Table 3 Performance evaluation of target detection with measurements related to a single and double target moving along the main LOS path (i.e., only the receiver RX2); both space- and frequency-domain correlation methods with a single threshold are employed
Method using single threshold | Sensitivity | Specificity | Accuracy | FPR |
|---|---|---|---|---|
Frequency-domain CSI correlation \(\mathbf {r_{\mathrm {\mathit {t,\ell _{j}}}}}\phantom {\dot {i}\!}\)) | 0.97 | 0.49 | 0.9 | 0.5 |
Space-domain CSI correlation \(\phantom {\dot {i}\!}\mathbf {r_{\mathrm {\mathit {t,f_{k}}}}}\)) | 0.98 | 0.46 | 0.92 | 0.53 |