Aldermaston Atomic Weapons Authority, 3G Handset and Network Design, 8, 134, 179, 182, 264 Algorithmic innovation, 20, 48-9, 81, 83, 3GPP specifications, 183, 208, 310 101, 143, 171, 187, 194, 217, 222, 224, 700 MHz auctions, 4 AM radio, 280 Abel Prize, 225 Amazon, 137-8 Abelian groups, 225 AMD processors, 179 Accelerometers, 132, 136, 143, 172, 212, Amortisation time scales, 242 218, 374 Amplifier technologies, 28 Access options, 383 Amplitude modulation (AM), 111 ACES L band satellite, 324 Analogue AM systems, 280 ACK/NACK responses, 67 Analogue cellular phones, 116 Acorn Computer, 179 Analogue Devices, 132 Acoustic waveform synthesis, 226 Analogue Devices (low-g iMEMS), 206 Active device performance, 44 Analogue Dialogue article, 132 Adaptive system examples, 35, 111, 149, Analogue and digital multiplexing, 280 158, 182, 186, 215, 370-372 Analogue functions, 45, 62, 69, 149 ADC, 189 Analogue TV, 286 Making Telecoms Work: From Technical Innovation to Commercial Success, First Edition. Geoff Varrall. © 2012 John Wiley & Sons, Ltd. Published 2012 by John Wiley & Sons, Ltd. Index Ancillary Terrestrial Component (ATC) Average margin per device (AMPD), 93 satellite networks, 321 Average margin per user (AMPU), 93 Android, 179, 200, 361 Average revenues per user (ARPU), 93 Angstrom, Anders Jonas, 214 AWS band, 109 Angstrom, Knut, 214 AXE digital switch, 238 Antennas, 43, 113-14, 119, 121, 144, 149-54, 156, 159-60, 162, 212, 258, 281, B frames, 190 315, 323, 326 Babbage Difference Engine, 238, 388 Antialiasing filters, 189 Babinet, Jacques, 24 APCO (Association of Public Babylonians, 57 Communication Officers), 127, 304, Background noise cancellation, 222-3 309-10 Backhaul economics, 257, 259, 262 APCO 25/Project 25, 306 Bahrain Telephone company, 130 Apple, 12, 20, 131, 135, 171, 180, 184, Baird 240 line system, 167 199-200, 295, 365-6 Balanced bandwidth, 338, 373, 378 Application bandwidth, 180, 184 Band allocation, 71, 106-7, 113, 149, 152-3, Archimedes, 2, 57 155-6, 160, 169, 172, 175, 212, 329 Arkessa, 348 Bandwi