Software-defined radio

“A software-defined radio (SDR) system is a radio communication system which can tune to any frequency band and receive any modulation across a large frequency spectrum by means of a programmable hardware which is controlled by software.”

from SDR Forum, “SDR Market Study: The Cognitive Radio Market"

SDR is a powerful and cost worthy solution if:

  • standards are quickly changing or are uncertain
  • spectrum use is demanding and needs to be flexible
  • software needs to run on multiple hardware platforms
  • a hardware platform needs to run on various software
  • software modules need to be changed over the air
  • cost, complexity, weight and power must all be reduced.