Algorithm 1 The computational radio frequency identification (CRFID) operation procedure.

1: while the buffer id not empty do  2: if receive Query or QueryRep command then  3:  return RN16  4: end  5: if receive the ACK containing the same RN16 then  6:   extract $N$ data frames of length $l_p$ and encode into $N+M$ ($l_p$ and $M$ are carried in the ACK)  7: end  8: repeat  9:  track the capacitance voltage and obtain $U_{\max }$ and $\tau$, and sleep for a period of $t_o$ 10:  compute the optimal number of transmission frames $n_k$ via Equation (6); then, transmit it to the reader 11: until all $N+M$ frames have been transmitted 12: end