47-81dB 48-81dB 12 15 26dB 34dB 26 40dB 24dB 8dB 11dB 7/9 13dB 9/10 17dB : 11 ( ( )) ( ( ))
7 ( ( )) ( ( )) ( ( ))12 IP IP IP IP IP IP IP IP IP IP IP
