Table 3 Pseudocode of the Stage II in ICASST Scheme

{

   SET the index j to 1;

   Judgement: IF Q(t) > Q_th THEN

Estimate t_sp2 with the algorithm stated in Section 5.3;

Calculate $T_2^j$ according to the algorithm stated in Section 5.2;

SU Tx sends $T_2^j$ to SU Rx;

Calculate the transmission power P _s with the algorithm stated in section 5.1;

SU Tx transmits data with transmission time $T_2^j$ and transmission power P _s ;

SU Rx feeds the sensing result ChannelState back to SU Rx at the end of $T_2^j$;

j = j + 1;

IF ChannelState = Idle THEN

CALL Stage I Adaptive Transmission;

ELSE

GOTO Judgment;

END IF

ELSE

   SU Tx waits T _w seconds;

GOTO Judgment;

END IF

   }