DSP Structure Optimizations - A Multirate Signal Flow Graph Approach. - Ronggang Qi; Zifeng Li; Qing Ma (ISNN (2), 2004)

Deriving structures of FFT based filter banks by signal flow graphs. - Xiumei Li; Xianpeng Wang 001; Ronggang Qi; Guoan Bi (Digit. Signal Process., 2021)