Jaron CollisCore ConceptAn emerging technology aiming to emulate analog radio circuitry using software running on a conventional generic CPU.motivationhistorybenefitschallengesmotivationTo replace single-purpose transmitter and receiver electronics with software running on a CPU chip. Echoes 70s movement of PC industry from specialised to general purpose machines.historyOrigins in the US army SPEAKeasy project, intended to develop a field radio compatible with all military radio standards. benefitsHardware (radio circuitry) is frozen on manufacture, and can quickly become obselete. Configurable devices can be tweaked up until the last minute.base-stationshandsetsbase-stationsNew radio protocols and standards can be deployed by carriers using their existing hardware by reconfiguring it.handsetsHandsets can evolve as new standards are introduced (e.g. Bluetooth, GPS, UMTS)challengesEmulation requires more powerful mobile CPUs = more power consumption. Risk of interference from improperly (or maliciously) configured devices. falsemobilecomputing12002-11-19T21:31:59.459Z2003-01-04T22:18:49.199ZGNU Radio Projecthttp://www.gnu.org/software/gnuradio/gnuradio.htmlSDR Forumhttp://www.sdrforum.org/