Table 2.

Main Outdoor experimental results.

Environment	Exp.1	Exp.2	Exp.3	Exp.4
Max Signal Strength	−31	−21	−32	−28
Min Signal Strength	−67	−43	−68	−66
Range	36	22	36	38
Signal Correlation	0.908	0.986	0.902	0.921
Key Generation rate	16.5 bit/s	26.9 bit/s	22.2 bit/s	12.8 bit/s