基于多相滤波的多信道接收机的实现

Polyphase filtering has proved to be a great advantage in channelization because it can reduce the sampling rate and reduce the filter coefficients to increase the computational speed. Therefore, in order to realize multi-channel receiver more efficiently, Phase filter design. The structure of polyphase filter FFT channelizer is introduced and the advantage of this scheme compared with the traditional low-pass filter bank is proved through comparison of algorithm complexity. Winograd algorithm is introduced for non-radix-2 FFT implementation. For the common non-integer multiple sampling rate conversion problem in the receiver, a multi-phase filtering based switching structure is proposed to improve the system efficiency. Finally, through the overall simulation, the correctness of the scheme is verified.