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. 2023 Feb 7;23(4):1881. doi: 10.3390/s23041881

Figure 4.

Figure 4

Secrecy rate versus the number of active reflecting elements at Ns=20 and PT=30 dBm. (a) Secrecy rate of the irregular RIS with M=4 and the regular RIS for reference with M=4,8. (b) Secrecy rate of the irregular RIS with M=32 and the regular RIS for reference with M=32,64.