flat-rate reduction

In the method,sample the signal which has been through the anti-aliasing filter using bandpass sampling technique firstly,then correct the phase nonlinearity using FRR filter and resume the original signal.

采用对滤波后的信号进行带通采样,然后再用FRR滤波器校正相位的非线性,从而不失真地还原原信号,最后在Matlab中进行仿真,验证了该方法的有效性。