sfx2000
Part of the Furniture
Broadcom, Atheros, Marvell have been slowly turning on some of the 'optional' features in 802.11n for some time (pre-11ac actually), and for the most part, it has been good - examples include, as you mention, LDPC and STBC's, which are a win... the real challenge with BF in 2.4GHz is either you get it, or you get spatial streams, 11n won't let you have both (11ac does, BTW).
Goes without saying that most, if not all chipsets, are dual-band, as a result, that's how we're seeing these 5GHz features propagate down into the 2.4GHz band - do some wireless PCAP's on recent 11ac routers, and one will find VHT attributes for example (Marvell does this in "auto mode", but set it to b/g/n and they go back to being compliant with 802.11n).
I suppose one upside however, is that the newer chipsets, if setup correctly, provide a cleaner 802.11n, removing some of the 'cruft' and keeping the good stuff...
Goes without saying that most, if not all chipsets, are dual-band, as a result, that's how we're seeing these 5GHz features propagate down into the 2.4GHz band - do some wireless PCAP's on recent 11ac routers, and one will find VHT attributes for example (Marvell does this in "auto mode", but set it to b/g/n and they go back to being compliant with 802.11n).
I suppose one upside however, is that the newer chipsets, if setup correctly, provide a cleaner 802.11n, removing some of the 'cruft' and keeping the good stuff...
