单径或多径瑞利衰落信道仿真，实现用SDRAM运行nios，同时用SRAM保存摄像头数据，本科毕设要求参见标准测试模型。- Single path or multipath Rayleigh fading channel simulation, Implemented with SDRAM run nios, while saving camera data SRAM, Undergraduate complete set requirements refer to the standard te