THE SOFTWARE-DEFINED RADIO IS NOW AREALITY

[摘要] The role of firmware and digital signal processing in radio transceiver design has increased to meet the global coverage requirement and to cover extra features in the mobile telephony. The Software-Defined Radio (SDR) is the practical approach for this. The paper reviews the SDR concepts, the benefits, the design steps involved in SDR, some emerging concepts, technological solutions and challenges, applications and economy.

[关键词] Software-Defined Radio;Smart antenna;RF;Cognitive radio.