What modulation methods are possible with DOCSIS? Cable Users FAQ

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What modulation methods are possible with DOCSIS?
Who sets the DOCSIS standards?
What are the differences between DOCSIS 1.0 and 1.1?
Which modems are Certified by CableLabs?
What are the DOCSIS version specifications?

What modulation methods are possible with DOCSIS?

On the downstream side either 64QAM or 256QAM is possible, with 256QAM being the usual case. Both occupy 6MHz of spectrum.

On the upstream either QPSK or 16QAM may be employed with 200Khz, 400KHz, 800KHz, 1.6MHz, or 3.2MHz of spectrum being used.

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by wheelert$93 edited by big greg
last modified: 2005-07-31 11:52:31

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What modulation methods are possible with DOCSIS?