gnals, 6 Ground start, 166 Initialisation and Search Improved SAGE (ISIS) algorithm, 343 Inmarsat, 7 Group of block (GOB) layer, 518-19 Input impedance, of low loss transmission lines, 63 Institute of Electrical and Electronic Engineers (IEEE) 802.16, H.261 video encoder, 517-21 6, 384 H.261 video multiplex, 518-19 Inter-Access Point Protocol (IAPP), 387 Index Inter-cell interference, 275 JTRS (Joint Tactical Radio System), 121, 127 Interexchange Carriers (IECs), 160 JTT (Joint Tactical Terminal), 119 Interface definition language (IDL), 102 Interferometric method, 453, 455 Interframe mode, 502, 503 Karhunen-Lodve transform (KLT), 512 Kirchhoff models, 315, 330 Interlaced VS. progressive displays, 464-5 International code designator (ICD), 167 International Consultative Committee for Radio (CCIR), 509 LANs to PANs operation, 404 International Telecommunications Union (ITU), 509 802.15.3 task group, 406-7 Internet and IP technology, 268 Bluetooth, 404-6 Internet access, 8 UWB PANs, 407-11 Internet Protocol (IP), 10, 154 Last SR timestamp (LSR), 238 Internet Protocol (IP)-based real-time communication, see Lattice codes, 209-10 Real-time communication Layering and routing, 159 Internet protocol voice and video telephony and teleconfer- LDCELP (Low Delay CELP), 17 encing, see Real-time communication LDPC codes, 208-9 Interworking functions (IWFs), 173 Leprechaun, see AN/PRC-6725 Intra-cell interference, 275 Levels of abstraction, 158 Intraframe mode, 502, 503 LifeCycle class, 103-4 Inverse DCT (IDCT), 512 Light emitting diode (LED), 447 Inverse discrete Fourier transform (IDFT), 283, 423, 424 Light propagation, in optical fiber, Inverse fast Fourier transform (IFFT) processing: multimode fiber, 446-7 and OFDM implementation, 282-4 optical coupling, 447-8 INVITE method, 234 rays and electromagnetic mode theory, 443 Ionising and non-ionising radiations, 144 single-mode fiber, 443-6 IP header, 193 Linde-Buzo-Gray (LBG), 514 IP network protocols, to support voice, 193 Line characteristic impedances, of transmission line