... Interconnect), 316, 320Radar, 74, 75 Radio applications (layer), 377, 380–380 Radio horizon, 83 Radio infrastructure, 164, 211, 363–368, 378,380–381 Radio noise, 81, 397 Radio platform (reference model), ... Programmable Digital Radio (PDR) Case Studies 215A. A Basic Commercial PDR 215B. Multimode Conventional Radios 218C. GEC’s Programmable Digital Radio 220D. ITT Digital Radio 221E. Commercial ... for people withstrong software background but little background in radio engineering. Soft-ware radio is about wideband radio frequency (RF) hardware that is given its“personality” by software....