Table 5 Comparison of signal fingerprinting approaches based on RSSI, RSRP, CSI vectors, and RSRP/CSI descriptors (1 cell, 50 RBs)
From: CSI-based fingerprinting for indoor localization using LTE Signals
Fingerprint | MDE | CDF 50% | CDF 75% | RCA | Descriptors |
|---|---|---|---|---|---|
[m] | [m] | [m] | [%] | ||
RSSI | 4.12 | 4.17 | 5.35 | 28 | – |
RSRP | 3.22 | 2.14 | 4.50 | 55 | – |
CSI | 3.10 | 2.28 | 3.90 | 61 | – |
2 descriptors | 2.48 | 1.89 | 3.36 | 69 | CSI mean |
CSI 2nd spectral central mom. | |||||
3 descriptors | 2.24 | 1.89 | 3.18 | 56 | CSI mean |
CSI spectral entropy | |||||
CSI spectral spread | |||||
4 descriptors | 2.11 | 1.82 | 2.93 | 65 | CSI mean |
CSI spectral lambda | |||||
CSI spectral kurtosis | |||||
CSI spectral flatness |