Trellis SISO trellis_siso_f from gnuradio import trellis trellis.siso_f(trellis.fsm($fsm_args), $block_size, $init_state, $final_state, $a_post_in, $a_post_out, $siso_type) FSM Args fsm_args raw Block Size block_size int Initial State init_state -1 int Final State final_state -1 int A-posteriori In a_post_in enum Yes True No False A-posteriori Out a_post_out enum Yes True No False SISO Type siso_type enum Min Sum trellis.TRELLIS_MIN_SUM Sum Product trellis.TRELLIS_SUM_PRODUCT in float out float BCJR Algorithm. \ The fsm arguments are passed directly to the trellis.fsm() constructor.