April 2009
Intermediate to advanced
765 pages
19h 26m
English
IN THIS CHAPTER, YOU WILL LEARN ABOUT THE FOLLOWING:
802.11n history
802.11n draft amendment
Wi-Fi Alliance certification
MIMO
Radio chains
Spatial multiplexing (SM)
MIMO diversity
Transmit beamforming (TxBF)
HT channels
20 MHz non-HT and HT channels
40 MHz channels
Guard interval (GI)
Modulation and coding scheme (MCS)
HT PHY
Non-HT legacy
HT Mixed
HT Greenfield
HT MAC
A-MSDU
A-MPDU
MTBA
RIFS
HT power management
HT operation
20/40 channel operation
HT protection modes (0–3)
Dual-CTS protection
Phased coexistence operation (PCO)

802.11n requires a whole new approach to the Physical layer, using a technology called MIMO that requires ...