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If youve been searching for a way to get up to speed on IEEE 802.11n and 802.11ac WLAN standards without having to wade through the entire specification- then look no further. This comprehensive overview describes the underlying principles- implementation details and key enhancing features of 802.11n and 802.11ac. For many of these features the authors outline the motivation and history behind their adoption into the standard. A detailed discussion of key throughput- robustness- and reliability enhancing features (such as MIMO- multi-user MIMO- 40/80/160 MHz channels- transmit beamforming and packet aggregation) is given- plus clear summaries of issues surrounding legacy interoperability and coexistence. Now updated and significantly revised- this 2nd edition contains new material on 802.11ac throughput- including revised chapters on MAC and interoperability- plus new chapters on 802.11ac PHY and multi-user MIMO. An ideal reference for designers of WLAN equipment- network managers- and researchers in the field of wireless communications....