Software Defined Radio for RFID Application

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Radio Frequency Identification (RFID) is currently the hottest technology in wireless applications area. Its unique advantages such as data transmission with extreme low power or even without power in tag can be the biggest beneficial for goods management. Software-Defined Radio (SDR) is a wireless communications system where all of the signal processing is implemented in software. By simply downloading a new program, a software radio is able to interoperate with different wireless protocols, incorporate new services, and upgrade to new standards. In this paper, we build an RFID application simulation environment over the SDR. We do the source to sink transmission simulation by using Quadrature Amplitude Modulation, Then, we compare the differences of BER versus SNR performances for input and output signals.

Whether we realize it or not, radio frequency identification (RFID) is an integral part of our life. RFID increases productivity and convenience. RFID is used for hundreds, if not thousands, of applications such as preventing theft of automobiles and merchandise; collecting tolls without stopping; managing traffic; gaining entrance to buildings; automating parking; controlling access of vehicles to gated communities, corporate campuses and airports; dispensing goods; providing ski lift access; tracking library books; buying hamburgers; and the growing opportunity to track a wealth of assets in supply chain management. RFID technology is also being pressed into service for use in U.S. Homeland Security with applications such as securing border crossings and intermodal container shipments while expediting low-risk activities.

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