Research And Verification Of The Key Technology Of An UItra-Portable Software Radio Platform

Communication system presents diversified and complicated characteristics under the trend of rapid development of wireless communication.Traditional hardware radio equipment can not meet the needs of communication between different communication systems because of its single function and poor reconfigurability.On the contrary,software radio technology using the reconstruction of software programming achieves different communication functions that it gets rid of the hardware constraints with openness and scalability and so on.With the miniaturization and highly intensive of the software radio development trend,the paper designs and realizes an ultra-portable software radio platform with the smallest and reconfigurable structure.The platform combines the Xilinx-Zynq-7020 programmable system-on-a-chip with the AD9361 integrated RF agile transceiver,compatible with GNU Radio.The main work is as follows:First of all,the paper studies the definition and architecture of software radio,analyzes its signal sampling theory and digital signal processing technology.In this paper,the function analysis of the digital signal processing module,the RF circuit and the control transmission module is carried out,and the performance analysis of the RF circuit and the power module is made.Secondly,the paper complete the circuit structure and modular design according to the platform circuit function and performance requirements.We select Xilinx ZYNQ chip as Baseband digital signal processing module key chip while AD9361 agile transceiver as RF circuit core chip.Lastly,according to the design scheme of the platform circuit,the paper completes the detailed circuit realization of each module.In this paper,the inter-chip control,signal flow and the connection between the modules are analyzed in detail,and the constraint design of PCB layout and routing is fully considered.The ultra-portable software radio platform designed and implemented in this paper is small in size,high in integration and reconfigurable,and can be widely used in wireless communication system verification and university communication teaching and scientific research experiment.And it is of great significance to the development of software radio.