Comment Re:802.11a is 54Mbs (Score 2, Informative) 137
Right you are.
And it has been proven by Wifi companies like Atheros that OFDM is more robust that DSSS techniques.
It doesn't matter if you can put 1Gbps into the air channel if your packet error rate suffers so much that you have an effective rate of 10bps.
This is where 802.11a shines with its forward error schemes, interleaving, OFDM instead of DSSS Barker sequences like 802.11b.
OFDM will also allow the use of more channels so 802.11a SPEC could be updated later to more than the 48 channels for data comunication.
They could update it to have 96 true channels and make it work at ~110Mbs or higher with schemes like 256-QAM instead of 64-QAM. That would be a byte encoded symbol per channel! It would then be easy to have 144Mbs with little work on the spec!
And it has been proven by Wifi companies like Atheros that OFDM is more robust that DSSS techniques.
It doesn't matter if you can put 1Gbps into the air channel if your packet error rate suffers so much that you have an effective rate of 10bps.
This is where 802.11a shines with its forward error schemes, interleaving, OFDM instead of DSSS Barker sequences like 802.11b.
OFDM will also allow the use of more channels so 802.11a SPEC could be updated later to more than the 48 channels for data comunication.
They could update it to have 96 true channels and make it work at ~110Mbs or higher with schemes like 256-QAM instead of 64-QAM. That would be a byte encoded symbol per channel! It would then be easy to have 144Mbs with little work on the spec!
