Slide 1: Extended Spectrum DOCSIS: A Much Different RF Spectrum Upgrade
Extended Spectrum DOCSIS® A Much Different RF Spectrum Upgrade September 2020 Teleste Proprietary. All rights reserved. Unclassified
Slide 2: Future of Coax Cable
Future of Coax Cable • There is a long lifetime for DOCSIS 4.0 FDX 3 GHz ESD 1.8 GHz ESD existing coaxial network. Ultra High Split • DOCSIS 4.0 specification is 20 G 30 defining the next steps FDX amplifier G 3 GHz + FDX • There are several ideas for the Soft FDX next 10…20 years, how to Static 6 G
Slide 3: Amplifier RF Level and TCP
Amplifier RF Level and TCP • RF Level is the signal strength at a particular frequency. • TCP (Total Composite Power) is the area under the Level vs Frequency plot. • Previous RF Spectrum upgrades were able to increase TCP to cover the additional spectrum. Today’s components are not capable of exten
Slide 4: Method – how to manage TCP
Method – how to manage TCP Back-off for >1.2 GHz OFDM signals made by RPD module RPD node Coax Hom network e RPD Lower TCP module CM CM sees a flat level until 1.2 GHz and above OFDM blocks up to 1.8 GHz with different back-offs 1.2 GHz 1.2 GHz 1.2 GHz 1.2 GHz Back-off changes possible Teleste Propr
Slide 5: RF Spectrum Upgrade to 1.8 GHz
RF Spectrum Upgrade to 1.8 GHz Previous RF Spectrum RF Spectum Upgrade to 1.8 GHz Upgrades • Additional TCP is not readily • Upgrades were accomplished available. with more TCP • Docsis 3.1 OFDM has enabled • Continue RF Level Slope towards higher and flexible modulation. higher frequencies • Reduce
Slide 6: Throughput data comparison
Throughput data comparison 1.2 GHz loading , 204/258 MHz split 1.8 GHz loading , 492/606 MHz split 54 60 50 56 s Gbp . 6 46 52 10 9 dB Level [dBmV] Level [dBmV] Gbps 9. 4 42 48 38 44 4096 1.4 4X 3.8 34 24 x OFDM 40 27 x 4096 4096 2048 1024 512 Gbps SC QAM Gbps SC OFDM OFDM OFDM OFDM OFDM QAM 30 36 0
Slide 7: RF Spectrum Conclusion
RF Spectrum Conclusion • TCP (Total Composite Power) will be limited. • Robust flexible nature of D3.1 OFDM will enable optimization of modulation. • RF input level at the home will have a direct impact MER and modulation. • A system that can maximize and stabilize the RF level at the home will enab