Noise floor collision detection, 290 graphical display, 185 devices, 126 WMAN survey, 325 modulation methods, 289 Noise power density, 109 origins, 287 Noise and interference survey PHY layer, 288 WLAN site survey, 184 protocol stack, 289 Nonce resources, 367 CBC-MAC, 227 usage models, 291 glossary, 390 NetStumbler, 246 key generation, 222 Network adapter Novell Netware, 35 MAC address, 22 Null tones, 123 See also Network interface car Network address translation, 18 glossary, 390 OBEX, 281 static and dynamic, 19 IrOBEX, 285 static NAT table, 18 OFDM see Orthogonal frequency division Network architecture multiplexing logical, 9 OFDMA physical, 37-67 scalable, 316 Network bridging see Bridging Offset QPSK modulation, 100, 276 Network capacity Operating mode bandwidth requirements, 180 access point configuration, 193-94 comparison for WLAN Operating procedures technologies, 181 wireless MAN, 336 voice calls, 199-200 Operating range WLAN attribute, 178 factors influencing in WLANs, 180, 182 Network ID indoor versus PHY data rate, 182 determining, 14 versus data rate, 2 Network interface card wireless PAN attribute, 298 configuration, 194 Operating system disabling, 238 considerations, 34 wireless, 45 see also Network operating system Network layer Operations described, 10 customer helpline, 339 e-mail example, 11 financial, 340 ISDN and, 30 leasing agreement, 338 technologies, 13 performance monitoring, 197-98 Network management, 196 subscriber agreement, 338 Network operating system wireless LAN, 197 configuration, 191, 195 wireless MAN, 335 considerations, 34 operating cost elements, 336 Network performance monitoring, 197 start-up phase, 337 Index Orthogonal frequency division Personal operating space, 253 multiplexing, 2, 89, 151 Phase constellation, 99 802.11a, 151 frequency hopping, 123 802.11g, 154 Gray coding, 102-3 enhanced channel bandwidths, 165 multi-band UWB radio, 122 glossary, 391 Phase shift keying, 98 pilot tones, 92 Photodiode tone orthogonality, 90 minimum threshold irradiance, 132-33 transciever 