(Cisco Wireless Technologies-wireless-ccna-21/data/1156848BPSK/QPSK/16QAM usage in 802.11a BPSK/QPSK usage, 16QAM usage analysis. Cisco Wireless Technologies-Wireless-ccna-22 Convolutional Code Usage Analysis of 64QAM in 802.11a, Constellation Diagram. Use of Convolutional Codes and Rate Calculations. Cisco Wireless Technologies-wireless-ccna-23/data/1156848802.11g802.11g uses OFDM technology in the 2.4GHz band, while also insisting on being compatible with 802.11b. Cisco Wireless Technologies-wireless-ccna-24/data/1156867IEEE802.11 describes the various subprotocols/task groups of IEEE802.11. WIFI authentication is also analyzed. Cisco wireless technology-wireless-ccna-25/data/1156865FCC/ETSI introduces the FCC/ETSI restrictions on frequency and power, and also gives some rules of the National Radio Administration. Cisco Wireless Technologies-wireless-ccna-26/data/1156866802.11 at a glance summarizes the differences between the 802.11 physical layer standards. The DRS dynamic rate transfer technique is introduced. Analyzed the compatibility issues of 802.11g/802.11b.)
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