88 Geometry based stochastic channel modeling pectrum Shaping Filte Spectrum Shaping Filt Figure 4.7 Filter method of channel waveform generation. 88 Geometry based stochastic channel modeling m m f 0 f m m f 0 f WGN 2 N(0, ) V WGN 2 N(0, ) V + Complex Random Process Spectrum Shaping Filter Spectrum Shaping Filter Figure 4.7 Filter method of channel waveform generation.