I would recommend reading books instead of blogs if you really want to understand this stuff. O'Reilly's "802.11n: A Survival Guide" is fairly OK. If you read

I would recommend reading books instead of blogs if you really want to understand this stuff. O'Reilly's "802.11n: A Survival Guide" is fairly OK. If you read German, I highly recommend "Wireless LANs" by author Jörg Rech.