Chapter 18. High Throughput (HT) and 802.11n

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)

High Throughput (HT) and 802.11n

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

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