The document discusses moving HFC actives towards 1.8 GHz and the capacity boost that DOCSIS 4.0 and higher bandwidths will provide over coaxial cable. It also notes that 1.8 GHz amplifier designs are ready for the next frequency splits and increased bandwidths, though cable system upgrades will depend on factors like cable lengths, drop cable losses, and legacy systems.

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HFC Actives towards 1.8 GHz?
Rami Kimari
Vice President, HFC

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HFC – One minute to midnight?
...Or just on the 1st step in the coax revolution

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Capacity boost with DOCSIS 4.0
5x OFDM (192 MHz)SC-QAM channels
13.9 Gbps108 MHz85 MHz0.4 G
6 x OFDM (96 MHz)
204 MHz 258 MHz 13.0 Gbps1.4 Gbps
2.3 Gbps 12.3 Gbps
492 MHz
300 MHz
3.1 Gbps 11.5 Gbps
372 MHz
396 MHz
602 MHz4.0 Gbps 10.8 Gbps492 MHz
834 MHz5.7 Gbps 9.4 Gbps684 MHz

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Next coax upgrade – just around the corner
1G8 amplifier design rules
Feasible for current loads
Ready for next frequency splits
Automatic level regulations
Auto alignment
Power save

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Summary
2. DOCSIS 4.0 brings more capacity
1. Coax is a powerful asset
3. 1.8 GHz amplifiers are ready just around the corner
• But when do upgrades make sense?
• Cable lengths, drop cable losses, legacy systems,
in-house networks, etc.
4. In practice
• Trials can start in 2021
• 1.8 GHz amplifiers are waiting DOCSIS 4.0 devices,
not vice versa
5. In coax we trust!