Fast and Reliable Burst Data Transmission for Backscatter Communications

. 2019 Dec 9;19(24):5418. doi: 10.3390/s19245418

Algorithm 2 The reader operation procedure.

1: Initialize

l_{p}

= 16 bits,

M

M_{\min}

V

= 0,

R

= 0,

F

= 0
2: send the Query or QueryRep command
3: if receive the RN16 from CRFID then
4: return an ACK with the same RN16 and

l_{p}

and

M

5: end
6: if receive the frame from CRFID
7: if the frame is correct then
8:

V = V + l_{p}

;

R = R + 1

9: else

F = F + 1

10: end
11: if

R = N

F = M + 1

then
12: compute

G = V / Δ t

, where

Δ t

is the transmission time of the current round
13: if

G > G^{'} (1 + θ)

and

l_{p} < l_{p}^{\max}

then
14:

l_{p} = l_{p} + 8

15: else if

G < G^{'} (1 + θ)

and

l_{p} > l_{p}^{\min}

then
16:

l_{p} = l_{p} - 8

17: end
18: end
19: compute the number of redundant frames

M

via Equation (7) for the next round
20: end