Real-time Playback System For Multi-channel Baseband Signals

This paper designs a real-time playback system for multi-channel baseband signals.The system has the advantages of high bandwidth,multi-channel,real-time playback and storage.It can be used in baseband signal application scenarios with high communication protocol rate,high system integration and high data sampling accuracy.It helps to reduce the difficulty and cost of developing baseband signal processing algorithms,and provide research tools for satellite remote sensing,radar detection and network communication.Firstly,this paper describes the design technology of eMMC(Embedded Multi Media Card)storage,FPGA high-speed data transceiver and bus interconnection.Secondly,this paper completes the hardware circuit design of multi-chainel baseband signal real-time playback system from the aspects of power supply,clock reset and storage configuration.Thirdly,based on the Intel FPGA system level integration tool,Qsys,this paper designs signal playback and storage,eMMC interface and protocol conversion modules,solves the problems of data transmission and interface bus protocol inconsistency,and realizes the functions of multi-channel high-speed baseband signal switching playback,eMMC storage and loading of baseband signals.Finally,the function verification and performance test of the system are carried out.The test and verification results show that the system can support real-time playback of baseband signals of four channels.The maximum playback rate of a single channel can reach 2.31GB/s,and support the signal storage rate of 40MB/s and the signal loading rate of 227MB/s.The system achieves the design goal.