A, 25, 145 glossary, 383 glossary, 383 length versus processing gain, 153 CSMA/CD, 23 multi-channel CDMA, 353 glossary, 383 orthogonality, 82, 353 timing, 24 Ciphers Customer mapping, 334 block, 225 Customer premises equipment, 331 cipher block chaining, 227 installation, 332 counter mode operation, 226 Cyclic redundancy check electronic code book, 226 glossary, 384 offset code book, 227 WEP message integrity, 210, 213 Rijndael, 225 stream, 225 Code division multiple access, 94 Data encryption standard, 226 Coding rate Data link layer 802.11a PHY, 151-52 described, 10 802.11g PHY, 154 e-mail example, 11 802.11n mechanisms, 166 technologies, 20 defined, 151 ISDN, 30 Coexistence Data rate alternating wireless medium access, 249 802.11/a/b/g comparison, 157 Bluetooth and 802.11, 247 effective, 156, 165 deterministic frequency nulling, 249 headline versus effective, 156 wireless LAN attribute, 178 versus operating range, 2 wireless PAN attribute, 298 Data transfer Cognitive radio, 355 asynchronous, 32 resources, 370 see also Asynchronous Communication services isochronous, 32 connection oriented, 21, 314, 383 see also Isochronous connectionless, 21 Complementary code keying, 82 defined, 106 802.11b PHY, 152-53 glossary, 384 glossary, 383 DCF see Distributed Connection oriented, 21, 383 coordination function 802.16 MAC, 314 Deauthentication Contention period, 25 MAC station service, 148 Contention free period, 147 Default gateway, 14 Index Delay spread Dual carrier modulation, 104, 123 glossary, 384 Dual mode mobile WiMAX, 316 VoIP handsets, 202 multipath, 114 Dynamic rate shifting voice services, 201 802.11b PHY, 152 Denial of service, 206 Dynamic frequency selection Detector sensitivity 802.11h, 160-62 infra-red, 132 ad-hoc mode, 162 wavelength dependence, 133 glossary, 385 Deterministic frequency nulling, 249 DFS see Dynamic frequency selection Differential phase shift keying, 100 EAP see Extensible authentication 802.11b DPSK, 152 protocol glossary, 384 ECMA 340, 287 DIFS see Distributed inter-frame spacing field 