echniques, 342, 344 'Front to back ratio', 29 High Speed Downlink Packet Access (HSDPA), 263, 305 Full-duplex circuit, 162 High-Speed Packet Access (HSPA), 305 Full function device (FFD), 432 evolution, see HSPA Evolution Future Public Land Mobile Telecommunications Systems Higher-order modulation, 276-8 (FPLMTS), 260 HiperLAN and HiperLAN, 2, 403-4 Future Radio Wideband Multiple Access System (FRAMES), 261 HIPERLAN/2, 424 HLS (hue, lightness, saturation) color space, 477 Galois fields, 204 HomeRF Working Group, 414 Gamma correction, 480 Hopping clock, 405 current systems, 481-2 Horizontal sync, 464 early NTSC systems, 481 HSI (hue, saturation, intensity) color space, 477-8, 479 HSPA evolution, 273-4 early PAL and SECAM systems, 483 non-CRT displays, 482 HSV (hue, saturation, value) color space, 477, 478 Gateway, 155 Human visual system (HVS), 503, 504 Gaussian beams, 319 Hybrid ARQ, 220, 295, 302-4 Gaussian frequency-shift keying, see Gaussian minimum-shift type-I hybrid ARQ protocols, 220 keying (GMSK) type-II hybrid ARQ protocols, 220-21 Gaussian minimum-shift keying (GMSK), 405 Hybrid ring coupler, 66 General inquiry access code (GIAC), 429 Hybrid-Space SAGE (HS-SAGE) algorithm, 344 General Packet Radio Services (GPRS), 260 HyperText Markup Language (HTML), 107 General purpose DSP, 69, 76-7, 85-6 General purpose processors (GPPs), 96 Geographic routing, 254 IEEE 802.1 p/Q, 194 Image channel interference, 38 Geolocation, 123, 129-30 Impedance relations, in transmission lines, 63-4 Geometrical optics (GO) theory, 324-5 Improperly terminated line, 54 Geo-synchronous earth orbit (GEO) satellites, 6 IMT-2000, in ITU, 263-4 Gigabit Ethernet, 199 Incident waves, 42 Glare, 164 Incremental Redundancy (IR), 303-4 Global positioning system (GPS), 123 Global system for mobile communication (GSM), 71, 74 Independent, identically distributed (iid) model, 229 Infinite fields, 206 Globalstar, 7 Infrared Data Association (IrDA), 6 GNURadio, 101, 118 Infrared link, 386 Goal-based agent, 126 Greedy filling, 298, 300 Infrared si