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Originally Posted by Buffalo2102
1. First and most obvious is to change some or all of the current 64QAM carriers to 256QAM. That would give an immediate 30% increase in capacity.
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Can the lasers that are powering these networks handle such a move?
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2. Just because the network is rated to 550MHz doesn't mean you can't exceed that. I have seen QAMs up to 635MHz being used successfully on a 600MHz network.
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Appreciate that some kit is underspecified and I've seen carriers just over 550 also but not a lot above.
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Short-term, I doubt that it will be any one particular thing but a combination of 1 and 2.
Long-term, it will depend on the strategic view. Since set-tops naturally have to be replaced anyway, 3 and 4 may well come into play at some point, but not now.
Depending on timing, SDV may be an option but I think it's probably the least likely, given the expense and complexity of doing it.
Upgrading the networks would be very expensive but it would at least standardise things - may be done but over a long period?
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Given the Cisco edge QAMs are SDV compatible would it be so expensive to just add some more? From that the only other expense I can think of would be the STB software.
I would hope there will be no more huge network upgrades from the not too distant future on the HFC side apart from deep fibre, node + 1, and then RFoG / DPON.