for QPSK-modulated signals, when the spectral overlap between SOI and the interference accounts for 45% of the total SOI bandwidth, CMA-DD FRESH filter can improve SNR by 0.6dB.

• 而对于QPSK调制信号，在SOI和干扰的频谱重叠部分为SOI总带宽的45%25时，CMA-DD FRESH滤波器有大约0.；6dB的信噪比改善量。