A Channel State Information-Based Key Generation Scheme for Internet of Things

Figure 8

BER performance for perfect channel estimation ( = 0,  = 50 m,  = 49 m,  = 1 m, and (no. of transmissions) = 20). (a) The effect of for RSS-only scenario. (b) The effect of for -only scenario. (c) The combined effect of and (SNR = 32 dBm). (d) The comparison of effect of and on the BER for RSS-only, -only, and combined scenarios (key length = 140 bits).

(a)

(b)

(c)

(d)