数字信道模拟器中随机误码插入的设计和实现

Design and Implementation of Random Error Code Insertion in Digital Channel Emulator

随机误码插入是数字信道模拟器设计中的关键技术之一。提出了数字信道模拟器中一种高精度的随机误码插入方法,该方法结合了线性同余法和中心极限定理,并采用FPGA+ARM实现了数字基带信号的随机误码插入,具有精度高、容易实现的优点。Matlab仿真结果和测试数据验证了算法的可行性。

Random error code insertion is one of the key technologies in digital channel emulator design. This paper presented a method for designing a high accuracy random error code insertion suitable for digital channel emulator. The proposed solution is based on the combined use of the linear congruence generator（LCG） and the central limit theorem. The resulting architecture provides a high accuracy random error code insertion with low complexity architecture for a digital implementation in FPGA and ARM. The performance was studied by means of MATLAB simulations and test data.