(Cisco Wireless - wireless-ccna-14/data/1156841 The role of direct-sequence spread spectrum The role of direct-sequence spread spectrum in transmission under the influence of narrowband noise. The general procedure of signal processing is also introduced. Cisco Wireless Technologies - wireless-ccna-15/data/1156842 Methods of Direct Sequence Spread Spectrum 802.11 Direct Sequence Spread Spectrum uses Barker codes to terminate the spread spectrum gain. The rate units used during each period of signal processing are also introduced. Cisco Wireless Technologies - wireless-ccna-16/data/1156843 RF Modulation Process for Direct Sequence Spread Spectrum 802.11 Direct Sequence Spread Spectrum uses DBPSK and DQPSK as the RF modulation methods. Cisco Wireless Technologies-wireless-ccna-17/data/1156844 Rate Calculation for Direct Sequence Spread Spectrum Physical Layer Analysis and Rate Calculation for 802.11 Direct Sequence Spread Spectrum. Cisco Wireless Technology-wireless-ccna-18/data/1156845802.11 New Physical Layer Standard 802.11 New Physical Layer Standard includes HR/DSSS-802.11b, OFDM-802.11a, ERP-802.11g. Cisco Wireless Technology-wireless-ccna-19/data/1156846CCK's codebook using CCK in 802.11b, CCK's modulation method, and CCK's rate improvement. Cisco wireless technology-wireless-ccna-20/data/1156847OFDM in 802.11a using OSDM technology principle, OFDM sub-carrier spread spectrum method.)
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