In　this　paper,　we　design　and　present　a　novel　ring　buffer　transmission　system　based　on　DM6446　and　FPGA.　It　can　improve　the　performance　of　real-time　sending　data　from　FPGA　to　DM6446.　The　ring　buffer　not　only　optimizes　the　efficiency　and　accuracy　of　transmission,　but　also　verifies　the　correctness　and　reliability　of　the　data　compared　with　traditional　ways.　The　proposed　system　realizes　the　radio　signal　transmission　and　analysis　function.