Wireless communication is widely used in home, commercial, industrial, military and space applications. Despite the development of various types of standard wireless communication links, some industrial and defense applications require dedicated links. In such cases, based on the operational demands, a new transceiver is designed. Among the various design options, reconfigurable software defined radio-based wireless links have attracted the attention of various industries. The reason for this interest is easier integration in embedded systems and less time and cost to develop a dedicated link. The purpose of this research was to design and implement a dedicated and reconfigurable wireless link based on software radio technology for use in the country's avionics industries. For this purpose and with the approach of using commercially available equipment (COTS), Zedboard Zynq board has been used as baseband processor and Fmcomms 3 board as RF interface for transmitter and receiver. In the transmitter and receiver design process, challenges such as carrier frequency offset compensation, symbol synchronization and frame synchronization were investigated and methods to solve the challenges were investigated. Three different approaches were followed to realize the reconfigurable link. In the first approach, the transmitter and receiver were implemented using the Linux-Zynq-Matlab platform. In the second approach, in order to increase the capability of the link to work in embedded systems, the transmitter was implemented without an operating system and also the baseband processing was improved. In the third design, the transmitter and receiver were both implemented without an operating system, and again improvements were made in baseband processing. Finally, for a sample link implemented, EVM was used to eva‎luate the link's efficiency. The value of EVM was measured in different attenuations and it was found that the data was transmitted from the transmitter to the receiver with an acceptable error rate. The results of this research can be used to develop dedicated wireless links using commercial software radio equipment.

شهاب الدين رحمانيان , وحيد غفاري نيا

محمدحسين باطني

احسان يزديان , احسان اديب